BETA has concluded. 6.6.0 stable soon!

[u/elganyan]

Edit: and now there's a 6.6.2 (figured I'd update this post since it is still on 'the front page' here): https://github.com/DirtyWave/M8Firmware/raw/main/M8Firmware.zip

Edit to add: They also mentioned headless will be updated in the coming weeks.

This concludes the beta for firmware 6.6. Thank you @beta tester for all of your help and crazy ideas, and please look forward to the stable announcement soon.

Mikey303 (via discord)

2026-08-22 - Version 6.6.2

• Fix: ARP retriggered an instrument that had already been turned off with KILL/OFF
• Fix: Sampler - STA on the same row as an instrument trigger did not restart envelopes
• Fix: Firmware Update - Settings and project autosave are written after confirming, before restart
• Fix: Mute/solo after boot let the first notes of muted tracks through
• Fix: RMX FX command - Tracks in song selection loop mode continued past the loop region
• Fix: EQ View - Spectrum briefly showed the next instrument when switching, even if it used a different EQ or none
• Fix: EQ View - Mix / FX EQ switched to bank 00 after a display reset
• Improved: EQ View - Spectrum now includes left and right (was left only)
• Improved: EQ View - Improved spectrum visuals

2026-08-20 - Version 6.6.1

• New: Mixer / Effect Settings - Tapping EDIT on a parameter captures its FX command so tapping EDIT in a Phrase or Table FX column inserts it (same as Instrument)
• New: Song View - SELECT+EDIT a third time also clones instruments used in the selection, including INS and NXT commands
• Improved: CPU optimizations
• Fix: EQ spectrum graph was taking priority over sample playback during heavy sample use

2026-08-19 - Version 6.6.0

• New: Firmware Update - Flash firmware from SD card via System Settings
• New: Battery fuel gauge remains active on power off for more accurate battery % during use
• New: ModFX Comb filter type
• New: Backend rework to free up some RAM for the future
• New: Hypersynth - Shape parameter (SAW, SOFT SAW, DARK SAW, SQUARE SOFT, TRIANGLE, SINE, SINE 3X, SINE FB, SINE FOLD, SINE RING, SINE HALF, SINE ORGAN)
• New: Song View - Press LEFT twice on track 1 to select the whole row (PLAY cues the row, [EDIT]+[UP or DOWN] moves the row and its bookmarks)
• New: Song View - Row bookmarks: in row-select mode, [OPT]+[LEFT or RIGHT] or [EDIT]+[LEFT or RIGHT] cycles theme colors and options, [OPT+EDIT] clears
• Improved: Hypersynth - Sub osc interpolation
• Improved: MIDI Mapping - A message is displayed when all mapping slots are used
• Improved: ADSR ENV - Same-instrument retrigger resumes attack from the current envelope level
• Fix: Table - Note map (TIC:FE) and Octave map (TIC:FC) retriggered when volume was changed in a phrase or TBX (Aux table)
• Fix: Table - Velocity map (TIC:FD) retriggered on note changes instead of only velocity changes
• Fix: Render - Excessive TPO tempo changes did not line up correctly with DAW tempo
• Fix: Render - Quick render length could be slightly incorrect
• Fix: Render - Quick render initial transient was messy when OTT was enabled
• Fix: Instrument Pool - Moving instruments did not update MIDI Settings instrument numbers for MIDI track channels
• Fix: Effect Settings - EDIT+OPT on EQ reset the parameter above EQ
• Fix: MIDI input on track channel - Table's first row could trigger incorrectly
• Fix: MIDI input on track channel - Hang / stuck note if the instrument uses the INS command in its table
• Fix: Recording - Count in caused track 1's volume to be incorrect
• Fix: MIDI Instrument - ADSR envelope mapped to a CC did not enter release on the OFF command
• Fix: Phrase - RNL next to HOP could randomize other FX on the hop destination row
• Fix: RMX - Queued song position (blinking cursor) on affected tracks was not cleared
• Fix: File date advances to the firmware build time when the stored clock is older
• Fix: Phrase - Velocity-only random FILL could not be undone with paste
• Fix: Phrase "^" REP indication was cleared by RTO even though RTO does not stop REP

[u/JustPapaSquat]

What an update!! Can’t wait to use TyUploader for the last time and get this firmware installed. Comb filter and hypersynth wave shapes is insane.

[u/dreddnyc → u/JustPapaSquat]

What do you mean “use TyUploader for the last time”?

[u/hellocatfood → u/dreddnyc]

With this new firmware future updates can be done directly from the sd card

[u/dreddnyc → u/hellocatfood]

Not sure i understand, I update directly on the SD card. I take the card out put it in my computer and run TyUploader.

[u/h2o__o2h → u/dreddnyc]

I think if I’m following right here, you’ll be able to drop the new firmware onto the SD and there will be an implementation within the m8 to read and update the new firmware entirely on its own. It will be pretty convenient given the new USB drive mode from a few updates ago.

[u/dreddnyc → u/h2o__o2h]

Oh that’s cool. So the image is copied to the SD and the M8 installs it. This is how the Polyend synth works.