Ok, so im having a little bit of trouble understand the op here.
You "accidentally" updated to 3.60.
How did you accidentally update, from what I know you would need to go back to the original firmware (OFW) and then update to 3.60.
And then did you accidentally go into system update and accidentally press update and accidentally sit there while it accidentally go through the loading bar.
Explain a bit more :mudkip: