I've fastbooted so i'm completely on stock. No safestrap, or custom ROM. The OTA didn't work but that was before fastboot so I've been trying to flash JB manually. I've wiped data and cache before this. I place the JB file on my ext. sd card. I go into recovery and hit install from sd card and choose the JB. It starts to update, but it gives me this error shortly after. "Verifying update package Failed to verify whole-file signature Signature verification failed Installation Aborted" I've redownloaded the JB files from two different places and so I don't think its the files are corrupt. I don't know where else to go from here. I always do it with above 60% battery so that isn't a issue either. Any help? :/ Thinking of un-rooting my phone in general to see if that makes it work.