How do I update the firmware?

Connect your KO II to a computer using the USB-C cable and visit teenage.engineering/apps/update in your web browser. Follow the on-screen instructions to complete the update.

Alternative method

You can also download the firmware file directly from teenage.engineering/downloads/ep-133 and follow the manual installation instructions provided there.

Important note

If you've recently formatted your device to fix errors (by holding SHIFT + ERASE during startup), always update the firmware afterward to ensure everything runs smoothly.