I installed the official AppleTV 3.0 update and it rebooted to a blank screen. I then installed the aTVFlash 4.0 update and got the same results.
It then hit me that I use an external USB drive to store my iTunes data and that I failed to switch it back to the internal drive before I ran the updates. I’m assuming that this is the problem.
What am I left to do? A total wipe and reinstall? If so, then how?
This is exactly what I was worried about.
I too use an external drive for my iTunes library so not seeing any actual details about this in the upgrade options I have posted to get more details on the situation before upgrading.
My library is backed up on another external drive connected to my Mac and iTunes but I really don’t want to wipe out the ATV and then re-sync everything back over but that may be the only solution???
If for some reason you have failed to revert to the internal drive first or the power goes off during a restore, etc. then you will need to put the Apple TV into diagnostic mode to force a factory restore.
None of the data stored on the external drive will be affected by this (and you should definitely unplug the external drive first) and you should be able to safely switch back to the external storage method after updating everything.
To put the Apple TV in diagnostic mode, follow the instructions listed in the Apple KB Article #HT1560.