I am still unsure of how to flash a modem.
I have custom recovery, custom kernel, stock rom and root.
May I flash a modem and have my system untouched?
there are 2 ways....
using MOBILE ODIN from Chainfire u need to use - in modem #2 modem.bin + and put this in modem #1 NON-HLOS.bin
or if u use ODIN v3.09 put modem.bin in CP
IF FOR SOME REASON IT DOESN'T STICK, use Triangle Away v3.26 is the latest Chainfire has... then flash the modem again, there have been many issue where the modem and bootloaders don't stick, and this helps make it stick...
flashing modem's doesn't change or do anything to your rom, you just have to be careful that the modem u r using is made for ur phone...