: Deleting PS3UPDAT.PUP within game folders is safe and saves space.
While it’s tempting to save time on a download, "highly compressed" packs from unofficial sources often cause more headaches than they solve:
"Compression breaks multiplayer or trophy support." Fact: Lossless compression does not. Lossy repacks might strip trophy data. Use original dumps for online RPCS3 (RPCN). rpcs3 highly compressed games work
However, recent updates have brought some relief. As of development builds in early 2026, the . This is a major step forward, as it simplifies handling disc-based games. While an ISO file itself isn't compressed (it's a raw, uncompressed image of the disc), this change paves the way for future support of compressed image formats. It's a topic of ongoing discussion in the community, but for now, the emulator relies on users to implement compression through external methods.
: Always use your own PS3 firmware and game dumps to stay within legal guidelines. Check Performance : Deleting PS3UPDAT
RPCS3's built-in save states also incorporate strong compression. Save states are snapshots of a game's entire memory, which can easily reach gigabytes in size. With modern updates, the emulator uses to reduce the file size of these save states often by over 50%, minimizing their storage footprint on your drive.
: Many users convert folder-based games into .iso files. While not "compressed" in the traditional sense, this keeps the game as a single file, making it easier to manage. Use original dumps for online RPCS3 (RPCN)
Only the extracted folder (typically containing a PS3_GAME folder and EBOOT.BIN ) can be used by RPCS3. Do "Repacked" or "Compressed" ISOs Work?
While the download might be 5GB, it will still take up the full 40GB on your hard drive once extracted. The Risks of Using Pre-Compressed Games