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error code 40

how do i solve an error code 40

iPhone 3GS, iOS 5.0.1

Posted on Dec 11, 2011 8:44 AM

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1 reply

Dec 11, 2011 8:52 AM in response to sharonfromwrexham

That error may indicate a hardware issue with your phone, but it is typically caused by out-of-date or incorrectly configured security software. So disable all of that stuff. Also attempt to restore while connected with a known-good 30-pin Dock Connector cable, computer, and network to isolate this issue to the device. TheMAC address being missing or the IMEI being the default value, (00 499901 064000 0), can also confirm a hardware issue with your phone.

error code 40

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