M-VAVE FM-1 firmware
CTL-1
Turns the unit into a MIDI controller with its own GM sounds. by Charles Vestal

About
CTL-1 makes the FM-1 a MIDI controller for other instruments, with a set of General MIDI sounds of its own.
Compatibility
- M-VAVE FM-1Declared by the author · latest v0.9 · needs stock V15
Member “works on my unit” reports per release come with the community layer.
Latest release upstream
CTL-1 1.0 · v1.0 · 17 Oct 2026 · 4 releases listed
- ctl-1.0.fwsc · 596 KBSHA-256 fd9df8eac1d37a1bb296842728057b42bb5e666f4b0112ece01f5f179cd82f75
- ctl-usb-1.0.fwsc · 596 KBSHA-256 2a14a4fce414cf7ab8f5b19e493c8ecc5a07c7ba30498c5f722e7be5de52522d
Synced from the author’s repository on 29 Oct 2026. Files stay with the author; Maru does not host them.
Install and safety
Untested. No compatibility reports yet. Maru has not tested it on hardware.
Maru offers its own install only for open-source releases with a complete install record, after its installer has completed a full install and restore on a physical M-VAVE FM-1.
- Put the unit on stock V15 first, and keep your own copy of the stock file from M-VAVE’s downloads so you can go back.
- Back up your presets with the current firmware’s own export before installing.
- Rescue: none documented for this firmware.
- If something goes wrong, follow the recovery ladder.