Re: Looking for rooted 4.3 flash?
The only guide that I'm aware of is the xda-developers thread referenced in the OP in this thread. If you have files on your phone that you don't want to lose, I'd recommend backing them up to your PC via USB. Then I get those backed up with Carbonite on my PC, so very unlikely to lose them.
Is there a guide for people that have a rooted GS3 on 4.1.2 and want to update it rooted to 4.3? I'm kinda new to all this stuff and don't want to lose my files on my phone.
The only guide that I'm aware of is the xda-developers thread referenced in the OP in this thread. If you have files on your phone that you don't want to lose, I'd recommend backing them up to your PC via USB. Then I get those backed up with Carbonite on my PC, so very unlikely to lose them.