Tmobile galaxy note compatible with att roms?

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http://forum.xda-developers.com – So just wondering is it possible for the t mobile galaxy note be converted to an att galaxy note? reason why im curious is because technically if they were the same phone or at least if we could turn our phones into att galaxy note wouldnt that also mean we could run att roms on our galaxy note? Has anyone tried flashing the tmobile note with an att rom, then flashing the modem over ? (HowTos)