Firmware Hero
0

KIDBOY

A toddler toy firmware for the M-VAVE FM-1: a few big, obvious things to do, every press makes a sound, nothing can break.

  • Custom firmware
  • Alpha
  • Low brick risk

Source code

This project hasn't been claimed by its maintainer yet, so its details come from the community. Is it yours? Claim it

Latest release · 18 Oct 2026Kidboy 0.1

Kidboy 0.1 — the toddler firmware for the M-VAVE FM-1, as posted to r/MVaveFM1.

Download: kidboy-2e400c2.fwsc below (app package, identity FM-1_938, ~402 KB of a 581 KB app slot). Install it from a computer over USB with the Felucca installer — see INSTALL.md. Flashing Kidboy leaves ChordBoy's saved keys untouched (PERSISTENCE.md), and ChordBoy can be flashed back afterwards.

Built at commit 2e400c2 (same build as the Reddit video and the unit it was tested on).

Note: the boot splash always says KIDBOY 0.1 — it doesn't show the build's version.

Kidboy is GPL-3.0-only, built on Felucca 1.6.1 by Leo Kuroshita / Hügelton Instruments. Source is in this repo; build it yourself with ./tools/remote_build.sh.

Before you start

How hard is it?
EasyCopy a file or use a web page. No extra software.
What you need
  • Comfort with the command line
  • A computer
Can it break my device?
Very unlikely to break anything.
Can I undo it?
The project doesn't say. Assume you can't.
Get itOpens github.com

Did it work for you?

Did KIDBOY v0.1 work on your M-VAVE FM-1?

No reports yet for v0.1.

One-tap reports from owners. Bricked reports are checked before they count.

Compatibility

Devices: M-VAVE FM-1.

No compatibility information yet.

Risk and recovery

Brick risk
Low
Requires opening the device
No

Releases

VersionNameReleased
v0.1Kidboy 0.1Latest18 October 2026
All releases on GitHub ↗

Credits, license and support

License
GPL-3.0