My 720p ATV was bricked. Just ran the update via wifi and the light on the front flashed continually afterwards. Have yet to find a micro-USB cable to try and restore.
I find it strange that some people are questioning this is an issue because it didn't happen to them.
I find it strange that some people are questioning this is an issue because it didn't happen to them.
TV to have the HDMI unplugged during the upgrade. Did it again, initially got the flashing light but as per the instructions pulled the power plug and restarted. Presto it was OK. I usually hate reading instructions, but this time it helped to RTFI.