Fart Machine One

Effect values remain visible under the cartoon. Restarting restores 15% reverb, no delay, 240 ms delay time, 25% feedback and 120 BPM.

SAVE does not save anything. There is no preset selection, step-edit page, separate pattern slot or song mode.

There is no MIDI note output implemented by the playback engine. USB also carries identity, install and recovery traffic.

The playing and recording lamps do not flash a beat or show sequencer positions. A recorded playback hit updates the cartoon and sound caption just like a live hit.

In Safe Mode, the screen’s web-installer direction is inherited. Use the Python tool from the matching release instead: with USB connected and its installer dependencies ready, run python tools/fm1_install.py fart-machine-one.fwsc from the release folder. The retained browser page is for FoMni; this map does not establish a Fart browser recovery route.

Calibration does not report whether the flash write succeeded; a newly learned map can work for the current session even if it was not saved. The startup splash says FMO. A new retained crash can show a restart notice for about 2.5 seconds. A fault screen shows FMO CRASH on red and restarts after about four seconds. Recovery entry briefly shows UBOOT or UBOOT (USB); screens inside the proprietary chip updater are outside this map. If safe mode also repeatedly fails, four failed starts send the unit to the chip updater.

The loop, tempo and effect settings live only while the firmware runs; power-off, a restart or installing another version loses them, and SAVE does not keep them.

The only saved user object is hardware calibration. Completing every prompt replaces its saved control map immediately; timeout writes nothing. No musical page, autosave or shutdown save exists.

There is no loop, effects or calibration export or restore tool in this release; record the sound over USB audio or the audio output before restarting if you want to keep a performance, and note your tempo and effect values separately.

• Back up first. There is no loop, effects or calibration export or restore tool in this release; record the sound over USB audio or the audio output before restarting if you want to keep a performance, and note your tempo and effect values separately.

Fart does not read or save FoMni’s stored setup, so it leaves that setup untouched in ordinary use; it can read FoMni’s saved calibration and rewrites the shared calibration only if you complete calibration.

Installing this release writes the program and clears sectors recognized as pending update records. A startup that finds data in either checked region erases the whole update area without asking, including before Safe Mode, and can destroy another firmware’s saved work. Fart checks two small regions in the area used to stage updates; if either is not blank, it erases that entire area without checking whose data is there. An installer session started from Fart erases the same area even when the update fails or is refused. Ordinary playing, effect changes, SAVE, a loop clear and power-off do not write a musical setup. Calibration is saved only when you complete it. Completing hardware calibration can also replace ChoralRoot’s legacy sounds 1–16, kept for returning to ChoralRoot 0.21 or older.

See the switching advice in this section for the affected saved work. A pending X0X or Polly restore by itself does not trigger startup cleanup, but the information is erased if another occupied check region triggers cleanup or an installer session begins. Back up in the firmware you are leaving before switching.

This map establishes no earlier Fart release format; the RAM loop and effects cannot survive a version change, and whether a different version accepts the saved calibration needs that version’s source.

Back up in the firmware you are leaving. See the switching advice in this section.

