The .exe files are the setup files for the software. Same as on the SD card. I can't see any reason to change those.
The dsp_0075 files are exactly the same, including the checksums. Seem redundant to change it.
Using all the 1080 bin files makes sense, as it creates a version history to match release notes.
I haven't analyzed the bin files yet, since I don't currently have access to my hex editor
Bottom line: I can't see any reason this would "brick the radio, since it clearly states in the release notes the updates can be written, even tho the scanner already has the most current firmware. This means the scanner should be recoverable. Still wondering how to force flash. I I knew that, then I am positive the scanner can be recovered. Retro. PM me