Just HEX edit, search for the text string with H
, then you can replace it
I don't think it will make much difference as RetroArch uses a database to compare against, RetroArch does not use internal names at all
I guess you could edit the database though instead
https://forums.libretro.com/t/editin...b-files/3571/2
You might get away with just a text edit though ofd the rdb files with something like notepad, use the search feature
Or the lpl Playlist file, notepad is fine though with large lists it may seem a bit slow to edit with, there are better options than notepad
EDIT
Editing the playlist seems the quickest and easiest option for what you want