You might want to say that in the body.
Flashed the h811 build. Would like to report that it doesn't see 5 Ghz wifi networks and it wouldn't connect to data on T-Mobile. When I switched the APN it flashed "LTE" briefly but then dropped to no service at all.
ROM won't install unless I sideload it, and I have to reboot it several times to get it to finally boot fully once it's installed.
You should have no problems flashing T-Mobile ROMs on there, and you can always flash back to an AT&T rom if it doesn't work.
You will need to follow these instructions to get it to flash though: http://forum.xda-developers.com/showpost.php?p=45...