Hermod+OS Beta | Squarp instruments

Fast firmware update

Updating Hermod+:

drag the "hermodplus.bin" file into the SD card (do not change the file name)
insert the SD card in Hermod+
power on Hermod+ while holding the main encoder and wait for the flashing procedure to complete.
check the version in SETTINGS > INFO: OS 3.1 BETA A
⚠️ Beta firmware: for testing purposes only. Back up your projects before updating, older firmware versions cannot open projects saved with this beta.

Every bug reports & suggestions must be sent here: squarp.net/contact

Hermod+OS Beta 3.1 BETA A
November 2026

New actions

uTime: on the STEP page, hold one or more step pads and click the encoder until uT is highlighted (NOTE, LENGTH, VELOCITY, uT). Turn the encoder to move the notes earlier or later, 1/96 of a quarter note per click, up to half a step either way. A chord keeps its shape.
After holding a step pad, the steps you add take its NOTE, LENGTH and VELOCITY, and now its uTime too: copy a note that sits slightly off the grid and the copies sit the same way.
On the STEP page, click the encoder and choose SIMPLIFY MODULATION, SIMPLIFY PITCHBEND or SIMPLIFY AFTERTOUCH to lighten the lane on screen and get automation memory back. Steps stay steps, curves stay curves.
When the automation memory gets full during REC, recording stops and AUTOMATION FULL / SIMPLIFY ? offers to lighten the lane you were recording.
On the BPM page, hold Y (>> FASTER) or X (<< SLOWER) to nudge the tempo while you hold it, to get back in phase with a drummer or a DJ. The BPM itself does not change.
STEP page menu: COPY PATTERN / PASTE PATTERN copy the current sequence of the active track. TRACK EDIT: COPY TRACK / PASTE TRACK copy all 16 sequences, the effects and the mod matrix. CLEAR TRACK now asks for confirmation.
COPY MODULATION on a MOD lane can now be pasted on any other MOD lane.
On the SEQ page, hold a sequence that is not playing to clear it: turn to YES and click while still holding the pad. Releasing the pad answers NO.

New settings

SETTINGS > SYNC INPUT > CLOCK SOURCE = MIDI AUTO: Hermod+ runs on its own clock until a MIDI port sends clock or START, follows that port, and takes over again when it goes silent.
SETTINGS > SYNC INPUT > EXT TRANSPORT: with CLOCK SOURCE = INTERNAL, choose the port allowed to send START / STOP while Hermod+ keeps its own tempo. With an external clock it reads CLOCK: the transport already comes from the clock port.
SETTINGS > SYNC INPUT > ASK SYNC ON CLOCK is now ON by default: when a port you do not follow starts sending clock, Hermod+ asks SYNC TO IT ?. Nothing changes unless you answer YES.
SETTINGS > REC SETTINGS > AUTO REC OFF = ON: recording stops by itself at the end of the pattern.
SETTINGS > MIDI THRU > THRU FILTER = CC ONLY: the thru only lets Control Changes through, so the notes a track already plays are not doubled.
SETTINGS > SYNC OUTPUT > RESET OUT MODE = END OF PAT TR1: a reset trig each time the pattern of track 1 loops, whatever its length.
SETTINGS > REC SETTINGS > SMART OVERDUB TIME now applies to notes as documented in the manual. The default value behaves as before.
MIDI tracks with an XP32: TRACK EDIT > >LAYOUT opens XP32 POLYPHONY. Several MIDI tracks share their XP32 rows to play chords: choose the number of voices, then POLY or PARAPHONIC, with FIRST FREE or ROUND ROBIN.

Modulation

Each LFO is now a source in the mod matrix (LFO1, LFO2...), listed between MOD 4 and CC 1: modulate any destination from an LFO, no cable needed.
Knob recordings take much less memory: a knob that does not move no longer stores a value at every tick.
Projects with many LFOs no longer slow down the screen and the pads.

Changes

A pad now shows and edits the notes within half a step around it: a note played or moved slightly early stays on its own pad.
MIDI out: two overlapping notes of the same pitch (echo, arpeggiator, long notes) no longer stack two NOTE ON. The second one closes the first.
CV outputs: VELOCITY and AFTERTOUCH go back to the bottom of their range, MOD and CC to 0 V (or the nearest edge of their range), when a project is loaded or created, and on RESET PATTERN, CLEAR TRACK and CLEAR SEQUENCE. PITCH and gates are not touched, nothing changes on STOP or mute.
TAP BPM follows a tempo change at once instead of averaging it with the previous taps.

Bug fixes

COPY TRACK did not copy the notes from one sequence to another.
CCs sent by an effect (LFO, ENV...) on the same number as the track's MIDI MOD input were swallowed.
A CV input used as clock was also read as modulation and sent out as a CC jumping between 0 and 127.
With an external clock, the envelope kept its last CV value on STOP.
Legato notes did not retrigger the envelope.
MOD steps were no longer shown in the piano roll when holding a pad.
Envelopes sent on a CC could flood the MIDI DIN output and make the MIDI clock jitter.
With HARD REC = ON, an empty MOD lane sent a rest CC during the whole recording.
A damaged project file could load wrong data instead of stopping.
COPY, PASTE and duplicate no longer pretend to succeed when the memory is full: they say why.
CLEAR TRACK now clears all 16 sequences.
PANIC during an envelope left the output stuck until the next note.
Pressing REC while editing a setting threw you out of the page.
The cursor could stay stuck on REC SETTINGS, and leaving the BPM page with PLAY could land in the settings.
The CPU value in SETTINGS > INFO is now accurate, on every page.