Stock firmware.

Flashed something you regret? Put it back. The bootloader lives in ROM, so a bad flash can't lock you out — it always lets you reflash.

Download knobster-stock.bin

stock firmware a43f086 · built 2026-06-11 · app region (DFU)

Recovery

1. Unplug the Knobster.
2. Hold SW1 and plug the USB-C cable back in. Keep holding for a second, then release.
3. It now shows up as STM32 BOOTLOADER (DFU).
4. Flash the stock build:

dfu-util -a 0 -s 0x08001000:leave -D knobster-stock.bin

No terminal handy? The configurator flashes the stock firmware straight from the browser — same protocol, with read-back verification, in Chrome or Edge.

It reboots into the stock firmware, knobs on CC 20–27, channel 1. Want to change it instead of resetting? That's the SDK.