After upgrade ipad from ios6 to ios7, I want to transfer some files from mac to ipad through itunes. After connecting ipad to mac and opening mac itunes, an error message show up: itunes could not connect to the ipad because the device timed out. I have never got this with ios6 but why it happens now in ios7? (itunes is all updated) Anyone knows how to solve this problem? Thanks for help. Update: found the solution: turn ipad off and start again.