I've been trying to reinstall iOS 4.2.1 on my old 3G iPhone, but it throws back error 9 or 6 every time. I've already tried most of the common solutions. Can anybody offer any assistance? Thanks!
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=== Update (06/17/2017) ===
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I also forgot, it's stuck in DFU mode, and the iOS was corrupted when I got it.
I've been trying to reinstall iOS 4.2.1 on my old 3G iPhone, but it throws back error 9 or 6 every time. I've already tried most of the common solutions. Can anybody offer any assistance? Thanks!