This is the total incorrect lingo to use, and makes trying to help you very difficult, the is no "firmware" you need to update, there is no "code plug".
First format,
second
clear user data in Sentinel software (of course your using the orange shielded sentinel right)]
Then you create your Favorite List w a System, a Department w a TGID and a Site w frequencies,
then you turn them on, one at a time FL, SQK, then the Department