To convert a PS2 ISO or BIN/CUE file into a PS4-compatible PKG, developers have created specialized software:
Can You Play PS2 Games on PS4? A Modern Gamer's Guide - Eneba Juegos De Ps2 Para Ps4 Pkg LINK
For users with a jailbroken PS4 (typically running firmware versions like 9.00 or earlier), the console can run "Fake PKG" (FPKG) files created from your own game backups. Required Tools for Conversion To convert a PS2 ISO or BIN/CUE file
: You can buy specific PS2 Classics for PS4 directly from the store, such as Grand Theft Auto: San Andreas , Jak and Daxter , and Bully . Playing via PKG (Jailbroken Consoles Only) Jak and Daxter