HX3.7 Manager Current Firmware

Firmware for HX3.6/HX3.7 boards only. Do not use on HX3.5 devices! Please see the HX3.6 Migration Guide (english) resp. HX3.6 Migration Guide (deutsch).

Note: This firmware is compatible with HX3.6 boards; however, menu for external effect insert does nothing on HX3.6.

Update Parts/Files Version List

File/Part	Version in Update #7.063
Manager:	#7.23
FPGA:	#24022026
Firmware:	#7.064
DSP:	#x1.27
Defaults:	-
Presets:	-
MIDI CCs:	(ccset8.dat)
Scan Driver	#6x.53
Taperings	-
Wavesets:	-
Organ Models:	(organs.dat)
Speaker Models:	(speakers.dat)
Bootloader:	(required: #1.05)

09.07.2026 DSP Firmware x1.27

On recent Windows installations, HX3 may mount twice in device list (notably after reboot) due to a glitch in USB MIDI implementation. In this case, no communication is possible and HX3 Manager will crash when trying to connect or re-connect. If device HX3 Sound Engine appears twice in both columns in connect window, we strongly recommend to update DSP firmware to version x1.27, using the manual bootload enable method:

• Enable BootLoad mode in main menu (button down, navigate to Bootld Update menu and press encoder for two seconds). BL will appear in display corner, DFU is active now.
• Start HX3 Manager, but do not connect.
• Open BootLoad utility window. Click button Single DFU File on right side. Open dsp_fw.dfu resp. dsp_fw_noGM.dfu file in updates directory. DFU uploader will send the firmware, takes only a few seconds.
• When finished, navigate to Exit Bootld menu (turn encoder right) and press enter.
• Connect with HX3 Manager and check DSP version in Updater window.

The new DSP firmware is contained in hx3_manager_7064 package, updated on July 9th.

22.05.2026 Manager (no new firmware version)

• Manager/Panel: Bugfix, Trackbars did not work properly or did not sync

09.03.2026 Manager #7.23, Firmware #7.064, Scan Drivers #6x.53, FPGA #24022026 BETA (but likely final)

• Manager: Support for new scan drivers, Pulse 6105W, FatarScan1-61, FatarScan1-73 (future products)
• Scan Drivers: New types for Pulse 6105W and FatarScan1-61 (future products)
• Scan Drivers (all Fatar, Pulse and XB2/XB5): Improved dynamic curves for key velocity using a pre-loaded velocity curve
• FPGA: Added RAM for loadable velocity curves
• Firmware: Support for loadable velocity curves, better dynamic resolution
• Firmware: Increased MCU clock from 72 MHz to 120 MHz for better performance

Note: Scan drivers for velocity-sensitive keyboards (XB2/XB5, Fatar and Pulse) got a major update and are no longer compatible with HX3.5 due to lack of velocity RAM. The old 1/t emulation was insufficient in scan driver. Instead, a 256-step dynamic curve is now computed by main MCU and uploaded to FPGA. The curve slope is still adjusted by param #1363. Be sure to update scan driver along with FPGA when using a XB2 or Fatar keybed!

22.02.2026 MIDI Scan Driver #63.51 BETA

• Bugfix: Forgot to publish new MIDI scan driver, old version #63.50 from Jan 6th did not trigger percussion

25.01.2026 Manager #7.22, Firmware #7.063, Scan Driver #63.50, DSP #x1.26 BETA

• HX3 Manager/Bootload Utility: Bugfix, DFU upload tools did not start properly (required admin rights)
• HX3 Manager/CC Set Editor: New Value Mode 10, will switch a tab if min and max values are exactly met
• HX3 Manager/Update Finalizer: added support for future FatarScan61 board (scan board for single Fatar keybeds)
• Firmware: Improved CC handling, same MIDI CCs may be assigned multiple times without restrictions to control more than one parameter/tab at the same time, support for Value Mode 10
• Firmware: Bugfix, secondary drawbar set selection did not work (only applies for organs with 2 drawbar sets per manual using DBX drawbar boards)
• Firmware: Reverb enabled on plain Organ Main and 11-pin output when EFX disabled
• Firmware: Added support for PresetIndicator and FatarScan61 (new products)
• Scan Driver MIDI: Bugfix, lower manual did not work at all on #63.49 MIDI Scan Driver
• Scan Driver FT61: New version scanft61.dat for future FatarScan61 board
• DSP: Reverb enabled on plain Organ Main output

Note: Also see remarks for Firmware #7.060 when updating from older versions. Do not use defective Fatar Scan Driver #61.49 from Jan 6, 2025, it has been fixed on Jan 8th.

Reverb on plain Organ Main output had been disabled in prior firmware versions to prevent feedback through reverb DSP. With updated DSP (#x1.26) and new firmware, reverb and equalizer are available on Main (resp. 11-pin Leslie) output when external FX loop is disabled. With active FX loop, reverb and equalizer on Main output are both disabled to prevent double equalizing and reverb feedback.

A bug in HX3 Manager (introduced recently) was fixed which leads to multiple dialogs (dependant on Windows user account settings) when executing DFU/bootloader utils (which inadvertedly required admin user rights). This was a nasty one which may have prevented updates at all.

Firmware got a new CC handling with faster response times. Now it is possible to assign the same Channel/CC number to multiple random parameters without restrictions for improved flexibility (like value dependant control of vibrato rotary switch). Also, there is a new Value Mode #10 which will switch a tab (or any digital function) to OFF if MIDI value = min and switch to ON if value = max. In Value Mode #10, max may be smaller than min to get an inverted behaviour; it will respond to exact matches only.

11.12.2025 Manager #7.21, Firmware #7.060, FPGA #11122025, Organ Models, Speaker Models, Scan Driver #6x.49 (MIDI, Fatar) BETA!

This is a beta release for evaluation with major changes. Firmware may change in next few days without version number change - please compare release date.

• Firmware: Bugfix, HX3 sometimes did not recognize SD cards when inserted while running
• Firmware: Change in param #1387, now also "TG Taper Multiplier Adjust" (nominal value = 32..40) for tonewheel organs
• Firmware: Will start up with upper and lower voice (drawbar) preset from param #1504 (first drawbar set, nominal "0"), so design of "inverted keys" preset boards is more flexible (highest "B" key may be voice preset 11)
• FPGA: Updated biquad filter, higher output level on rotary simulation outputs and higher vibrato dynamic range
• FPGA: Added dithering in vibrato scanner circuit to prevent "ticker" noise
• FPGA: New AO28 filter structure with improved response
• FPGA: Built-in sine sweep generator for testing purposes
• FPGA: Additional MIDI FIFO for MIDI USB, both MIDI DIN inputs and MIDI USB may be used at the same time now (will merge MIDI data)
• Editor: New Sweep Generator
• Editor: Trackbar behaviour changed, did not send values on up/down click
• Editor: Removed obsolete params
• Scan Driver (MIDI, Fatar): Support for new FPGA with MIDI USB FIFO, implemented a separate MIDI USB receiver

