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iPhone 6s Plus Update System error 4014 repair
Machine model:iPhone 6s Plus
Fault phenomenon: error 4014 reported by Update System
Maintenance process: This machine has been repaired elsewhere before.Update System is 4014 indeed. There are traces of soldering between Baseband and Baseband power supply on the main board.
iPhone 6s Plus Update System error 4014 repair Figure 1.
iPhone 6s Plus Update System error 4014 repair Figure 2.
After Reballing Baseband and Baseband power supply, the gray progress bar does not go after Update System Stuck on Apple logo comes out again. This phenomenon is basically Nand problem.The Nand VCC of each channel is normal. Replace a disassembled Nand directly.Update System can enter the activation interface and judge whether Nand is damaged.
iPhone 6s Plus Update System error 4014 repair Figure 3.
The machine was repaired after replacing Nand.
iPhone 6s Plus Update System error 4014 repair Figure4.
