It there anyway to restore a nandroid backup after you manually update to 2.2. I did the power x thing then get the triangle and exclamation point. Takes me to this
Android system recovery <3e>
Use d-pad to highlight: center to select
reboot system now
wipe data/factory reset
wipe cache partition
wipe baseband data
Can i apply the 2.01 update.zip? to go back? I have 2.2 with the ninja in the app drawer. Not rooted though.