GR-1 Firmware 2.6.1 - Release date: 14 Jan 2022

Bug fixes:

- Nasty instabilities in multitimbral MIDI.
- Bogus monitor level range.

Known issues:

- Clicks in distortion FX (similar to snare instrument pick up noise) when multiple voices triggering/releasing..
- No visual feedback on a bunch of CC's.
- Freeze on first USB plug after firmware update (a very old one).