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My son changed his password today on his 3GS (password lock) and can't remember it. It plugged his phone into Itune to do a backup (I right clicked under device) - it took about 10 minutes saying it was restoring but then got a message saying back unsuccessful/corrupt. Isn't there an easy way to void the password lock?
If that does not work then you will have to go to recovery mode in the following article
iOS: Unable to update or restore

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