• Back up in the firmware you are leaving first, with its own tool (above). Anything below marked at risk can be written over; whether an older saved copy survives depends on how often you saved, so do not count on it.
• What installing Fart Machine One does to the firmware you had before.
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  install (supplied update loader): For each program sector, skip equal bytes or erase, write and verify the incoming sector; flash head below 0x4000 is not written. Saved musical data above the program range is not part of this program pass (valid package and matching chip encryption key). install (supplied loader record cleanup): After installation, clear only valid update-record sectors. Ordinary saved projects, sounds and samples are not update records (After an install, erase only a 4 KiB sector whose last 256 bytes hold a valid update record (marker 0x5441 at +6 and a matching nonzero CRC16 over bytes 2..79): in practice the family staging-record sector 0xE4000 and, on a first install from stock, stock record sector 0xE8000. Saved music does not hold that record. This loader does not skip 0x97000-0xDFFFF). every application start, including Safe Mode: At each application start, including before Safe Mode, if any byte in E0000..E0003 or E4F00..E4F07 is not FF, erase all five sectors E0000..E4FFF. Requires the expected JEDEC flash ID. Neither ownership nor valid staged-loader structure is checked. Other occupied bytes alone do not trigger cleanup (one of the update staging probes is not blank). first start and ordinary play: No project or effects flash read or save: project_load only fills effect defaults, om_init creates an empty RAM loop at 120 BPM, and the UI has no save handler. panel_init only reads calibration or keeps RAM/defaults. No settings migration or first-start setup save (all ordinary starts; calibration only writes if owner completes it). update request while Fart is running: Receive an installer upgrade request. Accepted package staging erases all five sectors, writes incoming loader body, checks its CRC and readback, then commits its JLFS header. After the host success reply, write and read-check the resume record and reset. A failed or refused OTA session calls ota_unstage and erases all five sectors even when validation failed before staging began; there is no device-side question (installer upgrade request received in normal play or Safe Mode). completed power-on calibration: Writes only one 4-KiB calibration copy according to the A/B rule; does not erase both sectors at once. Timeouts restore prior RAM map without a write. Save failure is not reported by the calibration UI (all 14 buttons and seven encoders have been learned). optional Mac rescue tool restoring stock V15: After a raw whole-flash dump, rewrites only program sectors different from hash-approved stock V15, high to low, verifies final whole-flash read against stock image plus the old tail, then restarts. Differences in the protected head abort before writes. This installs stock; it does not restore the raw dump or write the saved-data tail (--write supplied; this bypasses the --ask callback even if both flags are supplied). optional Mac rescue tool restoring stock V15: After a raw whole-flash dump, rewrites only program sectors different from hash-approved stock V15, high to low, verifies final whole-flash read against stock image plus the old tail, then restarts. Differences in the protected head abort before writes. This installs stock; it does not restore the raw dump or write the saved-data tail (--ask supplied without --write and owner types yes after backup and checks).

