I was able to download the firmware updates for my TL280, my control panel (HS2032) and my 3 keypads. I found a download of DLS 5 and was able to connect from my main PC with no cables via IP through the TL280 communicator. The C4 alarm gui is showing all the zones open and close as they should so really happy with the way its working. I did the updates today and everything is working now for all of my zones.
I don't have a landline, so I pulled the boards and they are updating on the bench.
So the dealer only wanted to update via landline or physically.
What I learned from my dsc dealer is that they can do it remotely over GSM or IP/TCP via DLS but dsc charges a lot for data transfers over the 10Kb quota.