Change T-Mobile htc one into AT&T htc one

[woodmedic]

Hello all. I am currently a Tmobile customer looking to switch to AT&T. I love my HTC one and would like to keep it. I was wondering if I can put AT&T stock firmware onto my T-Mobile version. I am really not into the custom ROM scene. I would just like to have the stock AT&T firmware on my phone. Is this possible and if so, how easy is it to do? Thanks!