Hexinverter Électronique Mutant Brain

Hexinverter Électronique discontinued
eurorack converter
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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 →opens in a new tab — hexinverter.net

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Firmware History

Changelogs summarised from the manufacturer's release notes.

4.0 2018-08-01
v4.0 (stable, August 2018): Stock shipping firmware. v4.2 (beta, 2018-09-10): Fixed gate triggering on wrong notes when MIDI notes share same channel. Fixed MTC (MIDI Time Code) and SPP (Song Position Pointer) message skipping issues. Beta reported stable; users encouraged to report issues.
Release notesopens in a new tab — hexinverter.net
Manufacturer page →opens in a new tab — hexinverter.net
Manual →opens in a new tab — ericasynths.lv