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原帖由: naru mol ,

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Well, I think you got to change your NAND GATE chip on the logic board. 4013 Error occurs when there is a communication flaw with CPU.

Remove the NAND GATE chip safely.

Check the NAND chip. If it's fallacious, Replace with a new NAND Chip.

Solder the NAND chip and with the logic board again.

Then connect your iPhone to the PC, and restore iTunes.

Hope it helps. :)

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