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I will use some firmwares. The list will grow as I am going to use them, but I'm going to take the time.
At the moment I'm pretty content with the XOX firmware.
Installing new firmware
- Go to https://thefirmwarehub.com/, use the Chrome or Edge browser on a computer
- Start from (or go back to) official firmware V15 first, every time you install new firmware (bottom of page)
- Find a firmware, press the green "Play" button to test in browser
- read the firmware installation instructions, they're not all 100% stable
- press 'Install" and wait patiently, do not touch anything
- troubs? firmware rescue: switch on holding [OCT-] and connect to PC
- Bluetooth MIDI (BLE): most firmwares drop the BLE, because the Bt-stack just takes up too much of the limited memory space (around 600KB).
Lists of different firmwares
A curated directory and reference hub for the M-VAVE FM1 synthesizer.
https://github.com/aroum/fm1-custom-fw
Groups of firmwares
As of oct 28, 2026 there are 218 firmwares.
| Sound, Synthesizer & Groovebox Firmwares | - [69] Felucca Ecosystem (Multi-Engine Platform), - [31] SLOOP (Live groovebox ecosystem), - [ 5] FoMni (Chord harp branch), - [82] Standalone independent engines |
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| Modular Firmware Platforms & Builders | - [11] Platforms | |
| Games & Experiments | - [18] Firmwares | |
| Stock Firmware Patchers | - [2] Patchers |
Quick list
OMG I can't keep up.
| System | Engines | Tracks | ||
| Felucca Ecosystem |
(Multi-Engine Platform) | |||
| 1. | Felucca | 9 distinct sound engines including - ANALOG (virtual analog, 2 osc, PWM, resonant LPF) - DIGITAL (4-op FM, 8 algorithms, feedback) - PHASE (phase distortion), - LOFI (chiptune, 4-bit wave RAM), - SAMPLE (multisampled instruments + user slots), - VOICE (formant/vocal osc), - TRIO (3 osc with ring mod/sync), - WHEEL (tonewheel organ with drawbars & rotary speaker), and - GRAIN (granular textures). |
4 tracks (3 synth parts + 1 GM drum track), - 64-step sequencer per track with chords/ties/slides and live loop recording, - per-track SLICER (16-step tempo-synced gate/stutter), - effects (distortion, chorus, delay, reverb sends, master limiter), - scales & white-key quantization, and web editor. |
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| 2. | Felucca [Salt] | extended visual options | ||
| 3. | Melodee | - Prophet-5 Engine - Casio CZ-1 - FM6 & Microtonal Scales - |
1,024 recorded notes across 32 pattern banks | |
| 4. | ChoralRoot FM-1 | Telepathic Orchid / Monome-style chord performance instrument. Two-handed chord shaping |
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| 5. | X0X | Propellerhead ReBirth-inspired - Two monophonic TB-303 synthesizers (303A & 303B), - 11-voice TR-909 drum machine, - 11-voice TR-808 drum machine, - 1 breakbeat slice player running simultaneously. |
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| 6. | GHOULBOX 2.0 | Drone synth Cathedral-sized HALL reverb, worn-cassette TAPE / CRKL stage, dedicated hurdy-gurdy engine (GURDY with crank clicks and buzzing trompette), drone latching, historical/just temperaments, and 36+ dungeon sounds (crypt pads, monk choirs, lutes, organs) with an old-school RPG UI and skull boot screen. |
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| 7. | Jangada | Dark, industrial, Brazilian-accented groovebox firmware 10 sound engines |
4 Tracks | |
| 8. | REDACTED | Experimental dark, fractured lo-fi four-track groovebox firmware | 4 Tracks | |
| 9. | Hortator | - Plaits, - 808/909, - 2-op FM, - physical membrane models |
8 dedicated percussion tracks | |
| 10. | ||||