iPhone 5 running iOS 7.1.2. Carrier "Sprint 16" and PRL 51101. In the past I have been able to use the method of replacing carrier.prl in the sprint_lte_us carrier bundle folder, use the PRL push flag in carrier.plist, and with a few reboots I could get full time verizon 3g roaming with "prl 00001." I am now visiting Alaska and am stuck on PRL 51101 with "extended" coverage and 1x data. I have tried every PRL I can find (11114, 11119, 53135, 00001) and I seem not to make any difference. After making the prl changes and after the last reboot I am stuck at no service. When checking phone info it will still say 51101. I have to restore a backup of the sprint_lte_us carrier bundle folder and then things will work again after a reboot. Any ideas? WIll the PRL update only work if there is native Sprint service around to start with? When things are working with 51101 @ 1x speeds on "extended" I can do the ##update# and it say success. Any help appreciated, would just like 3g data while traveling.