Originally Posted by Motorhead1991
The odin root method I posted (written by ^ kemonine96 ^ actually) may work out well, if the kernel is the same.
I would not recommend using any of the ODIN images beyond maybe recovery for gaining root. The safest bet would be to try the stock update root method and even that will be semi-iffy. I would wager the ril / antenna / baseband are different than the ATT version at least and who knows what else they may have tweaked...