INSTALL JAZZY.
Explore the unheard. Connect your FM-1, save your music and review the target before installing.
Already using JAZZY? Open the USB editor to back up your music → · Explore the browser workspace ↗
One install. Two Break loops ready.
JAZZY includes Break A / Amen and Break B / Think by default. Both are two bars at 160 BPM, mono 16 kHz / 12-bit. The official V15 recovery file is included and verified automatically.
Desktop Chrome or Edge · USB data cable · final device-write confirmation required.
A / Amen — The Winstons, “Amen, Brother”.
B / Think — Lyn Collins, “Think (About It)”.
Recording rights are separate from the firmware license. Rights-holder authorization for redistribution of these copies has not been obtained.
BREAK AUDIO SOURCES & RIGHTS →Back up your music and start from official V15 or V16. Keep the matching original recovery file. Use the source firmware’s documented official-recovery route if you are coming from another custom firmware. Save a backup with that firmware’s own editor first. A supported JAZZY or RHYTHMER build can export a musical backup here. V15 recovery can make custom music unreadable.
V15 / V16 · newer FM-1 flash support
Install directly from official V15, official V16, RHYTHMER or JAZZY after backup and review. V15 is included; for a unit running V16, select M-VAVE’s unmodified V16 FM-1.fwsc before continuing. Keep the matching original firmware for recovery. Other custom firmwares must use their own documented return-to-official route first.
V15 selected. Changing this selection never writes to the FM-1.
M-VAVE official V16 download → · Select the original firmware file ↓
The firmware accepts the original Puya 0x856014 and newer UC25HQ80 0xB36014. This page cannot read the chip ID through the current MIDI protocol; it does not identify hardware from its colour, logo or firmware name. Older installed firmware may still refuse update entry.
Recovery keeps the device’s boot-area match check. A V15/V16 mismatch is stopped rather than forced. Full hardware compatibility is not established by a successful browser check.
If installation stops, download the diagnostic report: it records the source, selected recovery, target SHA, browser, transfer phase and request counters. A failed final identity check may happen after the firmware has been written. If no MIDI loader is visible, this page cannot perform ROM/Transporter recovery.
Installer update: 20261112.2 · V15/V16 package verification and source routing based on JIANT’s current public installer (V10.7.17); refusal diagnostics cross-checked against Skiff 2.5.1. No audio or polyphony changes.
Firmware updates can erase music, presets or samples, leave the FM-1 in update mode or require hardware recovery. Testing of this build on physical devices is limited. Back up first and keep power and USB connected until the installer verifies the restart.
JAZZY is an independent community project with no affiliation, sponsorship or endorsement by M-VAVE. To the extent permitted by law, JAZZY is provided without warranty and its authors and contributors disclaim liability for device damage, malfunction and data loss. Statutory rights and liability that cannot be excluded still apply.
Recovery is already here.
The installer checks package size, SHA-256 and firmware identity. For JAZZY it also verifies both embedded Break banks. The recovery file is the unmodified official V15 image from M-VAVE’s FM1 Open repository.
Checking official V15…
What’s new in this build · Set up sidechain and Kick Link
Checking the JAZZY firmware…
Package sources and official V15 / V16 file selection
Pinned official source and hash · Apache-2.0 · Recovery attribution
V15 is included. For V16, select M-VAVE’s unmodified FM-1.fwsc; exact size, SHA-256 and package checks are required. Modified files are rejected.
One FM-1. A data cable.
Use desktop Chrome or Edge over HTTPS or localhost. Connect one FM-1 with a USB data cable, set it to USB Device mode, stop playback and close DAWs, other installers and USB MIDI editors. Install handles connection and inspection automatically. Use Connect & Inspect to check the device identity separately.
Not connected.
Keep the music first.
The installer reads projects, sounds and settings from compatible custom firmware and checks each archive object. Musical backups do not contain Break audio. Keep your original audio files separately and restore the archive with its source firmware’s editor. RHYTHMER drum-kit tracks may need a new sound assignment in JAZZY.
DOWNLOAD BACKUP ↓Inspect the device first.
Review the JAZZY installation.
One firmware transfer installs JAZZY and replaces Break slots A and B with the included Amen and Think loops. Save any custom loops separately before continuing.
Nothing has been written.
DOWNLOAD DIAGNOSTIC REPORT ↓If an update is interrupted.
Reconnect with stable power and inspect the FM-1 again. Use the same installer, browser and target package to resume a matching saved update. A dark FM-1 that does not appear over USB may need hardware recovery.
Official recovery verifies the selected V15 (FM-1_015) or V16 (FM-1_016) identity after restart. It does not import custom projects into stock firmware.
Installer sources · GPL-3.0 license · Break audio notice · Elixir / LXR-02 credits · Corresponding source ↓
RHYTHMER ↔ JAZZY / DIRECT UPDATE Both companion firmwares can update directly after the automatic backup and final review. No V15 detour is required. Firmware installation replaces Break A/B with the bundled loops; keep your own audio and .slot banks. Musical compatibility may differ between the two OSes.
RESTORED SINGLE-BREAK BASE / 20261112.1 — One Break track. HYDRA legato, LXR track ENV and zero default sends are included. Read release and rollback notes →