Ill try to make this as simple as possible while still providing enough details...
My AVIC was working fine for the last year of ownership. This morning, worked fine, but after making a stop, the button LEDs weren't on and the screen would go blank after booting up for about 10-15 seconds. Tried restarting the car, resetting using the button, removing power, all of which haven't worked. Ive since attempted upgrading to firmware v2.008, but that apparently didn't go so well as now it's just stuck in the boot screen.
Ive updated the WinCE from version 2.006, but that hasn't helped. A friend with the same head unit said he had the same issue and used that to "fix" it, but either the upgrade to 2.008 made things worse or the WinCE isn't the issue.
If anyone has anything I can try, please let me know. Im open to anything at this point. My fear is having to send it in to Pioneer, shell out god knows how much cash to get it fixed, and hope things are fine afterward.