[Q] Do I need to relock bootloader/downgrade firmware for AT&T warranty service?
I have a OneXL with AT&T. It came with the 2.20 firmware. I accepted the 3.18 OTA, and was stuck without root for a while (dumb, but no big deal). After the new exploit came out for 3.18, I unlocked and got S-Off, and things have been fine, I ran a few sense ROMs, settling on ViperXL 4.20.
Well, I work in a IT asset disposal warehouse where I'm a computer tech, and some of the guys in the warehouse who do inventory thought it was a good idea to steal some smartphones we get in for recycling. Enter new company rule: No cellphones in the building. If you are caught with one, you get suspended, and your phone gets confiscated while they make sure it isn't their property. So, my choices are to leave my phone at home all day, or leave it in my glove box in my car in the Texas heat in July/August. For the first week, I did not shut off the phone before leaving it in the glove box, but I do now. I started to get random shutdowns and call drops. I always make sure my phone is cooled by my A/C before using it.
I flashed the stock kernel (I had beastmode) and I flashed a fresh ROM to see if that would help. It didn't. I think there is a hardware problem with the phone that might be related to leaving it in my hot car while at work.
I decided to take my phone into AT&T as it is still under warranty, but I don't want them to see that I tampered with my bootloader. Is there anyway I can RUU to 2.20 or 3.18 and not get the "Re-Locked" message on the bootloader screen?
Is there a how-to guide for this?
Am I boned because I accepted the OTA before I unlocked/rooted?