My modem/baseband currently is I9505XXUBMH1. I tried using jamal's 4.4 ge rom but i lose signal often even on the new kernel. i tried other ROMs like Gummy, CM 11.0, and Foxhound and all of them give me no signal after a couple minutes. I have my APNs set up currently and am using the i9505 on t-Mobile in the US. what am I doing wrong?