Note: The HX3 Sound engine got a completely revised AO28 simulation with improved filters and new parameters. This firmware no longer supports 3 swell pedal models (old param #1384 in Organ Setup), instead there are 5 new params in volume control:

• 1091 (nom. =90) AO28 Swell Loudness Bass - controls loudness bass boost (on low swell pedal)
• 1092 (nom. =40) AO28 Swell Midrange Response - controls midrange lowpass frequency cutoff (-3dB point)
• 1093 (nom. =25) AO28 Swell Midrange Shelving - controls midrange slope (dB/Oct cutoff slope)
• 1094 (nom. =40) AO28 Swell Final Response - controls final low pass filter (overall response, > 4kHz range
• 1095 (nom. =35) AO28 Swell Loudness Treble - controls loudness treble boost (on low swell pedal)

As these params are saved along with organ model, it is possible to create highly customized swell response curves for each organ model, even with zero volume possible on minimal swell (B3 organ has a swell pedal with loudness corrected volume on minimal position). As an option, there is a new built-in sweep generator (tab Swell Sweep) which generates sweeps for comprehensive test of swell pedal frequency responses as well as external FX devices or even real organ preamps (like AO28 in B3 organ). Contact us for a licence code. Without licence, you may use the test generator, but you cannot record sweeps. See https://wiki.keyboardpartner.de/index.php?title=HX3_Sweep_Generator for details on sweep generator.

Param #1387 "TG Fixed Taper Value" is now also an adjustment for tapering of tonewheel organ models. Values greater than 32 will increase overall taper level, values lower than 32 will decrease it. In the past it was used only as a fixed taper value for non-tonewheel organs. Adjust #1387 for equal loudness of organ models and good tube amp overdrive. Note that too high levels will cause distortions in vibrato circuit. We fixed the crossover circuit (biquad filter) which was too lossy, so overall output level is now somewhat higher.

This update needs new organ/speaker models and new scan driver to work properly. If you want to use your existing organ and speaker models, be sure to set param values #1091 to #1095 according to nominal values as in table shown, also an adjustment of #2104 Rotary Input Level may be necessary in order to account for the higher biquad crossover output levels.

16.11.2025 Firmware #7.053

• Firmware: Bugfix, menu item "ContEarlyActn" (use early key contact on Fatar keybeds) did not appear in TG submenu; please note that this submenu only works with FatarScan driver
• Firmware: Bugfix, some menu groups too long and inconsistent
• Firmware: Added menu item "SMask" (Preset Save Enable Mask) in main submenu, determines which settings are saved/recalled from Common Preset

Note: This new menu makes "Save Enable Mask" (as by param #1498 or Preset Enable checkboxes in HX3 Manager/Panel) available by menu system. To make changes permanent, use adjacent submenu "Save Defaults". Also note that most menu enables (params #6000 ff.) have moved one position upwards due to new menu entry.

Bit	SubMenu	Saved Preset Item when ON
====	=========	=======================
0	UpperDB	Upper DBs
1	LowerDB	Lower DBs
2	PedalDB	Pedal DBs
3	EG,ADSR	EG Perc/ADSR Drawbars
4	Tabs,Knb	Tabs/Knobs/OrganModel/RotaryModel
5	S/F,Amp	Rotary Slow/Fast/Run, TubeAmp Gain
6	Volumes	Volumes/Equalizer/TrimPots
7	GMSynth	GM Synth

23.10.2025 Manager #7.20, Firmware #7.050, Organ Models

• Firmware: Bugfix, menu item "No DB1 @Perc" (disable 1' drawbar when percussion on) did not appear in organ submenu
• Firmware: Added support for new Halfmoon Switch assembly, works independently from footswitch or panel buttons
• Firmware: Added support for new MiniSwitch board with 8 switch inputs
• Firmware: Added support for OEM preamp control with MiniSwitch or Legacy Board
• Manager: Added support for MiniSwitch boards, MiniSwitch assignments
• Organ Models: Changed some vibrato params slightly to prevent ticker noise from vibrato scanner circuit

16.08.2025 Manager #7.19, Firmware #7.049

• Firmware: Bugfix, after MIDI Expression has been received, swell value did not change back to directly connected expression pedal
• Manager: Hourglass/Wait cursor while DFU uploads, compatibility issue with Windows 11

16.07.2025 Manager #7.17, Firmware #7.048, Fatar Scan Driver #61.47

• Manager/Updater: Replaced obsolete device item "Drawbar Expander" with "MIDI Expander Pro"
• Firmware: Support for older DB9-MPX drawbar boards on Legacy Board (switched A/B drawbar sets)
• Firmware: Fixed compatibility issues with HX3.6 boards. Version #7.048 may be used on HX3.6 boards without restrictions.
• Scan Driver: Improved key dynamic resolution (Fatar Scan Driver only), fixed "sometimes a missing note on GM Synth" bug

Note: Tweaking of parameter #1363 may be necessary to obtain optimal results on key dynamic range (GM Synth, MIDI output). Due to a glitch in ZIPping the files, an old FPGA version was supplied prior to July 22nd. Please download ZIP again.

04.06.2025 Manager #7.16, DSP Firmware #x1.25

• Manager/CC Set Editor: Added entry for external FX insert in Tab group 5 (Expander Pro)
• DSP Firmware: Bugfix, reverb output no longer routed to plain organ out (feedback problem)
• DSP Firmware: Will identify as "HX3 Sound Engine" in Windows Device Manager (was "HX3.5" even on HX3.7 boards before)

Note: To update DSP firmware, set board to BL mode and use "Single DFU File" update button in HX3 Manager's BootLoad utility. Open "dsp_fw.dfu" resp. "dsp_fw_NoGM.dfu" file.

19.03.2025 Firmware #7.047, FPGA #10022025

• Firmware/FPGA: Adjustable LED brightness for MIDI/Pro Expander, small bug in LED driver fixed
• Manager/CC Set Editor: Removed restrictions for CC Set DAT and CSV file names
• Manager: Open/Save dialogs streamlined
• FPGA: Support for external FX insert and Plexi Expander LED dimming

30.12.2024 Firmware #7.045

• Firmware: Effect Loop Insert provision for HX3.7 board
• Organ Models: Less manual output levels to prevent Rotary Sim crossover distortions
• Speaker Models: Less input levels to prevent Rotary Sim distortions on some speaker models

23.09.2024 Firmware #6.044

• Firmware: Drawbars moved slowly did not always return to zero when pushed fully in

23.07.2024 Firmware #6.043, Fatar Scan Driver #61.46

• Firmware: Bugfix, Rotary params not saved when changed by MenuPanel
• Firmware/Editor: Misleading name "Local Enable" of parameter #1373 changed to "MIDI Send Enables" resp. "MIDI Send" in MenuPanel
• Scan Driver (Fatar): Bugfix, MIDI Send Enables parameter did not work

