I have a PSR 500. I'm using ARC 500 software. I log in, select my state and county, select the trunking systems and upload all the data to my scanner. The upload appears to have gone perfectly, no errors.
Just to be clear, all you have done is down loaded the info on RR into ARC500, not your scanner. The system(s) should appear on the left plane of ARC500 and it should show a folder with some Talk Groups under it.
Next, you need to click on the PRS500 menu and select "Send Data" This will bring up a new box with your System(s) Stored in the PRS500, and on the bottom, a list of all the systems in your software. Just click the "send all systems, AND "Overwrite systems with the same name." Then click on the "send selected systems, and it will load into the scanner.
Now, the big question..........I don't know how to find the data that I just uploaded to my scanner and how to tell the scanner to scan Montgomery county trunked systems.
Your scanner will automatically scan all systems loaded before, and any you have just downloaded. Finding them is a little more involved, and would probably need some discussion about quick keys.
While you are at it, it would be good idea to READ data from your scanner. Follow the steps above, except select READ Data, and it should show you everything in the scanner. This time select only those systems that are NOT in your software that were programmed by Scanmaster. That way, you can always reload them if they should get deleted, messed up, or you need to add some new things to the data they programmed. Then select Quick save all systems, and you will have them saved on your HD in your software. Also, There is a thing called Profile. Click on File, Profile Creator. It should show you all the systems. Click on Import all and then save profile. That way, they will always load back into your software