The UASD is WAY out of date, and doesn't have any capability to download data from here. However we're getting ahead of ourselves...
Almost everything I'm about to mention is available from a link found here - and note that all links are always blue...
Programming Your Uniden Scanner - The RadioReference Wiki
a. Your first task is to discard the Uniden manual and download the
Easier to Read manual from the site on that page;
b. We also have a
DMA FAQ which will answer many of the questions that the Easier to Read manual doesn't. It also talks about the relationship between systems and groups, and a bit about how quick keys work. Understanding these concepts is key to understanding how to program your scanner
c. Next is getting a USB-serial converter and installing it on your PC. The
Connecting scanners via USB article tells you a great deal about some COTS USB converters besides the USB-1 that are known to work, as well as how to use Windoze Device Manager to diagnose connection issues
d. There are many good programs - some free- that will help you with programming that scanner. FreeScan is quite popular and a good place to start, as well as being free. It's
User Guide is also linked here at the bottom. The link for FreeScan can be found in the
DMA Software Support article.
e. To download data from the database you need a
premium subscription (cheap). Or ask for a file for your area. If you use FreeScan, you should know that it can import BuTel ARC and UASD files as a source.
f. Finally you should know that there is much newer firmware available for this scanner. It's probably not critical as you are starting off, but you should know it's there. The link for it can be found in the DMA FAQ under this link...
Updating the Firmware in Uniden DMA Scanners - The RadioReference Wiki
That should be more than enough for now...HTH...Mike