If you are interested in exploring PES 2021 Season Update (which is technically a patch for PES 2020), it is also available for the PS3 here , though it is a paid update, says Softonic.
When you type this phrase into a search engine, you will find dozens of forums, file-hosting sites (MediaFire, MegaUp, 1Fichier), and YouTube videos promising a free PKG download. pes 2020 ps3 pkg link
You may need to activate your system and use a RAP file for licensing if it is a PSN dump. How to Find Valid PS3 Game Files Safely If you are interested in exploring PES 2021
Insert the USB into the right-hand side USB port of your PS3. How to Find Valid PS3 Game Files Safely
PES 2020 on PS3 offers a unique experience. While it may not have the graphical fidelity of the PS4/PS5 versions, the gameplay mechanics are solid.
Even with a perfect guide, things can sometimes go wrong. Here are solutions to common problems.
To help find the exact variant you need, could you share the of your console or original game ( BLES for Europe, BLUS for Americas )? I can also provide instructions on how to split large files if you are running into the 4GB FAT32 limitation. Share public link