31.06.2024 Firmware #6.042, FPGA #25062024, Scan Driver #6x.45

• Firmware, Editor: Support for new Organ Models parameter #1364, controls noisy "old/dry" (#1364=OFF) or quieter "new/lubed" (ON) mechanical key contacts
• Firmware, Editor: Support for new Organ Models parameter #1365, controls generator "loudness robbing" behaviour
• FPGA: Support for new/lubed contacts with elaborate contact resistance levels
• FPGA: More "compression" effect due to decreasing busbar and matching transformer load impedance when multiple notes played
• FPGA: New, more authentic approach for tone generator "loudness robbing" (drop of note volume when TG wheel is accessed by multiple notes played) and "level pumping/compression" (loss of drawbar volume when multiple notes played)
• Scan driver: Will produce a more authentic key-on- and key-off-click with different contact resistance levels applied

Note: Hammond organs with well-maintained (lubed) key contacts as well as newer Hammond keybed variants yield a somewhat lower key click volume. If a too loud key click is observed, update to newest firmware, FPGA and scan driver.

Organ Models parameter #1365 switches compression and loudness robbing effect on or off. It should be ON for all tonewheel organ models.

File Organ Models should be updated as well. If you wish to keep your existing (modified or custom) organ models, set parameters #1364 and #1365 to ON or OFF in HX3 Editor's Organ Models tab. Adjust Contact Spring Flex #1360 and Contact Spring Damping #1361 to personal taste. Click Store as Organ Model when done.

New HX3.6 scan drivers will no longer work on HX3.5, so they have been renamed to numbering scheme #6x.xx. Please use new scan driver(s) #6x.45 supplied in ZIP. Be sure to select the appropriate scan driver (Fatar, MIDI etc.) in HX3 BootLoad utility or HX3 Updater.

10.04.2024 Firmware #6.040, Scan Driver #5x.44

• Firmware: Somewhat improved frequency response for B3 swell type
• Firmware: Added Bit 6 "Separate Main/Pedal if RotaryBypass ON" in System Inits #1502, "Various Configurations 2" for separate plain organ/pedal outputs on mainboard jacks
• Firmware: Upper/Lower/Pedal Enables #1397..#1399 now part of presets (tab setting)
• Alternative scan driver with lower click noise volume ("lubed" contacts) available in separate ZIP file scan_44.ZIP

Note: It was not possible to get separate plain organ and pedal audio on main audio output jacks; when the RotaryBypass tab is ON, both organ and pedal audio are downmixed to mono on both Main L and R. This might be undesirable for customers without optional Extension Board when using an external rotary speaker.

When activated (checked), the new "Separate Main/Pedal if RotaryBypass ON" bit (in System Inits, parameter #1502) routes the plain organ and pedal audio separately to the mainboard L/R output channels when rotary/speaker simulation is bypassed. This bit should be OFF (unchecked) when an Extension Board is used as here both signals are present anyway.

09.04.2024 Firmware #6.039

• Firmware: Different dry/wet mixture approach for reverb. Params #1400..1402 now control dry/wet mixture, while analog control "Overall Reverb" #1086 controls mainly reverb time

Note: Some customers noted a "thin" reverb along with lower "Overall Reverb" #1086 values. In the past, parameter #1086 also controlled wet/dry mixture, which was undesirable. I changed behaviour to reverb time control on "Overall Reverb" #1086 parameter, while reverb "wet" levels are solely set by params #1400..1402. Max. reverb time (i.e. "Overall Reverb" #1086 potentiometer range) for each of the 3 reverb program (2 buttons) is still to be set by ''DSP Setup'' params #2005..#2007.

22.01.2024 FPGA #22012024

• FPGA/SoundEngine: Made some changes in rotary horn simulation to defeat artefacts on higher notes

09.01.2024 Firmware #6.038

• Firmware/Editor: Added System Inits parameter #1502 Various Configurations 2 bit 5 for swapping SLOW/FAST switch inputs (allows connection of Hammond halfmoon switches)

22.12.2023 Firmware #6.037, FPGA #16122023 or #17122023

• Firmware: Split On/Off, Split Point and Split Mode added as saved preset parameter (saving Tabs enabled)
• FPGA/SoundEngine: Two versions #16122023 and #17122023 added to try out, with different bass reflex "holes" for rotor speaker

Note: I'm not quite shure which FPGA/SoundEngine sounds best in respect off bass response. fpgamain.bin is version #10122023 with old bass response. I added two versions simulating different bass reflex "holes" to try out: #16122023 (fpgamain_16.bin, 120 Hz reflex hole) and #17122023 (fpgamain_17.bin, 60 Hz reflex hole), both in updates directory. Please tell me your opinion.

06.12.2023 Firmware #6.035, FPGA #10122023, Bootloader #1.07

• Firmware: Bugfix, digital inputs configured as switches were not read properly on startup
• Firmware: Removed "blinking LEDs on invalidated preset" feature
• FPGA: Removed diffusor from rotary horn main beam, less diffsor modulation to prevent "swirling" and grinding artefacts
• Bootloader: Support for slower SD Cards, Bootloader shuts down FPGA while loading files from SD to prevent corrupted images

Note: For Bootloader update to #1.07, board must be sent to KeyboardPartner for factory update (in case your SD Cards do not work properly).

03.11.2023 Manager #6.11, Firmware #6.034

• Firmware: Bugfix, saving voice presets with CANCEL key did not work properly
• Manager/Editor: Added System Inits #1502 Various Configurations 2, Bit 4: Delayed Save with CANCEL key
• Manager/Editor: Parameter group will be refreshed to update descriptions after pop-up menu "Set subsequent Values..." is executed

Note: When preset key inputs are configured as switches, HX3 will change preset or voice directly when "inverted" preset key is pressed, not on preset key release. This may also be appropriate with non-latching keys. A voice or preset is immediately saved by pressing the CANCEL key and then the desired save destination key.

If bit 4 of param #1502 Various Configurations 2 is set, you must hold CANCEL key for about 2 seconds and then the desired save destination key. This would prevent an unintended save of a voice or preset.

03.11.2023 Manager #6.10, Firmware #6.033

• Firmware: Bugfix, MIDI CC Special Function #1674 did not handle Percussion and 1' disable properly
• Firmware: Added Program Change Disable submenu ("No ProgChgRcv") to MIDI menu - if ON, HX3 will not respond to MIDI program changes
• Firmware: Master Volume, Reverb Level and Tube Amp Gain saved to Preset when enabled in System Inits
• Firmware: Tube Amp Gain will be restored fom Preset when bit 5 of Common Preset Save/Restore Mask bits (System Inits #1498) is set
• Firmware: Corrected display of Save Destination in menu depending on Common Preset Save/Restore Mask bits (System Inits #1498)
• Firmware: Limited MIDI swell sending to 8ms cycle; heavy use of swell pedal did clog MIDI transmissions
• Manager: Added Program Change Disable Parameter MIDI Setup #1376

For changelog of older versions, see HX3.6 Manager Current Firmware directory. external FX insert in Tab group 5 (Expander Pro)

• DSP Firmware: Bugfix, reverb output no longer routed to plain organ out (feedback problem)
• DSP Firmware: Will identify as "HX3 Sound Engine" in Windows Device Manager (was "HX3.5" even on HX3.7 boards before)

Note: To update DSP firmware, set board to BL mode and use "Single DFU File" update button in HX3 Manager's BootLoad utility. Open "dsp_fw.dfu" resp. "dsp_fw_NoGM.dfu" file.

