Sprint TP2 won't provision after flashing with Mighty ROM

[whizzer]

This is my first post so be nice. I bought a TP2 on Craigslist after having good luck with WM6.1 on various devices. I'm no geek, but I've tweaked a little.

I found the TP2 had been flashed to MightyROM and simply will NOT provision to Sprint, even after an hour with Sprint Tech Support. No internet connectivity at all. I tried the provisioning screen but no joy.

Phone will make and receive calls and SMS. I have 6 SERO lines and this is one of them, if that matters.

Any ideas?
Thanks!

Stan