FM-1 Firmware Patcher
Python script that patches your own copy of stock V15: operator detune matched to Dexed, aftertouch vibrato removed, scope colour changed. The patched file must not be shared.
Brick risk. Flashing this carries a known, documented risk of damaging the device.
- Distribution
- Patches a stock file you supply
- Requires stock
- V15 (downgrade to V14 first to install the patched file)
- License notes
- Covers the patcher script only; M-VAVE firmware stays under M-VAVE copyright.
- Source
- github.com https://github.com/czietz/fm1-firmware-patcher
- patch
- fm
Description
The device still reports V15, so M-UPGRADE treats the patched file as already installed. Downgrade to V14 with M-VAVE's tone updater first, then install the patched file; the same steps put V15 back. Also changes the oscilloscope to dark blue and the FX cursor to green as a visible marker.
Install notes
python patch_firmware.py FM-1.fwsc FM-1-fixed.fwsc, then downgrade to V14 with M-VAVE's tone firmware update utility and install the result with M-UPGRADE. Author reports it stable and the changes localized, but flashing in general carries risk.
Version history
| Version | Date | Notes |
|---|---|---|
| main | 2026-09-28 | No tagged releases; date is the last commit. |