Thursday, 8 October 2015

Restore to Stock AT&T



Hey guys.
I have an HTC One M9 AT&T edition. It is S-ON and currently ***Relocked***. I have tried to use the RUU.exe 4 times now on two different computers which both give me the 170 error (USB connection failure) I have tried two different cables in different ports in two different computers. I have tried to do the RUU in the Bootloader and in Download mode. Neither work. I just want to try to return it to AT&T as soon as possible so which ever way may work would be great!



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