The iPhone 7 Plus accidentally fell into water while in the normal use, even we pick it up and dry it quickly, it still has many problems, such as iTunes error 56.
When we connect iPhone 7 Plus to computer with iPhone lightning cable, and the opne the iTunes on PC, we are going to flash iPhone by iTunes. It started smoothly, but when the flash process bar runs
to two-thirds, it stop runs and the iTunes reports unknown error 56.
As we know, iTunes error 56 mostly is caused by iPhone baseband circuit and NFC. Now, we need to find out the reason, and then we can fix it.
Use phone opening tools to disassemble the iPhone, take out the iPhone motherboard to check , no obvious scar.
Measure the iPhone baseband circuit part, no problems was found. Now, put iPhone motherboard under the Phone Repair 7-45X Trinocular Stereo Microscope to observe, finding that the NFCSW_RF power supply tube is seriously corroded.
Carefully handle the eroded pin well, and then solder it well by PPD 861D Plus hot air rework station.
Assemble the iPhone, and use iTunes flash it again, it works good, and final get into IOS.
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