UNOFFICIAL FIRMWARENOT FROM MUTABLE INSTRUMENTS · COMMUNITY BUILDS
Community developers are writing their own custom firmware, also called alternative firmware, for the Marbles. This is a selection, not every fork or experiment: we list the projects with a working build and a real following, and check them every day. FW Radar doesn’t host these files and doesn’t send alerts for their versions: each link opens the developer’s page.
2 PROJECTS · LAST CHECKED 25 OCT 2026
Get an email when new custom firmware for the Marbles is found
01STABLE
Marbles Resurrection
by ukyzky
Adds a chord mode, adjustable loop start and length, longer Deja Vu loops and quantizer scale and root under CV, and lets several CV inputs take new jobs. A newer preview built on official 1.3 so far only adds the hidden Markov mode for T.
v11.3 is based on firmware 1.2; the 1.3-based build (pre-release) only adds the Markov mode. Install by playing the .wav into the module; the official .wav takes you back.
Adds a Grids-style drum pattern generator to the T side of Marbles, with pattern banks, fills and accents, plus new X modes such as round robin, envelope and Acid X.
Mutable Instruments (closed 2022) does not support alternate firmware. Install by playing the .wav into the module; to go back, install the official .wav the same way.
READ THIS FIRSTAt your own risk, and it may void your warranty. Read the developer’s install notes, back up your presets, and make sure you know how to go back: official 1.3 and how to install it →
Running one of these?Mark it in your rig: the Marbles won’t show as out of date, and you still hear about official updates.
An alert the day a new Marbles firmware ships, by email, Telegram or push
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The Mutable Instruments Marbles is no longer made, but Mutable Instruments can still ship firmware for it and we keep checking the official download page. One message per release. No spam, no newsletter.
It’s written by independent developers, not by Mutable Instruments. Some projects are stable, others are early betas: read each developer’s notes before you flash.
We pick the ones worth trying: a build you can install and a real following, from GitHub stars and downloads or from the community. Forks that only rename a project or add a few presets stay out, and brand-new projects get a second look after their first week.
Does FW Radar track custom firmware versions?
We note the latest version each developer has published when we check the list, every day, but we don’t send alerts for it: alerts are only for official Mutable Instruments firmware.
