Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White.

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Why wont my iPhone go from Recovery Mode to DFU Mode?


I have the error (21) come up when i try and restore my iPhone. I've read that i should just put it in DFU mode. I've tried the home and power button method 100% correctly but it wont go off the 'Connect to Itunes' screen.

Can anyone help please?

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1 Answer

Chosen Solution

Error 21 is a battery issue dfu mode will not help

iPhone needs a new battery

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