The version says 1.03 (revision 01) I go to update the master file and it says checking uniden server, then a new vet of Sentinel is available. You must install it before updating the database. Then when I cancel it says the version of database is current version.
Download Sentinel directly from Uniden's website, save the file, then install it. We still don't know which radio you have, so here is the link for all possible units: https://www.uniden.com/radio-scanners/scanner-software