19.03.2025 Firmware #7.047, FPGA #10022025

• Firmware/FPGA: Adjustable LED brightness for MIDI/Pro Expander, small bug in LED driver fixed
• Manager/CC Set Editor: Removed restrictions for CC Set DAT and CSV file names
• Manager: Open/Save dialogs streamlined
• FPGA: Support for external FX insert and Plexi Expander LED dimming

30.12.2024 Firmware #7.045

• Firmware: Effect Loop Insert provision for HX3.7 board
• Organ Models: Less manual output levels to prevent Rotary Sim crossover distortions
• Speaker Models: Less input levels to prevent Rotary Sim distortions on some speaker models

23.09.2024 Firmware #6.044

• Firmware: Drawbars moved slowly did not always return to zero when pushed fully in

23.07.2024 Firmware #6.043, Fatar Scan Driver #61.46

• Firmware: Bugfix, Rotary params not saved when changed by MenuPanel
• Firmware/Editor: Misleading name "Local Enable" of parameter #1373 changed to "MIDI Send Enables" resp. "MIDI Send" in MenuPanel
• Scan Driver (Fatar): Bugfix, MIDI Send Enables parameter did not work

31.06.2024 Firmware #6.042, FPGA #25062024, Scan Driver #6x.45

• Firmware, Editor: Support for new Organ Models parameter #1364, controls noisy "old/dry" (#1364=OFF) or quieter "new/lubed" (ON) mechanical key contacts
• Firmware, Editor: Support for new Organ Models parameter #1365, controls generator "loudness robbing" behaviour
• FPGA: Support for new/lubed contacts with elaborate contact resistance levels
• FPGA: More "compression" effect due to decreasing busbar and matching transformer load impedance when multiple notes played
• FPGA: New, more authentic approach for tone generator "loudness robbing" (drop of note volume when TG wheel is accessed by multiple notes played) and "level pumping/compression" (loss of drawbar volume when multiple notes played)
• Scan driver: Will produce a more authentic key-on- and key-off-click with different contact resistance levels applied

Note: Hammond organs with well-maintained (lubed) key contacts as well as newer Hammond keybed variants yield a somewhat lower key click volume. If a too loud key click is observed, update to newest firmware, FPGA and scan driver.

Organ Models parameter #1365 switches compression and loudness robbing effect on or off. It should be ON for all tonewheel organ models.

File Organ Models should be updated as well. If you wish to keep your existing (modified or custom) organ models, set parameters #1364 and #1365 to ON or OFF in HX3 Editor's Organ Models tab. Adjust Contact Spring Flex #1360 and Contact Spring Damping #1361 to personal taste. Click Store as Organ Model when done.

New HX3.6 scan drivers will no longer work on HX3.5, so they have been renamed to numbering scheme #6x.xx. Please use new scan driver(s) #6x.45 supplied in ZIP. Be sure to select the appropriate scan driver (Fatar, MIDI etc.) in HX3 BootLoad utility or HX3 Updater.

10.04.2024 Firmware #6.040, Scan Driver #5x.44

• Firmware: Somewhat improved frequency response for B3 swell type
• Firmware: Added Bit 6 "Separate Main/Pedal if RotaryBypass ON" in System Inits #1502, "Various Configurations 2" for separate plain organ/pedal outputs on mainboard jacks
• Firmware: Upper/Lower/Pedal Enables #1397..#1399 now part of presets (tab setting)
• Alternative scan driver with lower click noise volume ("lubed" contacts) available in separate ZIP file scan_44.ZIP

Note: It was not possible to get separate plain organ and pedal audio on main audio output jacks; when the RotaryBypass tab is ON, both organ and pedal audio are downmixed to mono on both Main L and R. This might be undesirable for customers without optional Extension Board when using an external rotary speaker.

When activated (checked), the new "Separate Main/Pedal if RotaryBypass ON" bit (in System Inits, parameter #1502) routes the plain organ and pedal audio separately to the mainboard L/R output channels when rotary/speaker simulation is bypassed. This bit should be OFF (unchecked) when an Extension Board is used as here both signals are present anyway.

09.04.2024 Firmware #6.039

• Firmware: Different dry/wet mixture approach for reverb. Params #1400..1402 now control dry/wet mixture, while analog control "Overall Reverb" #1086 controls mainly reverb time

Note: Some customers noted a "thin" reverb along with lower "Overall Reverb" #1086 values. In the past, parameter #1086 also controlled wet/dry mixture, which was undesirable. I changed behaviour to reverb time control on "Overall Reverb" #1086 parameter, while reverb "wet" levels are solely set by params #1400..1402. Max. reverb time (i.e. "Overall Reverb" #1086 potentiometer range) for each of the 3 reverb program (2 buttons) is still to be set by ''DSP Setup'' params #2005..#2007.

22.01.2024 FPGA #22012024

• FPGA/SoundEngine: Made some changes in rotary horn simulation to defeat artefacts on higher notes

09.01.2024 Firmware #6.038

• Firmware/Editor: Added System Inits parameter #1502 Various Configurations 2 bit 5 for swapping SLOW/FAST switch inputs (allows connection of Hammond halfmoon switches)

22.12.2023 Firmware #6.037, FPGA #16122023 or #17122023

• Firmware: Split On/Off, Split Point and Split Mode added as saved preset parameter (saving Tabs enabled)
• FPGA/SoundEngine: Two versions #16122023 and #17122023 added to try out, with different bass reflex "holes" for rotor speaker

Note: I'm not quite shure which FPGA/SoundEngine sounds best in respect off bass response. fpgamain.bin is version #10122023 with old bass response. I added two versions simulating different bass reflex "holes" to try out: #16122023 (fpgamain_16.bin, 120 Hz reflex hole) and #17122023 (fpgamain_17.bin, 60 Hz reflex hole), both in updates directory. Please tell me your opinion.

06.12.2023 Firmware #6.035, FPGA #10122023, Bootloader #1.07

• Firmware: Bugfix, digital inputs configured as switches were not read properly on startup
• Firmware: Removed "blinking LEDs on invalidated preset" feature
• FPGA: Removed diffusor from rotary horn main beam, less diffsor modulation to prevent "swirling" and grinding artefacts
• Bootloader: Support for slower SD Cards, Bootloader shuts down FPGA while loading files from SD to prevent corrupted images

Note: For Bootloader update to #1.07, board must be sent to KeyboardPartner for factory update (in case your SD Cards do not work properly).

