can someone help my prl is unavailable and it wont change I ----ed something up a while back, carrier bundles and prl flashing used to work in the past but now I dont know what happened No matter what option I try i get no prl and stays no service. iphone 4 cdma (of course)

I also cant ever dial *228 what should i do? I thought a restore would restore the system/library/carrier bundle files to back when I first bought the iphone.