Thanks David L, I use Linux computers and didn't have a windows computer setup to run the batch config tool so after many attempts to load win 10 on an old laptop with a failing hard drive (apparently) I figured it out and got it installed. I was able to get to SYSTEM->SYSTEM MAINTENANCE->Remote Upgrade as per
alexdelprete step by step instructions. However when i tried the remote upgrade it didn't seem to work, then after that I couldn't even get my DB1 to show up in the top of the BC window, I struggled with this for 2 days with error messages that it couldn't connect to the camera, yet RTSP obviously still worked and connected because I was still seeing the feed both in the EZVIZ app and in Zoneminder. anyway I finally cut the power to the DB1 and now can connect to it with batch config, but every time I try the remote upgrade I almost immediately get a red "upgrading failed " message in the lower right corner of the BC window. I am currently skimming through this thread to see if anyone else has had a similar problem.