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Like the title says - fresh out of the box it was in the black-text-on-white that goes with the firmware update page.
Attempted to use the app loader, and it failed to find the bangle. Switched to firmware updates, and kept it plugged in, turned on, and while the firmware updater used - first nRF firmware update and then NRF connect, and neither of them threw any errors directly - both 'completed' the firmware update. Tried the web IDE, and the flasher there did something new.
It kicked over to the "BANK0 INVALID" error, and still failed to update.
Prior to this, it was caught in the loop of "check storage, no new fw, restarting... check storage[...]." Now, after the first (attempted) firmware update, it will print an "ERROR" after starting the flashing process.
Trying to figure out what to do next!
Espruino
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Final Additional note: It has had "BL 2v24" across the top at the start, which is presumably the existing firmware. But we never saw anything higher-level than that black-on-white screen since the unboxing.