[Q] SMN910U get LTE Band 17

[zhable]

Hello,
Not sure if this possible but my Note 4 sadly isnt receiving LTE at the moment. AT&T requires 700 mhz for LTE in my area and my phone does have 700mhz, but on band 28 in stead of band 17. IS it possible to flash my phone to use band 17 instead of band 28? Any help is appreciated.

 

[Lodix]

They are different bands so it won't work...