03.11.2023 Manager #6.11, Firmware #6.034

• Firmware: Bugfix, saving voice presets with CANCEL key did not work properly
• Manager/Editor: Added System Inits #1502 Various Configurations 2, Bit 4: Delayed Save with CANCEL key
• Manager/Editor: Parameter group will be refreshed to update descriptions after pop-up menu "Set subsequent Values..." is executed

Note: When preset key inputs are configured as switches, HX3 will change preset or voice directly when "inverted" preset key is pressed, not on preset key release. This may also be appropriate with non-latching keys. A voice or preset is immediately saved by pressing the CANCEL key and then the desired save destination key.

If bit 4 of param #1502 Various Configurations 2 is set, you must hold CANCEL key for about 2 seconds and then the desired save destination key. This would prevent an unintended save of a voice or preset.

03.11.2023 Manager #6.10, Firmware #6.033

• Firmware: Bugfix, MIDI CC Special Function #1674 did not handle Percussion and 1' disable properly
• Firmware: Added Program Change Disable submenu ("No ProgChgRcv") to MIDI menu - if ON, HX3 will not respond to MIDI program changes
• Firmware: Master Volume, Reverb Level and Tube Amp Gain saved to Preset when enabled in System Inits
• Firmware: Tube Amp Gain will be restored fom Preset when bit 5 of Common Preset Save/Restore Mask bits (System Inits #1498) is set
• Firmware: Corrected display of Save Destination in menu depending on Common Preset Save/Restore Mask bits (System Inits #1498)
• Firmware: Limited MIDI swell sending to 8ms cycle; heavy use of swell pedal did clog MIDI transmissions
• Manager: Added Program Change Disable Parameter MIDI Setup #1376

For changelog of older versions, see HX3.6 Manager Current Firmware directory.2, FPGA #25062024, Scan Driver #6x.45

• Firmware, Editor: Support for new Organ Models parameter #1364, controls noisy "old/dry" (#1364=OFF) or quieter "new/lubed" (ON) mechanical key contacts
• Firmware, Editor: Support for new Organ Models parameter #1365, controls generator "loudness robbing" behaviour
• FPGA: Support for new/lubed contacts with elaborate contact resistance levels
• FPGA: More "compression" effect due to decreasing busbar and matching transformer load impedance when multiple notes played
• FPGA: New, more authentic approach for tone generator "loudness robbing" (drop of note volume when TG wheel is accessed by multiple notes played) and "level pumping/compression" (loss of drawbar volume when multiple notes played)
• Scan driver: Will produce a more authentic key-on- and key-off-click with different contact resistance levels applied

Note: Hammond organs with well-maintained (lubed) key contacts as well as newer Hammond keybed variants yield a somewhat lower key click volume. If a too loud key click is observed, update to newest firmware, FPGA and scan driver.

Organ Models parameter #1365 switches compression and loudness robbing effect on or off. It should be ON for all tonewheel organ models.

File Organ Models should be updated as well. If you wish to keep your existing (modified or custom) organ models, set parameters #1364 and #1365 to ON or OFF in HX3 Editor's Organ Models tab. Adjust Contact Spring Flex #1360 and Contact Spring Damping #1361 to personal taste. Click Store as Organ Model when done.

New HX3.6 scan drivers will no longer work on HX3.5, so they have been renamed to numbering scheme #6x.xx. Please use new scan driver(s) #6x.45 supplied in ZIP. Be sure to select the appropriate scan driver (Fatar, MIDI etc.) in HX3 BootLoad utility or HX3 Updater.

10.04.2024 Firmware #6.040, Scan Driver #5x.44

• Firmware: Somewhat improved frequency response for B3 swell type
• Firmware: Added Bit 6 "Separate Main/Pedal if RotaryBypass ON" in System Inits #1502, "Various Configurations 2" for separate plain organ/pedal outputs on mainboard jacks
• Firmware: Upper/Lower/Pedal Enables #1397..#1399 now part of presets (tab setting)
• Alternative scan driver with lower click noise volume ("lubed" contacts) available in separate ZIP file scan_44.ZIP

Note: It was not possible to get separate plain organ and pedal audio on main audio output jacks; when the RotaryBypass tab is ON, both organ and pedal audio are downmixed to mono on both Main L and R. This might be undesirable for customers without optional Extension Board when using an external rotary speaker.

When activated (checked), the new "Separate Main/Pedal if RotaryBypass ON" bit (in System Inits, parameter #1502) routes the plain organ and pedal audio separately to the mainboard L/R output channels when rotary/speaker simulation is bypassed. This bit should be OFF (unchecked) when an Extension Board is used as here both signals are present anyway.

09.04.2024 Firmware #6.039

• Firmware: Different dry/wet mixture approach for reverb. Params #1400..1402 now control dry/wet mixture, while analog control "Overall Reverb" #1086 controls mainly reverb time

Note: Some customers noted a "thin" reverb along with lower "Overall Reverb" #1086 values. In the past, parameter #1086 also controlled wet/dry mixture, which was undesirable. I changed behaviour to reverb time control on "Overall Reverb" #1086 parameter, while reverb "wet" levels are solely set by params #1400..1402. Max. reverb time (i.e. "Overall Reverb" #1086 potentiometer range) for each of the 3 reverb program (2 buttons) is still to be set by ''DSP Setup'' params #2005..#2007.

22.01.2024 FPGA #22012024

• FPGA/SoundEngine: Made some changes in rotary horn simulation to defeat artefacts on higher notes

09.01.2024 Firmware #6.038

• Firmware/Editor: Added System Inits parameter #1502 Various Configurations 2 bit 5 for swapping SLOW/FAST switch inputs (allows connection of Hammond halfmoon switches)

22.12.2023 Firmware #6.037, FPGA #16122023 or #17122023

• Firmware: Split On/Off, Split Point and Split Mode added as saved preset parameter (saving Tabs enabled)
• FPGA/SoundEngine: Two versions #16122023 and #17122023 added to try out, with different bass reflex "holes" for rotor speaker

Note: I'm not quite shure which FPGA/SoundEngine sounds best in respect off bass response. fpgamain.bin is version #10122023 with old bass response. I added two versions simulating different bass reflex "holes" to try out: #16122023 (fpgamain_16.bin, 120 Hz reflex hole) and #17122023 (fpgamain_17.bin, 60 Hz reflex hole), both in updates directory. Please tell me your opinion.

