[medinatwin]

Im not sure, but when the phone turns on, did you get the sprint logo show up or verizon logo to show. the unlock code your using is for verizon, sprint uses a different unlock code specific to your ESN ID located inside when you remove your battery. There's a utility somewhere to find the Unlock Code. I'll try to find it in one of these posts for you. You might also want to try and use the original ROM to reflash. if possible.
Just a thought

Late,
TWIN