https://bugs.winehq.org/show_bug.cgi?id=57128
--- Comment #4 from exposight exposight@gmail.com --- (In reply to joaopa from comment #3)
Created attachment 78140 [details] USB content is listed
I do not know what is supposed to do the software,
but processing the two steps given in Comment 0 allows me to list the content of my usb pen
Software archived here
The problem is not in the open dialog but later. If select root of USB drive and click Open in the dialog to use that as the target for map files download, it tells the drive is not a USB. There is also screenshot attached from bug reporter showing that message.
So the issue is that the actual USB drive is not detected as USB by the software for some reason.