However, the "interesting guide" you likely encountered refers to , which is a complex workaround for jailbroken consoles. 1. The Emulation Workaround (Jailbroken PS4 Only)
The difference in CPU architecture is the first and most critical hurdle. A PS3 game is written in machine code for the Cell processor. The PS4 uses an x86 chip. They speak fundamentally different languages. ps3 to ps4 pkg converter
While you cannot convert PS3 games into playable PS4 PKGs, you still have several excellent avenues to enjoy the massive library of PS3 classics: 1. RPCS3 (PC Emulation) ps3 to ps4 pkg converter