Here are the results of my testing...
1. Install the Viewer 1.08 from the firmware 1.006 (BlackVue\Application\Viewer for Windows\BlackVueSetup v1.08.exe).
2. Copy the NF files (together with the other .gps, .thm, .3gf, .mp4 files of course) to a local directory on the Windows PC.
3. Run the...