M-VAVE FM-1 firmware

X0X

303, 808 and 909 style groovebox playing all parts at once. by Charles Vestal

X0X preview from its author
Preview by charlesvestal

About

X0X is a groovebox in the spirit of ReBirth: two acid bass lines with a pattern generator, two drum machines and a breakbeat player, with shared reverb and tape delay sends.

The author publishes an installer, a manual and a browser emulator.

GrooveboxDrums

Compatibility

  • M-VAVE FM-1Declared by the author · latest v1.0.6 · needs stock V15

Member “works on my unit” reports per release come with the community layer.

Latest release upstream

X0X 1.1.0 · v1.1.0 · 15 Oct 2026 · 10 releases listed

  • x0x-1.1.0.fwsc · 595 KBSHA-256 a0c29deb930c65f1d40b5691b7d673f861418b438b7e65027cb9c671e6f44f5b

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.

Install with the author’s installerTry in browser (author’s emulator)

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.
  • The author's installer can also put M-VAVE's firmware back.