Help Note 3 (SM-N900P) on PagePlus

[rockdude]

Hi,

I am looking for some help and guidance.

I have a Note 3 (SM-N900P) Sprint phone that I modded to work on PagePlus Cellular.

It is currently running Android 4.4.2. (stock except for the mod to make it work with PagePlus)

I would like to upgrade the ROM to whatever is the latest that will work with my phone.

I just don't want to have to go through all the hoops to get it back on PagePlus after the upgrade.

Is there a way to flash the ROM only so that it leaves the PagePlus mods alone?

Any help would be greatly appreciated.

Thanks in advance.

Rockdude