Ported down from a 900-particle, dual-core donor to 130 particles, single core: the interaction surface changed (fixed gravity, a touch stir), so this is verified by invariants, not pixel identity.
No install needed: copy the downloaded file onto the RP2350 BOOTSEL drive once it appears.
Only needed for a bricked board, or for firmware older than the USB reset interface. Otherwise the flasher reboots the board into BOOTSEL itself.
Unplug USB. Hold PWR for at least 12 seconds, until the screen goes black (replugging alone does not reset the board: the PMIC keeps the rails up). Then hold BOOT while plugging the USB cable back in.
The board can answer for itself. This port is verified by behaviour rather than by pixel identity, so this replays its own trace over the board's devlink port and puts the frames it captures through this bundle's own invariants - the same checks, the same thresholds, the same file the verifier runs.
no board has confirmed this yet
Needs the board running this firmware, and Chrome or Edge on desktop. Nothing about you is sent: the result carries the app, the pack, the firmware's own sha256, the kind of check, the verdict and what each check measured.