We set it to “millions of colours” and now X won’t start. After the boot logo, we get the grey background with little X in the middle for about a second, then it blanks out and endlessly repeats this sequence.
I’ve reset it to factory defaults (with the battery and jumper trick) but this reset everything but the problem.
Does anyone know how to recover from this? I’m sure I’ve tried every hotkey known to try to get to a console but if anybody knows the answer, I’d be grateful.