Endorphin.es Evil Pet firmware

Endorphin.es active Device launched 2025

effects

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Latest firmware

1.63

released 5 Sep 2026

Download firmware from endorphin.es

Updater: See the update steps below
Manual: User manual

What's new in 1.63

- Improved expression control: moving an assigned knob now takes priority over the expression pedal. - PLAY and RECORD can now be triggered by LFO 1–3, including their envelope followers. Bipolar PLAY/RECORD enable thresholds for audio-triggered and inverted modulation - Added MIDI Velocity as a modulation source alongside MIDI Pressure - Fixed anti-aliasing during reverse playback - Fixed interpolation issues in recordings longer than 175 seconds - Fixed rare freezes and unexpected noise generation.

Last checked 26 Oct 2026

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Release history

1.635 Sep 2026
1.4227 Mar 2026

All 2 releases ↓

Endorphin.es Evil Pet manual & official pages

Endorphin.es Evil Pet user manualopens in a new tab — docs.google.com
Endorphin.es Evil Pet on endorphin.esopens in a new tab — endorphin.es
Download Endorphin.es Evil Pet firmware from Endorphin.esopens in a new tab — endorphin.es

How to update the Endorphin.es Evil Pet

Download the firmware ZIP from endorphines.info/updates and unzip it. The archive contains several .fw files; use only the newest one. There is no need to power off the Evil Pet: remove its microSD card and insert it into your computer. Copy the .fw file to the root of the card without renaming it, then safely eject the card. Reinsert the card into the Evil Pet; the screen shows an update prompt. Select YES with the encoder and click to confirm. Press any key and the unit restarts with the new firmware.

Just for reference. For complete and up-to-date instructions, always refer to the manufacturer's official firmware page.