How to Fix iPhone 6 iTunes Error 56

The customer mentioned that he failed to update iPhone 6 IOS system, it is in iTunes data cable mode when we get the phone. We are going to reflash it again by iTunes, when the progress bar reaches 80%, the iTunes reports unknown error 56, generally this error code means the fault is from camera power supply circuit and NFC.

First of all, we are going to measure the iPhone camera circuit, it is normal.

The issue of iPhone baseband CPU we can put aside, if iTunes reports unknown error -1, and then we need to repair iPhone baseband CPU part. But this iPhone can be used normally before flashing, so maybe the NFC module is damaged; we are going to remove the U5301_RF first.

Use QUICK 861DW hot air rework station to remove U5301_RF part, and measure the diode data for bottom pin circuit by multimeter, we found it is short circuit.

Connect the WUIXNJI Dongle to check iPhone schematic diagram on computer, we found this circuit is connect to NFC power supply, CPU, and two small capacitors.

Consider the NFC power supply first, put it under the 7-45X Trinocular Stereo Microscope, use hot air gun and tweezers to remove it quickly, there are two iPhone touch ICs around it.

Measure again after removing the NFC power supply part, it shows normal, so we replace the new IC.

Reassemble the iPhone 6 and flash again, it completes successfully.

More detailed cell phone repair tutorial, please contact on www.vipfixphone.com

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