I managed to corrupt the flash on my Pixl by pulling the power during a save (got too careless/impatient). I've managed to connect with NRF Toolbox and update the firmware, so DFU works fine. The Pixl boots and shows the Pixl.js v2.01 screen with the MAC and then nothing. The device is not advertised after booting.
Is there any way to wipe the flash or otherwise recover the situation?