Ps2 — Games Pkg For Ps3

However, official Classics have trophy support (rare). Custom PKGs require third-party mods to add trophies.

You cannot install these PKG files on a stock, unmodified PS3. You need: Ps2 Games Pkg For Ps3

The most reliable way to get a PS2 game running is to encrypt it using your specific PS3’s ACT.DAT file. This makes the game "signed" for your console only. However, official Classics have trophy support (rare)