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m-flasher, image 1 from its README
Firmware

m-flasher

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m-flasher is custom firmware for the M-VAVE FM-1, by @jvitkauskas. Latest release v0.8.2 (November 2026), 38 stars on GitHub.

forM-VAVE FM-1·by@jvitkauskas

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M-Flasher-0.8.2-macos.dmg· 7.0 MB· +7 files

Custom license· jvitkauskas/m-flasher·downloads come from the creator’s GitHub releases

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32 commits and 10 releases in the last year
Activity · last 12 months

M-Flasher

Back up, restore and reinstall the firmware of an M-VAVE FM-1 (or its rebranded twin, the Fame MiniFM) or SMK-37 Pro / Elite over USB, and install m-bootloader. It talks to the chip's built-in USB download mode, so it also works when the firmware on the unit is broken. For Windows, macOS and Linux.

Unofficial: not affiliated with M-VAVE or JieLi. It saves a backup before it writes anything and checks every write, but use it at your own risk.

M-Flasher connected to an FM-1 in download mode, with m-bootloader installed: the device panel, the operations and the flash map

What it does

  • Back up the whole flash, and restore a backup.
  • Install firmware from M-VAVE's .fwsc packages, as downloaded.
  • Install m-bootloader, or put the stock one back.
  • A flash map shows what each part of the flash holds and, before a write, exactly what will change.
  • Checks the package is for this model, writes only what changes, and verifies everything written: see Safety.
  • A command line as well as the window.

Getting started

  1. Download the package for your system from the releases and follow its short instructions. The apps are not signed, so the first start needs one extra confirmation.
  2. Put the unit in download mode and connect it with a USB data cable:
    • with the unit running normally (M-VAVE's firmware or Felucca), just connect it: M-Flasher finds it on USB MIDI and its DOWNLOAD MODE button switches it over;
    • with m-bootloader: hold REC (SMK-37: SEQ REC) while switching it on;
    • with Felucca, SLOOP or Snoop37 running: hold OCT- and OCT+ for 5 s.
  3. M-Flasher finds the unit and shows what is on it. Start with a backup.

A unit with the stock bootloader and stock firmware cannot enter download mode from its keys, but DOWNLOAD MODE works on it. Installing m-bootloader adds the keys and a recovery menu for when the firmware does not start.

More

  • Using M-Flasher: each system, download mode, the actions, the command line
  • Safety: what is checked before and after every write
  • How it works: the protocol, the source, building

Credits and license

MIT (LICENSE). Bundled files and their licenses: data/NOTICE.md and assets/README.md. The protocol follows jl-uboot-tool by kagaimiq, and the safety rules those of MvaveFM1Unbricker and FM-1 Transporter.