mobile

Hi, I just Updated my moto g to 5.1. This moto g was originally a stock one but then i flashed the GPE on it. I had a little trouble updating had to reflash the file in this thread for the 5.1 update to boot. Now i am having the same problem i had when flashing 5.0, The device does not connect to T-Mobile. I have reflashed the previously working fsg file and still no connection that worked on android 5.0.1.
Thanks for your help.