Teenage Engineering EP-133 K.O. II
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Current Firmware
2.5.1
Update only via browser updater, no directly downloadable file.
Just for reference. For complete and up-to-date instructions, always refer to the manufacturer's official firmware page.
Firmware pageopens in a new tab — teenage.engineeringFirmware History
Changelogs summarised from the manufacturer's release notes.
2.5.1
2026-07-03
fix: crash when cropping long samples.
fix: GROUP+PAD shortcut broken in TEMPO.
fix: choppy USB audio when streaming from Android devices (e.g. Pixel 9).
Release notesopens in a new tab — teenage.engineering
2.0.5
2025-12-03
- improved audio stability to reduce glitches.
- restored SYNC OUT continuous clock output.
- fixed: bug fixes and performance improvements for EP SAMPLE TOOL.
- fixed: various UI quirks related to faders, sampling, and chopping.
- fixed: turned-off LEDs could sometimes glow dimly.
- fixed: various stability issues.
Release notesopens in a new tab — teenage.engineering
FAQ
What is the latest firmware for the Teenage Engineering EP-133 K.O. II?
The latest firmware for the Teenage Engineering EP-133 K.O. II is version 2.5.1, released on 2026-07-03. FW//RADAR checks the manufacturer's official sources for new releases.
Where can I download Teenage Engineering EP-133 K.O. II firmware?
Directly from Teenage Engineering's official firmware page — FW//RADAR links to the source and never hosts firmware files. Official firmware page →
Manufacturer page →opens in a new tab — teenage.engineering
Manual →opens in a new tab — teenage.engineering
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