Radio shack pro-197 reband need help?

I;am new to this and need help. I have a radio shack pro-197 and I scan the city of fayetteville nc fire and police and the viper system for cumberland county nc. The viper system has rebanded and I don;t know what to do to fix it. I reprogrammed the scanner with arc 500 the city comes in loud and clear but I cant receive the viper system. Does the firmware need updating? If so how is it updated? Thanks for the help.