It works basically the same as any other game patching done using Luma. You'll need the files for the patch, first of all. Then on your SD or microSD card, you'll need to create a directory for the Dragon Quest 8 patch files. The directory should...
only ps5 updated to latest firmware can go on psn, jailbroken ones just don't use psn or they risk getting flagged or banned, altho spouting profanity in online play alredy does that