Default metro pcs m919n wanam lite rom

I have searched the forums, and I am sure it is here somewhere, but I have the metro pcs m9191n, rooted, version 2.2.2 baseband m919nuvuamf2,
kernal 3.4.0-795095. Can I safely install the wanam lite xxufnas v2, if so do I need to install modem, bootloaders first. I cant get any updates via kies as the device is modified. Please be gentle with me. LOL