[Q] Need ATT g3 radio topic

Please help...
I need a radio image compatible with the att G3 (d850)
I flash the wrong radio and seems i don't have a backup :(
I can't seem to find a radio flash/image or a rom with a radio image in it.
My wife has a stock phone (and she will not let me root it) with baseband MPSS.DI.2.0.1.c1.13-00009-M8974AAAAANPZM-1
I don't know if their may be a way to get it off her phone without root?
Any help would be greatly appreciated..

Thanks