I cannot raise this as an outstanding issue because it is not technically an issue or a bug. It’s a feature change user specific custom requirement modification.
Nethertheless maybe the community knows something we don’t?
How can I get a solution to switch Fn Key and Alt Key?
The Fn key has no scan code and cannot be changed, but you swap the WIN and ALT key values. We provide a swap and restore registry file, and you can also use the KeyTweak software to perform the modification. Download Win and Alt key swap Http://www.gpd.hk/filedownload/28238
I’m also aware that @joshwiththegoodhair did a script to to modify the bottom row of keyboard of GPD MicroPC - although from reading it it also swapped the Windows and ALT key not the Fn and Alt keys. (see here https://gpd.digital/t/linux-making-better-use-of-the-bottom-keyboard-row/30)
Perhaps like GPD have stated because there is no scan code with Fn key it is not possible?