Already did all those things. Its not the settings or programming, the scanner worked fine until firmware update. No matter what is put manually for GPS it does not see my local tower anymore. All frequencies are correct.
Even reset everything, just updated database in scanner with all Service Typed checked...nothing.
If you can receive any site from the MPSCS system, then that rules out a firmware problem.
What site are you trying to receive? The SDS100 allows NAC to be set at the site level instead of the system level. In some cases the NAC listed for the site is incorrect in the database, and if the scanner is using that incorrect NAC, it will completely disable reception for the site. If a NAC is listed for the site, change it to NAC Search.