Out of nowhere my pi stopped booting. The red led lights up, they a long flash of the green led and then a cycle of 4 green blinks. HDMI screen shows nothing. I tried this with two different SD cards, the seconds one is brand new, flashed with vanilla "2013-09-25-wheezy-raspbian"
this page says that 4 blinks mean "start.elf not launched" and that "If start.elf won't launch, it may be corrupt." but the image I'm using seems fine. I've also tried replacing start.elf with the one from github with the same result.
Multimeter between tp1 and tp2 shows 4.91V
config.txt but nothing changed.
Have I bricked my pi? what else can I try?