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Original post by: jessabethany ,


Error 4013 usually points to corrupt NAND, and it sounds like you had a failure of one of the two backlight circuits before this happened.  My guess would be that you may have had corruption of one of the i2c main CPU communication lines from the backlight driver that lead to data corruption on the flash memory NAND chip.

Apple can't help you, and common software troubleshooting will not help either since this is a hardware defect.

The flash memory chip can be reformatted, but it requires desoldering the chip from the board and running through a formatting machine, reballing and putting back on the board.  That's a major repair and when combined with a backlight fault your best option might be to replace the phone at Apple for $349 out of warranty swap