Actually the 4.1 version works perfectly on sprint, make sure you are flashing the right version. Saw some posts where some could no longer find it, so maybe you are flashing the 4.2. The 4.2 will boot and run just fine with TL's kernel, but no radio, no data. Don't mess with that one for now.
Really enjoyed the 4.1, but moved away since development moved to 4.2
Sent from Taptalk on HTC One on some awesome custom Rom!
HTC One - M7WLS - S-Off - Sprint
HTC Evo LTE - (Backup Device) - S-Off - Sprint