I just bought a att htc one off Craig's list and it is tampered/relocked. The phone boots straight into fastboot and there is no operation system on phone. I tried to use ruu to get it back to stock but it freezes at checking hash 5percent. I also tried to fastboot the ruu zip but it had an error verify 12 signatures. Are there any other suggestions that I could try to get an os back on this phone or is this phone pretty much bricked?
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