Something you can do is just reflash only the system image for the version you are on to remove your modifications then you should be able to take the update. If you do it properly, you shouldn't...
I think fibre is crucial for areas that have high data demands but for rural areas this will be great because there isn't as much to congest a connection with.
Tmobile lit Fresno sf and sac among the first for lte
via the HoFo App
The issue with that is T-Mobile is the only carrier to deliver service to the majority of the town. AT&T only has signal in some areas while sprint and verizon are no where to be seen for miles.