Les

FM-1 firmware · 0.26

PT/FM

A pocket tracker in the ProTracker tradition where FM, Juno-style, acid, chip and sampled instruments play side by side, with loops and a DJ mode.

Made by
hitosu
Released
October 28, 2026
Install
On the FM-1 Firmware Hub · source on GitHub
Scan
Reviewed by a person · Oct 31 What we checked
Last checked
October 31, 2026

What PT/FM does

  • Six instrument types play from the keys: DX7 FM, JUNO-106, TB-303, CHIP, sampler and FUSION.
  • The EDITOR writes patterns as a grid of up to 16 tracks and 128 rows, with four commands a cell.
  • SONGS plays your patterns in an order you choose, each song with its own tempo, swing and effects.
  • LOOPS records up to 16 layered loops of one length and makes the whole performance a new song.
  • Effects include GATE, FILTER, DRIVE, LO-FI, CHORUS, DELAY, REVERB, LIMITER and DUCK, plus sixteen punch-ins on the white keys.
  • DJ runs two songs on two decks in time, with a crossfader, filters, cue points, stops and LFO pads.
  • SAVE writes songs, patterns, instruments and settings into the FM-1's own memory, where they survive power-off.
  • Play it from a keyboard or computer over USB or the TRS MIDI IN jack, and sync with other gear.

Its modes

SONGS
You list your songs and arrange each one's order of patterns.
EDITOR
You write patterns on a grid of tracks and rows, with notes, instruments, volumes and commands.
INSTRUMENTS
You browse cartridges, try sounds on the keys and edit them.
PLAYBACK
You follow the playing pattern and perform, jumping positions and changing the song's speed and volume.
DJ
You mix two songs on two decks with a crossfader, filters, cue points and pads.
VISUAL
You watch the sound as scopes, waveform, spectrum and track meters.
STATUS
You check the version, help, performance figures and free storage.
SETTINGS
You set global options and run tools for your storage.
LOOPS
You stack live loops, mute and solo them from the keys.
FX
You set the effects, the punch-ins, the metronome and the mixer.

What Les checked

PT/FM 0.26Scanned October 31, 2026

What we checked for

  • The file matches the checksum the FM-1 Firmware Hub records for this version
  • It opens cleanly as an FM-1 firmware, nothing damaged
  • It doesn't show up on your computer as a keyboard, mouse or other input device
  • It doesn't show up as a USB drive or network adapter
  • Its text mentions no computer command tools, like PowerShell, Terminal or a download command

What we found

  • MIDI and audio, as expected
  • The file changed after this release came out, under the same version

StatusReviewed by a person

We found that the file changed after it came out. A person looked at it and accepted it: Kevin, hub card 2026-10-29 10:05 ET (173dfs1jg): Clear all four; evidence on production-draft-zzxq: author rebuild.

Les scans every firmware here whose file is public, and shows what it checked and what it found. A scan lowers the risk; it can't rule it out. This firmware is made by its author, not by Les or M-VAVE. Back up first, and install at your own risk. How Les scans firmware

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