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iPhone 4 restoring error (16)

I bought an iPhone 4 a few days ago and went to set it up as per usual. When I set it up, i did it from a back up like usual but from then on ive had nothing but problems. Firstly the set-up didnt work and got an error message that it could not be activated the phone. Tried it again, got same error. Then it ended up in recovery mode, tried to restore the phone, its get to the end of the recovery and get an error message "An unknown error occurred (16)" Entered the phone in DFU mode as well and tried same thing, still get same error message. Tried restoring from both a downloaded iOs and directly off the Apple server for both methods. Nothing seems to work. Anyone have any ideas as to what/where i should do next. Thanks.

iPhone 4, iOS 7

Posted on Sep 22, 2013 1:10 AM

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109 replies

Jan 8, 2015 5:31 AM in response to bilal8910

Well i also ended up on this thread having the same error 16 on a 4S 8.1.2


Didn't work:


trying another (windows) pc

other usb cable

using the combination home+on/off button trick (my restore didn't even get till 95%)

restoring with battery disconnected (resulted in error 21 instead of 16)


after also getting error 11 i disconnected (while phone off and battery disconnected) all the flex cables from the logic board execpt the 2 from the lcd and the dock connector cable. Reconnect the battery and restored again and that worked!! 1st try and the phone got restored!!

iPhone 4 restoring error (16)

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