06.12.2023 Firmware #6.035, FPGA #10122023, Bootloader #1.07

• Firmware: Bugfix, digital inputs configured as switches were not read properly on startup
• Firmware: Removed "blinking LEDs on invalidated preset" feature
• FPGA: Removed diffusor from rotary horn main beam, less diffsor modulation to prevent "swirling" and grinding artefacts
• Bootloader: Support for slower SD Cards, Bootloader shuts down FPGA while loading files from SD to prevent corrupted images

Note: For Bootloader update to #1.07, board must be sent to KeyboardPartner for factory update (in case your SD Cards do not work properly).

03.11.2023 Manager #6.11, Firmware #6.034

• Firmware: Bugfix, saving voice presets with CANCEL key did not work properly
• Manager/Editor: Added System Inits #1502 Various Configurations 2, Bit 4: Delayed Save with CANCEL key
• Manager/Editor: Parameter group will be refreshed to update descriptions after pop-up menu "Set subsequent Values..." is executed

Note: When preset key inputs are configured as switches, HX3 will change preset or voice directly when "inverted" preset key is pressed, not on preset key release. This may also be appropriate with non-latching keys. A voice or preset is immediately saved by pressing the CANCEL key and then the desired save destination key.

If bit 4 of param #1502 Various Configurations 2 is set, you must hold CANCEL key for about 2 seconds and then the desired save destination key. This would prevent an unintended save of a voice or preset.

03.11.2023 Manager #6.10, Firmware #6.033

• Firmware: Bugfix, MIDI CC Special Function #1674 did not handle Percussion and 1' disable properly
• Firmware: Added Program Change Disable submenu ("No ProgChgRcv") to MIDI menu - if ON, HX3 will not respond to MIDI program changes
• Firmware: Master Volume, Reverb Level and Tube Amp Gain saved to Preset when enabled in System Inits
• Firmware: Tube Amp Gain will be restored fom Preset when bit 5 of Common Preset Save/Restore Mask bits (System Inits #1498) is set
• Firmware: Corrected display of Save Destination in menu depending on Common Preset Save/Restore Mask bits (System Inits #1498)
• Firmware: Limited MIDI swell sending to 8ms cycle; heavy use of swell pedal did clog MIDI transmissions
• Manager: Added Program Change Disable Parameter MIDI Setup #1376

For changelog of older versions, see HX3.6 Manager Current Firmware directory. external FX insert in Tab group 5 (Expander Pro)

• DSP Firmware: Bugfix, reverb output no longer routed to plain organ out (feedback problem)
• DSP Firmware: Will identify as "HX3 Sound Engine" in Windows Device Manager (was "HX3.5" even on HX3.7 boards before)

Note: To update DSP firmware, set board to BL mode and use "Single DFU File" update button in HX3 Manager's BootLoad utility. Open "dsp_fw.dfu" resp. "dsp_fw_NoGM.dfu" file.

19.03.2025 Firmware #7.047, FPGA #10022025

• Firmware/FPGA: Adjustable LED brightness for MIDI/Pro Expander, small bug in LED driver fixed
• Manager/CC Set Editor: Removed restrictions for CC Set DAT and CSV file names
• Manager: Open/Save dialogs streamlined
• FPGA: Support for external FX insert and Plexi Expander LED dimming

30.12.2024 Firmware #7.045

• Firmware: Effect Loop Insert provision for HX3.7 board
• Organ Models: Less manual output levels to prevent Rotary Sim crossover distortions
• Speaker Models: Less input levels to prevent Rotary Sim distortions on some speaker models

23.09.2024 Firmware #6.044

• Firmware: Drawbars moved slowly did not always return to zero when pushed fully in

23.07.2024 Firmware #6.043, Fatar Scan Driver #61.46

• Firmware: Bugfix, Rotary params not saved when changed by MenuPanel
• Firmware/Editor: Misleading name "Local Enable" of parameter #1373 changed to "MIDI Send Enables" resp. "MIDI Send" in MenuPanel
• Scan Driver (Fatar): Bugfix, MIDI Send Enables parameter did not work

31.06.2024 Firmware #6.042, FPGA #25062024, Scan Driver #6x.45

• Firmware, Editor: Support for new Organ Models parameter #1364, controls noisy "old/dry" (#1364=OFF) or quieter "new/lubed" (ON) mechanical key contacts
• Firmware, Editor: Support for new Organ Models parameter #1365, controls generator "loudness robbing" behaviour
• FPGA: Support for new/lubed contacts with elaborate contact resistance levels
• FPGA: More "compression" effect due to decreasing busbar and matching transformer load impedance when multiple notes played
• FPGA: New, more authentic approach for tone generator "loudness robbing" (drop of note volume when TG wheel is accessed by multiple notes played) and "level pumping/compression" (loss of drawbar volume when multiple notes played)
• Scan driver: Will produce a more authentic key-on- and key-off-click with different contact resistance levels applied

Note: Hammond organs with well-maintained (lubed) key contacts as well as newer Hammond keybed variants yield a somewhat lower key click volume. If a too loud key click is observed, update to newest firmware, FPGA and scan driver.

Organ Models parameter #1365 switches compression and loudness robbing effect on or off. It should be ON for all tonewheel organ models.

File Organ Models should be updated as well. If you wish to keep your existing (modified or custom) organ models, set parameters #1364 and #1365 to ON or OFF in HX3 Editor's Organ Models tab. Adjust Contact Spring Flex #1360 and Contact Spring Damping #1361 to personal taste. Click Store as Organ Model when done.

New HX3.6 scan drivers will no longer work on HX3.5, so they have been renamed to numbering scheme #6x.xx. Please use new scan driver(s) #6x.45 supplied in ZIP. Be sure to select the appropriate scan driver (Fatar, MIDI etc.) in HX3 BootLoad utility or HX3 Updater.

10.04.2024 Firmware #6.040, Scan Driver #5x.44

• Firmware: Somewhat improved frequency response for B3 swell type
• Firmware: Added Bit 6 "Separate Main/Pedal if RotaryBypass ON" in System Inits #1502, "Various Configurations 2" for separate plain organ/pedal outputs on mainboard jacks
• Firmware: Upper/Lower/Pedal Enables #1397..#1399 now part of presets (tab setting)
• Alternative scan driver with lower click noise volume ("lubed" contacts) available in separate ZIP file scan_44.ZIP

Note: It was not possible to get separate plain organ and pedal audio on main audio output jacks; when the RotaryBypass tab is ON, both organ and pedal audio are downmixed to mono on both Main L and R. This might be undesirable for customers without optional Extension Board when using an external rotary speaker.

When activated (checked), the new "Separate Main/Pedal if RotaryBypass ON" bit (in System Inits, parameter #1502) routes the plain organ and pedal audio separately to the mainboard L/R output channels when rotary/speaker simulation is bypassed. This bit should be OFF (unchecked) when an Extension Board is used as here both signals are present anyway.

