I came across someone locally who got burned on craigslist with an Att Galaxy S5. It worked fine then shortly after is was blacklisted so I got it for cheap from them just trying to get any of their money back. I have seen several listings on eb...
I have a stock gs3 for att that I rooted with the toolkit and installed the twrp recovery. I installed this rom and it will not get past the boot up screen with the gears spinning. I let it set for 10 minutes or so and rebooted, same thing.