We've seen how to install the BIOS, but what about all the other steps? Here is a quick guide on how to quickly download the emulator and be on your way to playing games in no time.
How to emulate the PlayStation 2 on the Steam Deck Just put all the files you've downloaded off the internet in the folder, and you're good to go. The emulator will create several folders on your portable console, one of those being called 'BIOS'.
Once the files have been downloaded, you need to have the PSX2 emulator installed on your Deck. Unfortunately, we cannot link any of the websites carrying the required files, but a quick search on Google should definitely help you quickly download what you need.