hello to all, I have a problem with htc m7, I 'arrived in the loop remains stuck on the htc logo, I tried to do the wipe but nothing so I'm trying to put a firmware and unlock the bootloader, I do the whole procedure to unlock the bootloader arrival on the unlock screen and I skip ok, but when I put it in fast boot the bootloader and always closed does not unlock I tried many times but nothing !!!!!!!!!