Firmware update on DSO Nano V3 - "Insert Disk"

I have a DSO Nano v3 that I purchased a while back (no SD card in this model) and I have been trying to update the firmware on my device. When I follow the instructions I successfully boot into the firmware update mode, but instead of seeing the disk drive where I can update my firmware, I see instead a generic USB disk drive which only reads “Insert a disk into Drive G:”. I am running windows 10 x64.

The only comparable issue I have seen is DFU Virtual USB disk unusable Where at least one poster has said that it worked on Windows XP?

Has anyone else had this issue before?
I’m currently running v3.22a for what its worth