09.04.2024 Firmware #6.039

• Firmware: Different dry/wet mixture approach for reverb. Params #1400..1402 now control dry/wet mixture, while analog control "Overall Reverb" #1086 controls mainly reverb time

Note: Some customers noted a "thin" reverb along with lower "Overall Reverb" #1086 values. In the past, parameter #1086 also controlled wet/dry mixture, which was undesirable. I changed behaviour to reverb time control on "Overall Reverb" #1086 parameter, while reverb "wet" levels are solely set by params #1400..1402. Max. reverb time (i.e. "Overall Reverb" #1086 potentiometer range) for each of the 3 reverb program (2 buttons) is still to be set by ''DSP Setup'' params #2005..#2007.

22.01.2024 FPGA #22012024

• FPGA/SoundEngine: Made some changes in rotary horn simulation to defeat artefacts on higher notes

09.01.2024 Firmware #6.038

• Firmware/Editor: Added System Inits parameter #1502 Various Configurations 2 bit 5 for swapping SLOW/FAST switch inputs (allows connection of Hammond halfmoon switches)

22.12.2023 Firmware #6.037, FPGA #16122023 or #17122023

• Firmware: Split On/Off, Split Point and Split Mode added as saved preset parameter (saving Tabs enabled)
• FPGA/SoundEngine: Two versions #16122023 and #17122023 added to try out, with different bass reflex "holes" for rotor speaker

Note: I'm not quite shure which FPGA/SoundEngine sounds best in respect off bass response. fpgamain.bin is version #10122023 with old bass response. I added two versions simulating different bass reflex "holes" to try out: #16122023 (fpgamain_16.bin, 120 Hz reflex hole) and #17122023 (fpgamain_17.bin, 60 Hz reflex hole), both in updates directory. Please tell me your opinion.

06.12.2023 Firmware #6.035, FPGA #10122023, Bootloader #1.07

• Firmware: Bugfix, digital inputs configured as switches were not read properly on startup
• Firmware: Removed "blinking LEDs on invalidated preset" feature
• FPGA: Removed diffusor from rotary horn main beam, less diffsor modulation to prevent "swirling" and grinding artefacts
• Bootloader: Support for slower SD Cards, Bootloader shuts down FPGA while loading files from SD to prevent corrupted images

Note: For Bootloader update to #1.07, board must be sent to KeyboardPartner for factory update (in case your SD Cards do not work properly).

03.11.2023 Manager #6.11, Firmware #6.034

• Firmware: Bugfix, saving voice presets with CANCEL key did not work properly
• Manager/Editor: Added System Inits #1502 Various Configurations 2, Bit 4: Delayed Save with CANCEL key
• Manager/Editor: Parameter group will be refreshed to update descriptions after pop-up menu "Set subsequent Values..." is executed

Note: When preset key inputs are configured as switches, HX3 will change preset or voice directly when "inverted" preset key is pressed, not on preset key release. This may also be appropriate with non-latching keys. A voice or preset is immediately saved by pressing the CANCEL key and then the desired save destination key.

If bit 4 of param #1502 Various Configurations 2 is set, you must hold CANCEL key for about 2 seconds and then the desired save destination key. This would prevent an unintended save of a voice or preset.

03.11.2023 Manager #6.10, Firmware #6.033

• Firmware: Bugfix, MIDI CC Special Function #1674 did not handle Percussion and 1' disable properly
• Firmware: Added Program Change Disable submenu ("No ProgChgRcv") to MIDI menu - if ON, HX3 will not respond to MIDI program changes
• Firmware: Master Volume, Reverb Level and Tube Amp Gain saved to Preset when enabled in System Inits
• Firmware: Tube Amp Gain will be restored fom Preset when bit 5 of Common Preset Save/Restore Mask bits (System Inits #1498) is set
• Firmware: Corrected display of Save Destination in menu depending on Common Preset Save/Restore Mask bits (System Inits #1498)
• Firmware: Limited MIDI swell sending to 8ms cycle; heavy use of swell pedal did clog MIDI transmissions
• Manager: Added Program Change Disable Parameter MIDI Setup #1376

01.11.2023 Manager #6.10, FPGA #01112023, Firmware #6.031, new speakers.dat

• FPGA: Bugfix, added saturation logic for AO28 preamp sim, final gain stage produced overflow when multiple notes played in lowest octave
• Firmware: Removed inconsistency on reverb setting in Common Presets
• Firmware: Bugfix, MIDI CC Mode 7 did not work properly
• Firmware: Added new mode "9" in CC Set interpreter
• Manager: Added new mode "9" in CC Set Editor for buttons etc.: HX3 will accept MIDI CC as "ON" when value is in range, as "OFF" if not
• Manager: Added entry for Rotary Speaker Models parameter "Frequency Response", #2110
• Manager: Replaced separate custom CC sets with Nord C2D (9) and Viscount Legend (10)

Note: In FPGA #01112023, parameter #2110 controls overall frequency response of speaker simulation. Upper frequency equals (value + 1) 120.3 in Hz, so -3dB point is approx. 6 kHz at value 50 (OK for most speakers). Correct this value in your own speaker.dat configuration (unused value in old settings). However, we recommend new speakers.dat* update file with improved speaker models.

26.10.2023 Firmware #6.031, Manager #6.09, FPGA #18102023, new speakers.dat

• Firmware: Bugfix, MIDI channel setting was not working
• Firmware: Added MIDI CC Vibrato V1..C3 "direct" parameters 1680 to 1685 as on HX3.5
• FPGA: Improved rotary horn and rotor modulation, rotor now stereo, new PR40 speaker preset
• Manager: Added entry for new PR40 speaker preset

Note: On some boards the GM/H100 Setup parameter #1491 was set to 85. For higher line output level, set #1491 to 105 instead.

14.10.2023 Firmware #6.030, Manager #6.09, FPGA #14102023, new speakers.dat

• Firmware: Added frequency indicators for Equalizer menus
• Firmware: Equalizer Q/Peak range was way too high, limited to 1/3 octave on max. now, width is 1 octave on mid position
• Firmware: Bugfix, did not save Presets in main menu, Save to menu had glitches
• Firmware: Added support for stereo rotor throb
• Manager/Panel: Added frequency indicators for Equalizer values
• Manager/Editor: Added rotor stereo throb params
• Manager/Updater: Bugfix, DSP version info was sometimes empty after ReInit
• Manager: Improved recognition of deprecated firmware and FPGA
• FPGA: Improved I2S interface to DAC/DSP (see note)
• FPGA: Stereo rotor throb for rotary sim, improved horn reflections
• Speaker models: Added stereo rotor parameters, improved horn diffusor and reflection delays

Note: When playing notes, a few boards produce a "grainy" noise sometimes after switching on. This was caused by timing issues from FPGA to DAC and DSP, and we solved it by improved I2S interfacing within FPGA structure. If updating the FPGA Sound Engine does not help and you still experience such behaviour, a small hardware modification is necessary. See Migration guide mentioned above.

