Padfone S TW serial Band 17 Activation with 5.0

I bought the padfone S a little premature it seems. I read up on it for a while but I missed the part where 1700 band is not enabled on it. I have seen a few members on here note that they have it enabled on their phones. I'm on AT&T right now but I'm not against switching carriers if it will get me faster speeds.

I upgraded to 5.0 using the firmware update from Asus and it went very smoothly. I'm just really hoping there is a way to enable 1700 band. If not I may have to search for an S plus and sell the phone. I don't mind rooting the phone if I need to.

Any help on how to achieve this would be appreciated.