OK, folks...having some problems.
My floor model was on the 2.1x version. In an effort to upgrade to 3.15, I first upgraded Helix Editor in my PC to 3.15. Initially it would not connect to the floor device via USB. Restarted PC and then got a connection. Began the 3.15 firmware upgrade to floor device with running the backup, following the automated directions through Editor. All went well. When I got to the firmware upgrade, that's when it all went to hell. After it got past 27% complete, for whatever reason my PC screen went blank. I noticed on the floor display it read "Boot Failure. Entered Update Mode!". I expected this to be normal, then I noticed the reason my PC screen went black was because it restarted.
Once the PC was back to my desktop screen, I opened Editor and it will not connect to the device. I've tried cycling power to floor device, restarting PC, and exercising the USB cable in the PC port...no joy.
I've limited time with my new job to spend even an hour searching the archives here for a solution, so can anyone help by leading me directly to a solution? Thank God I was able to back it up first.