Hey! I'm in the same situation as you, carrier unlocked ATT ebayed to Europe, stuck on A10. Were you be able to crossflash? If so, i would thank you deeply for a quick rundown on the stepsI'm not interested in rooting, Just being able to upgrade the AT&T variant to without needing to go to the US and connect to AT&T. Will this help me do that? if so, what difference (if any) from the tutorial will I need?
Also, can this be used to crossflash? If the T-mobile software works for the AT&T variant, I might do that just to get official updates conveniently.