As promised, Marvel’s Spider-Man has updated the save transfers between PlayStation 4 and PlayStation 5, which means you’ll be able to track your progress on Sony’s next-gen console exactly where you left off. You will need to ensure that the original game and Marvel’s Spider-Man Remastered are updated to v1.19 and v1.001.000 respectively.
Then, when you’re on the Marvel’s Spider-Man record selection screen, upload your files to the cloud. Load up Marvel’s Spider-Man Remastered and download your progress from the save selection screen, and you’ll be good to go. All of your trophies will appear, and you’ll even get the new bonuses if you manage to complete their requirements on your PS4 save.
Unfortunately, you need the original game to complete the transfer, so if you’ve sold the Blu-ray before, you’re out of luck. However, you can use PS5 backward compatibility to download your savegame, so you don’t need to have your PS4 plugged in to do this. Obviously, it’s not the most transparent solution out there, but at least Insomniac Games has listened to the comments.