Hi, so I got a replacement phone today and set about rooting it using this guide(can't post links, first result from xda googling root verizon galaxy s3 4.1.2) as I have the previous 4. Anyway I spent most of my day with a yellow triangle firmware upgrade error before tracing the issue to a corrupted varlec bootchain file. So after that was remedied I went to flash a recovery and selected TWRP. (Previously it seemed the stock recovery had been wiped from a failed CWM flash as nothing booted after a 10 minute period of waiting) I think I made an error in not booting regularly before testing the recovery because TWRP is asking for a password and after I cancel nothing mounts. People say this can be remedied by choosing format data but I can't find a clear answer on how that will affect the phone. I am most concerned because ODIN reported the TWRP flash as a fail, but it worked. I got the yellow triangle errors after this wipe, but a reflash of the VARLEc file made it work again. My previous stock ROM flash attempts (during the VARLEC issue phase) also reported fails at the boot.img stage. As you can see there is a lot going on and I can't quite track down a main issue, nothing has been this complicated before. My main concerns are: 1. How can I fix the TWRP recovery or replace it with a working one? (I like CWM and only decided to stray after the failures during flashing) 2. Can I somehow root with a faulty recovery? (I want to block the OTA update until I can at least buy a backup phone in case I mess this one up) 3. Can anyone explain any of these issues? I have a 4.1.2 VRBLK version. I have a stock tar of this, but am nervous given the previous failures of ODIN. I already called in an insurance claim before I fixed it, so I might wait until receiving it wednesday to try anything incase I cause another snag. Thanks for any help, I know this was long, I hope any of you out there prove smarter than me.