Pocket GammaWave (GW-1)
Trap ATL, UK Drill, Dark Trap, Rage Trap) · Web Studio — the open-source hardware & browser companion to the GammaWave desktop synthesizer.
- Custom firmware
- Stable
- Medium brick risk
Source codeWebsite: gammawaveaudio.com
This project hasn't been claimed by its maintainer yet, so its details come from the community. Is it yours? Claim it
Support the developers
Links from the project's GitHub. The money goes to them, not to Firmware Hero.
Pocket GammaWave (GW-1) v1.2.1-GW for M-VAVE FM-1: CLEAR PROJECT, a smooth random LFO, fewer clicks
An update to v1.2-GW. Projects, sounds and settings carry over.
- To flash your M-VAVE FM-1, download
felucca-1.2.1-GW.fwscbelow or use the Live Web Studio & USB Installer.
What's new
- SAVE > TOOLS > 7 CLEAR PROJ (#22). It frees the current project's sections A–D and empties its song. It asks first and can't be undone; the music playing stays. Until now a stored section could never be freed, so once A–D were taken the generator's SONG form had nowhere to write.
- NOISE, a smooth random LFO (#20). It's a new source in the modulation matrix (LFO > MOD, KNOB 2). Each track wanders on its own, a new value about every 46 ms with a smooth glide in between.
Fixed (taken from JIANT and Felucca, the firmware GW-1 is built on)
- Clicks under load. An audio block that ran late made the next one replay 2.9 ms of old audio. Now a late block is caught up at once.
- DRUM-X STEREO clicks and grit with IMAGE on and both cores running.
- CLOUD reverb:
- it no longer crackles when pushed hard;
- it no longer clicks with AIR up;
- SIZE at max no longer freezes silence from an empty start.
- The delay at its longest TIME with MOD up no longer leaks the dry signal into the echoes.
- LFO FREE: its FADE no longer comes back on every note.
- A BPM of 0 can no longer crash the tempo maths.
- 3 KB of main RAM freed for later features.
The full details are in the changelog.
Before you start
- How hard is it?
- EasyCopy a file or use a web page. No extra software.
- What you need
- A USB or MIDI cable
- Comfort with the command line
- A computer
- Can it break my device?
- Small chance of trouble, with a way to recover.
- Can I undo it?
- The project doesn't say. Assume you can't.
Did it work for you?
Did Pocket GammaWave (GW-1) v1.2.1-GW work on your M-VAVE FM-1?
No reports yet for v1.2.1-GW.
One-tap reports from owners. Bricked reports are checked before they count.
Compatibility
Devices: M-VAVE FM-1.
No compatibility information yet.
Getting started
From the project's README ("Installing on M-VAVE FM-1 hardware"):
Open the USB web installer in Chrome, Edge or Opera (it needs Web MIDI):
Connect the M-VAVE FM-1 with a USB data cable and switch it on.
Coming from another custom firmware (Felucca, baudgirl, etc.)? Click Return to official V15 first (which also backs up your flash), then click Install.
Coming from official V15, JIANT, or an earlier Pocket GammaWave build? Click Install directly. Don't unplug the cable until flashing completes.
Pocket GammaWave uses the FM-1's user sample flash (USR1–3) to store 8 multi-section songs and the 32-voice FM6 user bank. Back up any custom WAV samples from stock firmware before flashing.
You can also download the package from the Releases page (named felucca-.fwsc, e.g. felucca-1.1-GW.fwsc — the build tooling keeps Felucca's file name).
Risk and recovery
- Brick risk
- Medium
- Requires opening the device
- No
From the project's README ("Installing on M-VAVE FM-1 hardware"):
Open the USB web installer in Chrome, Edge or Opera (it needs Web MIDI):
Connect the M-VAVE FM-1 with a USB data cable and switch it on.
Coming from another custom firmware (Felucca, baudgirl, etc.)? Click Return to official V15 first (which also backs up your flash), then click Install.
Coming from official V15, JIANT, or an earlier Pocket GammaWave build? Click Install directly. Don't unplug the cable until flashing completes.
Pocket GammaWave uses the FM-1's user sample flash (USR1–3) to store 8 multi-section songs and the 32-voice FM6 user bank. Back up any custom WAV samples from stock firmware before flashing.
You can also download the package from the Releases page (named felucca-.fwsc, e.g. felucca-1.1-GW.fwsc — the build tooling keeps Felucca's file name).
Releases
| Version | Name | Released |
|---|---|---|
| v1.2.1-GW | Pocket GammaWave (GW-1) v1.2.1-GW — CLEAR PROJECT, smooth random LFO, fewer clicksLatest | 26 October 2026 |
| v1.2-GW | Pocket GammaWave (GW-1) v1.2-GW — Ambient & Keys | 25 October 2026 |
| v1.1.1-GW | Pocket GammaWave (GW-1) v1.1.1-GW — fixes from your issues | 25 October 2026 |
| v1.1-GW | Pocket GammaWave (GW-1) v1.1-GW — the songwriter, and a real trap snare | 24 October 2026 |
| v1.0-GW | Pocket GammaWave (GW-1) v1.0-GW — Solar Hearth, Spectrogram Filter, 4-Track Tape & 49-Genre Generator | 15 October 2026 |
Credits, license and support
- License
- GPL-3.0