Submitted a ticket last night, waiting on a response. Called Peplink this morning and they said that FrontierUS had the ticket. In the mean time, I had to power cycle the router this morning to get our phones back up and lost my up time .
So I had to power cycle the router to get the PepVPN sessions to come backup up and to restore internet connectivity, rebooting to firmware 6.1.0. I again attempted the firmware upgrade on Sunday night from the same workstation on the LAN and was able to upgrade the firmware w/o issue. I still would like to know what happened to cause the firmware update to fail. The firmware had been uploaded to the Balance 380 fine, but the update had failed after that point.