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Firmware updates are occassionally available for some products. Based on their design some products can be updated by the end user. We provide free update software, and firmware files for these products.

NO WARRANTY: Firmware updates, software, and procedures listed on this page come with no warranty or technical support. We can update your module for only the cost of shipping if you feel uncomfortable performing the update yourself.

Depending on the product a different tool or procedure may be used to update the firmware. Please click on the link in the Update Type beside the firmware info for instructions and download links for the tool.

Product Firmware Version Updated Features Update Type
K4816 Pattern Generator (Buchla) 1.22
  • all the functions of the K4815 firmware ver. 1.21
K4815 Pattern Generator 1.23
  • improved handling of motion type encoder for older units
K4815 Pattern Generator 1.21
  • patterns, motions and scales can be updated over MIDI using the KPatternEdit software
  • clock divider and motion length show popup with the value when changed
  • MIDI CC control over pattern type, motion start and motion length
  • MIDI start, continue and stop handling improvements
  • reset switch / input sends song position pointer message
  • numerous bugfixes and improvements
K1600 MIDI Converter 1.31

all the improvents of version 1.21:

  • added Arp-Odyssey duophonic mode
  • clock divider setting now changed on channel 16 only
  • clock divider behaviour now sends a pulse on first tick following a start message

all the improvements of version 1.30:

  • configurable legato retrigger mode for voices
  • MIDI start, continue and stop handling improvements
  • reset pulse output when MIDI start is received - better compatibility with analog sequencers
  • MIDI song position pointer works with any clock division

additional bug fixes and improvements

K2579 Step Sequencer 1.02
  • improvement for pulse input triggering
K65 PHENOL 1.25
  • version 1.25 changes:
    • mixer pan pot leakage fixed
  • version 1.24 changes:
    • sequencer can now be started while external MIDI clock is used
    • delay LED works correctly with low settings
    • bug fixes and improvements
    • usage notes included with firmware archive
K66 CARBON 1.08

Version 1.08 was released: 2017-04-06

  • version 1.08 changes:
    • show externally locked MIDI clock tempo
    • local tempo changes are locked out when externally synced
    • tap tempo is locked out when externally synced
    • GUI clock source display refreshes on song load/clear
    • added clock source in menu instead of multiple ins
    • clock out run on straight time signal
    • GUI displays "EXT" in green colour when locked to ext sync, grey otherwise
    • playback can be controlled locally to start while ext synced
  • version 1.07 changes:
    • MIDI remote control ignores messages correctly when MIDI Rmt Ctrl is off
    • external clock sync is completely redesigned and should stay locked to external clock better
    • external clock loss causes correct stop behaviour
    • removed some debug code from the clock module
    • small fixes to make code cleaner - should not have any effect
  • version 1.06 changes:
    • Fixed possible buffer overrun during real-time recording
  • version 1.05 changes:
    • LCD type can be set via SYSEX during production
    • Fixed real-time recording of CC data
    • MIDI inputs now respond on all channels
    • Change to how song.c handles invalid song loading
  • version 1.04 changes:
    • Fixed a regression found in 1.03 where MIDI program change couldn't be disabled.
  • version 1.03 changes:
    • support for new LCD module used on new production units (shipping November 2016)
    • song version writes back properly into song file - this is needed to support automatic song updating on newer firmwares
    • program change can be disabled after set
    • support for MIDI song select as part of the MIDI remote control mode
    • metronome volume (duration) can be controlled
    • menu timeout can be adjusted or disabled
    • external MIDI clock input can be disabled on a per-port basis
    • step length and arpeggiator can now be set to triplet divisions
    • step edit can set a note to any valid MIDI note number and notes that become invalid due to transposing are discarded while being sent
    • step size in the track info display now displays properly after a scene change
DfuSe (Win)
dfu-util (OS X / Linux)

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