Do Carriers Provision effect a handset device after being flash, if set wrong "HTC"

[dollaboi954]

i have a htc touch pro 2 sprint and flash it to metro pcs (with working internet and mms and calls and sms)it was working fine on mighty rom when i left the store but that same day stop working. all i can do now is make & pick up calls and recieve texts but cant reply back to texts with out getting an error. and the internet stop working a reset. even after the CM_guardian was remove.

do it have something to do with carriers provision or mighty rom
what could be cause of my problem??? Need Help