  • Stock V15: Possibly at risk: stock settings (and possibly patterns). Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate. At start-up, Fart Machine One erases the space where firmware updates are prepared if a checked spot there holds data. This can erase stock data in that space. The exact locations of stock saved data are only reported.
  • Baud Girl FM-1+VA: Possibly at risk: Baud Girl presets (128); Baud Girl patterns (16, with locks). Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate. At start-up, Fart Machine One erases the space where firmware updates are prepared if a checked spot there holds data. This can erase Baud Girl’s saved work if it sits in that space, including the checked spots. Exact saved-data locations are unknown.
  • Felucca: At risk when you act: user presets 1-16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • SLOOP: At risk when you act: user sounds U01-U16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • X0X: At risk when you act: X0X button calibration. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • JIANT: At risk when you act: user sounds U01-U16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • Melodee: At risk when you act: shared user presets U001-U018. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • FoMni: Carried over: FoMni button calibration. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • AMB-1: Carried over: AMB-1 panel calibration. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • ChoralRoot: Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • GHOULBOX: At risk when you act: user sounds 1–16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • M-VAVE FM-1 Open: At risk by itself, under a condition: Open shared sample audio. At risk when you act: Open USER project 1; Open USER project 2; Open USER project 3; Open USER project 4; Open USER project 5; Open USER project 6; Open USER project 7; Open USER project 8; Open USER project 9; Open USER project 10; Open USER project 11; Open USER project 12; Open USER project 13; Open USER project 14; Open USER project 15; Open USER project 16; Open device preferences. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate. Installing replaces Open’s sixteen USER projects, preferences and the information needed to read its sample bank, including the start of its sample storage. Export projects and the device sample bank before leaving Open. The required return through stock firmware has other unchecked data risks. At start-up, Fart Machine One erases the space where firmware updates are prepared if a checked spot there holds data. This can erase Open sample audio if the bank reaches that far. Export the device sample bank before leaving Open.
  • FM-106: Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • Hortator: Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • OberVave: Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • Polly: Carried over: Polly button and encoder calibration. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • Skiff: At risk when you act: user sound bank 1. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • sloopDX: At risk when you act: user presets 1–16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • Rainbow Mode: At risk when you act: user sounds U01–U16, names and sixteen-step patterns without automation. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • DUELL beta: At risk when you act: saved patches. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • FiMba-1 beta: Carried over: FiMba-1 beta panel calibration. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • MAKU: At risk when you act: inherited user preset bank 1. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • fm1-chord: At risk when you act: user sounds 1-16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • SLOOP DX7 Banks: At risk when you act: user sounds 1–16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • FuMi-1: Carried over: FuMi-1 button and encoder calibration. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • Jangada: At risk when you act: user sounds U01-U16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • WaveLoop FM-1: At risk when you act: user sounds 1–16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • ORBIT: At risk when you act: USER sounds U01-U16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • SLOOP Floyd FM: At risk when you act: user sounds U01–U16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • winampFM Synth: At risk when you act: user sounds 1-16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • Bubba Machine (beta): At risk when you act: screen language pack; system preferences and last pattern. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • Felucca [Salt]: At risk when you act: user sounds U01-U16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • PIGEON: At risk when you act: shared song and drum sample bank; older user preset bank 1. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate. If your PIGEON sample bank reaches the storage that installing Fart Machine One writes over, PIGEON can no longer read any of the bank, either song or the kit. Export the PIGEON session and audio bank before switching.
  • FM1 Move: At risk when you act: user sounds U01–U16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • FM1 Quest: At risk when you act: user sounds U01–U16. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
  • Groove OS: Possibly at risk: Groove project slot 1; Groove project slot 2; Groove project slot 3; Groove resume autosave; Groove sound bank A; Groove sound bank B; Groove sound bank C; Groove sound bank D; Groove custom drum sounds and kits; Groove device preferences; Groove crash reports. Where Groove OS saves data and which firmware can read it are not public. Back up its projects and your own sounds separately before switching. It is not known whether they survive this switch. Fart Machine One does not import or save a music setup or loop. SAVE does nothing. Its recorded loop, tempo and effect choices last only while it stays on. Calibration is separate.
