(Disclaimer,if you want to change setting go into desktop mode,If you want to play go in gaming mode)I’m guessing you are using emudeck and if you followed the tutorial from the video on the emudeck site (it’s the same mentioned in this thread) it’s really easy.bios files must be transferred to the appropriate bios folder. Unpacked . I’m using the same settings from the video, minus some tweaks ( internal resolution and a setting for using other textures). Also remember to place the copy of your games in the correct folder too( I’m using the USB transfer wizard found on emudeck main menu , it’s really easy).I SUGGEST YOU to use the USB transfer wizard because after you transfer the games he needs to parse them and download a cover if you want them to appear in your library in gaming mode (which I highly suggest since I didn’t find a way to make pcsx2 recognize the controller in desktop mode, in gaming mode is automatically configured)