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オリジナル投稿者: Mikkel Øgendahl ,

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To my experience, error 9 is always NAND-error and that would be my best guess. I’ve yet to come across a case where it wasn’t that - iPhone 7 is especially tricky to do board-repairs on, to my experience. You have to be super precise with your heat and take care not to melt any tin on other surrounding components or move them.. - location of NAND is very close to BigAudioIC and PMU+PMIC - one defective soldering and the phone continues to be dead :)

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