• What the next firmware does to Fart Machine One's data.
  • Stock V15: Possibly at risk: learned button and encoder calibration.
  • Baud Girl FM-1+VA: Possibly at risk: learned button and encoder calibration.
  • Felucca: At risk when you act: learned button and encoder calibration.
  • SLOOP: At risk when you act: learned button and encoder calibration.
  • X0X: At risk when you act: learned button and encoder calibration.
  • JIANT: At risk when you act: learned button and encoder calibration.
  • Melodee: At risk by itself, under a condition: learned button and encoder calibration.
  • FoMni: Carried over: learned button and encoder calibration.
  • AMB-1: Carried over: learned button and encoder calibration. The saved button and encoder mapping carries over. This does not import saved pieces, songs, clips or sound choices.
  • ChoralRoot: At risk when you act: learned button and encoder calibration.
  • GHOULBOX: At risk when you act: learned button and encoder calibration.
  • M-VAVE FM-1 Open: At risk when you act: learned button and encoder calibration.
  • FM-106: FM-106 Beta4 does not save edited user sounds, even when it says the save worked. Export them before turning off the FM-1 or changing firmware again.
  • Hortator: Nothing shared.
  • OberVave: Nothing shared.
  • Polly: Carried over: learned button and encoder calibration. The saved button and encoder mapping carries over. This does not import saved pieces, songs, clips or sound choices.
  • Skiff: At risk when you act: learned button and encoder calibration.
  • sloopDX: At risk when you act: learned button and encoder calibration.
  • Rainbow Mode: At risk when you act: learned button and encoder calibration.
  • DUELL beta: At risk when you act: learned button and encoder calibration. The installer starts with its erase option selected for this firmware change. Clear it before installing to avoid this extra erase.
  • FiMba-1 beta: Carried over: learned button and encoder calibration.
  • MAKU: Nothing shared.
  • fm1-chord: At risk when you act: learned button and encoder calibration.
  • SLOOP DX7 Banks: At risk when you act: learned button and encoder calibration.
  • FuMi-1: Carried over: learned button and encoder calibration.
  • Jangada: At risk when you act: learned button and encoder calibration.
  • WaveLoop FM-1: At risk when you act: learned button and encoder calibration.
  • ORBIT: At risk when you act: learned button and encoder calibration.
  • SLOOP Floyd FM: At risk when you act: learned button and encoder calibration.
  • winampFM Synth: At risk when you act: learned button and encoder calibration.
  • Bubba Machine (beta): At risk by itself: learned button and encoder calibration.
  • Felucca [Salt]: At risk when you act: learned button and encoder calibration.
  • PIGEON: At risk when you act: learned button and encoder calibration.
  • FM1 Move: At risk when you act: learned button and encoder calibration.
  • FM1 Quest: At risk when you act: learned button and encoder calibration.
  • Groove OS: Possibly at risk: learned button and encoder calibration. The official route first puts V15 back, then installs Groove OS. Treat this firmware’s saved work as lost and back it up with its own tools before starting. Groove OS’s project saves, autosave, preferences, sample uploads and extra installed pages can also replace leftover work; nobody has published which parts of storage they use. A sound missing from PRESETS may still occupy storage, and do not count on Groove OS’s own backups to keep it.
• Who reads whose data. Other firmwares reading Fart Machine One's data: FoMni reads and uses Fart Machine One's learned button and encoder calibration; FuMi-1 reads and uses Fart Machine One's learned button and encoder calibration; FiMba-1 beta reads and uses Fart Machine One's learned button and encoder calibration; AMB-1 reads and uses Fart Machine One's learned button and encoder calibration; Polly reads and uses Fart Machine One's learned button and encoder calibration. What Fart Machine One reads of other firmwares' data: Fart Machine One reads and uses FoMni's FoMni button calibration; Fart Machine One reads and uses AMB-1's AMB-1 panel calibration; Fart Machine One reads and uses Polly's Polly button and encoder calibration; Fart Machine One reads and uses FiMba-1 beta's FiMba-1 beta panel calibration; Fart Machine One reads and uses FuMi-1's FuMi-1 button and encoder calibration. Everything else of another firmware's looks empty or foreign to the reader.
• Every way each write can happen, for all mapped firmwares: the flash atlas's table.

The Safe Mode screen directs you to a web installer, while the install guide uses the release’s Python tool and says no separate browser installer is necessary. Safe Mode accepts that Python tool over USB; use the reinstall command above. The browser page retained in this tree is FoMni-branded.

The current README’s musical controls agree with the source. The retained FoMni guide describes a different instrument: its chord pages, modifier keys and autosave do not apply here. The Fart README mentions calibration and recovery without listing their full gestures.

The map does not claim that the named FoMni base commit is the supplied v0.4 release.

Mapped from adamcharleswilsonmusic-code/Fart-Machine-One at V1.0.0 (784347a), 2026-10-17. Each control’s source is pinned in [fart.json](fart.json). An independent checker found zero errors in round 3 (2026-10-17). Code: GPL-3.0-only, by adamcharleswilsonmusic-code (credited as Adam), with retained FoMni and Felucca platform credits. Bundled AC79 SDK files use Apache-2.0. The eleven recordings use separate terms; the release’s notices do not establish their licences or permission to redistribute as verified. This guide uses its own wording and contains no copied tables or artwork. It is independent of the firmware author and M-VAVE.