B2 Install Favourite Apps - not working after Bangle.factoryReset();

Failed to load apps/screenshots.json is actually expected - it shouldn't cause any update errors.

Right - so actually I was mislead by the error ... missing files the problem is actually that you had files set as a favourite app, but that's not set as compatible with Bangle.js 2!

Just choose bangle.js 1 in the top left, deselect 'files' as a favourite, and you'll be fine. Of course maybe files works on Bangle.js 2 in which case we could tag it as being ok?