Hexinverter Électronique Mutant Brain

Hexinverter Électronique discontinued
eurorack converter

Firmware discontinued

The manufacturer has stopped releasing firmware updates for this device. Last known version: 4.0.

You can still add it to your rig to keep an inventory and track its used market price.

Hold button while powering on to enter update mode (top 2 LEDs light solidly). Send .syx file via MIDI with ~100ms buffer delays. Upload takes 1-2 minutes; alternating rapid LED blinks signal completion. Power cycle after update, then re-load SysEx patch. Note: Erica Synths reissue uses different hardware and firmware — not compatible.

Last firmware page →

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Firmware History

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Manufacturer page →
Manual →