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Released September 16, 2016. Model 1660, 1778 Available as GSM or CDMA / 32, 128 or 256 GB / Rose gold, gold, silver, black, and jet black.

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Can not restore iOS

Hi I have iPhone 7 A1778 that I can not restore. I am using 3U tools and original USB cable (I have restored many devices with this setup) with only dock flex and batery.

Recovery gets stuck on 24% - Updating S3E firmware, while log says “Closing the mounting of the drive\n”

It doesn’t give any error, just stuck there. I waited for 30 minutes.


I reballed the NAND, clean the pads (they were gray and I had to clean them), but it is still the same

Any help?

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So I’ll answer my own question - it was bad NAND chip. I had to replace it with a new one.

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Adam Grufík crwdns2893898:0crwdne2893898:0
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