I've already submitted a ticket for this and the end result was I'm being told that the interface has failed and I need to purchase a new one since I've had this MVPI2 for a few years.
Long story short, I tried to connect to my 2018 GMC Sierra for some data logging with the scanner. It again wanted to update so I let it go through the update process. However, instead of finishing and connecting like usual, it just stopped after the update, wouldn't start the resync process, and fails to connect. Both the PWR green light and the HOST red light remained lit at this point. The update was done while using the USB cable. I tried all the troubleshooting steps I was sent, including forcing the firmware to update by holding the bluetooth button for 10 seconds while plugging in. This tries to force a firmware update but I end up at the same result, no resync, contact support.
Anyone have a similar issue before and find a way to get it working again? I really don't want to spend $400 on a new interface right now, especially when the update in this new 5.0.4 software is what decided to brick my MVPI2.