20.09.2023 Firmware #6.027, Manager #6.07, Organ/Speaker Models

• Firmware: Added Increment/Decrement button assignments in Switch Remap for Presets, Drawbar Voices (U/L/P), Speaker Models and Organ Models (Button Assign values 64 to 75)
• Firmware: Inc/Dec button assignment for Transpose moved to values 76, 77 in Switch Remap
• Firmware: Fixed a bug in Analog Remap, MIDI CC Send only assignments. MIDI CC Send moved to #1520..#1531
• Firmware: Small bugfix in MIDI value scaling on sended values (CC Set Editor, Value Mode 1)
• Firmware: Added button assignments in Switch Remap for selecting drawbar destination (90=U/L/P Toggle, alternatively 91=Upper, 92=Lower, 93=Pedal) in "single drawbar set" mode
• Firmware: Added a 6-Button-mode (System Inits #1497 = 3) for Vibrato (V1..C3) in addition to hardware knob mode, 3-button (V1, V2, V1+V2, V/C) and 4-button (V1, V2, V3, V/C) modes. 3-button mode slightly changed, press both V1 and V2 simultaneously to obtain V3.
• Manager: Reset Window positions by holding SHIFT key when starting HX3 Manager to avoid system errors and "lost" or hidden windows
• Manager/CC Set Editor: Added help text in status bar for table entries
• Manager/CC Set Editor: Removed "Try Out" button as it did overwrite CC Set 9. Now simple Upload/Save button instead.
• Manager/Editor: Added pop-up menu entries (right mouse click) in Editor main table for easier access to MIDI CC and hardware input assignments
• Manager/Editor: Small changes for reliable Organ Model and Speaker Model recall
• Organ/Speaker Models: Small changes

Note: A hardware button assigned to value 90 = Single DB set U/L/P Toggle in Switch Remap will toggle a single drawbar set destination from Upper (LED off) to Lower (LED on) to Pedal (LED flashing) to Upper etc. However, DB destination may be also set by use of 3 separate buttons (Switch Remap values 91..93). If no pedal is present, you may use just the 92 = Lower button as this one may be toggled ON/OFF (Upper manual is assigned when OFF).

Pressing INC and DEC buttons at the same time will reset their value (Preset, Voice, Model or Transpose) to 0.

An analog control (drawbar, pot) assigned in Analog Remap to values 200..211, "MIDI CC Send #0..#11" will send MIDI control change only and will perform no other function. The channel and CC# has to be defined in CC Set Edtor, group MIDI CC Send Function. Assigned channel numbers are fixed in this case and will not move with HX3 MIDI channel.

05.09.2023 Firmware #6.026, Manager #6.05

• Firmware: Vibrato knob setting did not load properly from startup preset 0
• Firmware: Increased switch settle time for old DB9-MPX drawbars
• Manager/Panel: Did not send edited Preset Name to HX3

11.08.2023 Firmware #6.023, Manager #6.04

• Manager/Editor: Added a pop-up menu (right mouse click) in Editor main table to change all subsequent values in selected group
• Manager/Editor: Cleaned up obsolete entries
• Firmware: Fixed a glitch on ADC_24 drawbar read, did invalidate first drawbar of recalled Voice/Preset on change from Live to any Voice/Preset
• Firmware: Removed debug information which caused Sync errors on all Switch Remap parameters

Note: This was a nasty one. ADC did not read first drawbar value correctly (caused by charge injection effects on input multiplexer, btw), so after changing from Live DBs to Voice preset, the Voice recalled was invalidated immediately because HX3 controller thought that first drawbar was moved.

01.08.2023 Editor/Manager #6.03, Firmware #6.022

• Manager: Common HX3 Manager for HX3.5 and HX3.6
• Manager: Re-sorted Editor table entries for better access
• Manager: Color coding of Default, Preset, Organ and Speaker model parameters
• Manager: Fixed bubble help of "Various Configurations 2" Bits
• Firmware: Changed assignment numbers for preset buttons
• Firmware: Added Capset/Tapering to TG submenu
• Firmware: Moved "Sync PHR to Rotary" parameter (#1459) to System Inits, Bit 3 of Various Configurations 2

Note: Switch Remap codes for Voice and Preset buttons have changed to make room for new Organ and Speaker Model button codes. Check section Switch Remap for voice/preset buttons affected.

07.07.2023 Editor/Manager #6.02, Firmware #6.021

• Manager: Fixed bug in DFU updater (error 64 occured when harddisk path contained special characters)
• Firmware: Fixed TouchOSC MIDI bug, did not send GM program numbers
• Firmware: Added MIDI support for storing Defaults, System Inits, Organ Model, Speaker Model. See MIDI_KBP_CCset.pdf for details.
• Added MIDI support in CC set #8 for Organ/Speaker Model Inc/Dec buttons
• New items in MIDI CC Set Editor, re-arranged groups for readability

02.06.2023 Editor/Manager #6.01, BootLoader #1.05, Firmware #6.020

• Manager (all): Removed outdated help function, see HX3.6 Manager user manual instead
• Manager: Re-arranged startup window, old window did not fit on small screens
• Manager: Fixed bug in parameter INI file save
• Preset Mover: Fixed bug in preset file save
• Presets/Defaults: Accidentally left Fatar keybed Octave Shift tabs #1174 and #1175 on
• BootLoad: added libusb files for DFU mode, missing on some Windows installations
• Firmware/Firmware Bootloader: Changed MenuPanel LCD driver for new PCA9555D IC (see note)
• Firmware: Bugfix of I2C driver, Panel16 and Preset16 boards were not working when MenuPanel not connected

Note: Manufacturer NXP did a mask change on PCA9555D IC used on MenuPanel assembly sold from May 2023 and up. Therefore, new MenuPanels might no longer work with older Firmware or Firmware Bootloader due to timing issues. Driver was changed to new timing in firmware version 6.019; however, Firmware Bootloader 1.02 might show issues with display content or will not display any information at all. In this case, send HX3.6 board to KeyboardPartner for a free bootloader update.

Bootloader #1.05 will accept commands from main firmware without MenuPanel attached. With no MenuPanel, Bootloader #1.05 will always try a SD card update if card is found. However, Bootloader may be updated by factory only.

28.04.2023 Firmware #6.018

• Firmware: Added support for XB2 Kit
• Firmware: Bugfix, Vibrato buttons V1..V3, V/CH did not work on Panel16 installations

27.04.2023 Firmware #6.017

• Firmware: Bugfix, did not save drawbar settings on Preset 0 (after power-up)
• Firmware: Bugfix, MIDI Submenu was not available on MenuPanel
• Firmware: Bugfix, Octave Downshift tabs were erraneously saved to Presets. Saved to Startup Defaults now

12.04.2023 Firmware #6.015

• Firmware: Bugfix, Updates via FTDI cable erraneous
• Manager: Bugfix, Reconnect did not work with FTDI cable

Note: When using Firmware 6.014 and below, do NOT update via FTDI cable. Use MIDI/USB instead.

For changelog of older versions, see HX3.6 Manager Current Firmware directory.