Not sure if anyone's reported this before, because the forum won't let me search for "bolero" - too common apparently!
Anyway, this morning all the graphics went AWOL from our Bolero head unit. Only text would appear, no icons, logos, button graphics etc. Several long push resets with the power button, which normally clears the Bolero's quite frequent glitches, did nothing to help. Had to struggle to find the factory reset option, which mercifully did the job, and for once didn't forget my Android Auto setup. Looked for a moment like it had done nothing either, but by the time it had decided to offer the setup wizard again, it seemed to have resolved.
I did ask at service in December whether there were any updates, and was told it was too new... Age should have nothing to do with it, given how buggy it is - and I gather it's a bit of a sticking point with VAG head units in general.
Faults and Technical chat for the Skoda Kamiq