If the game asks for a higher firmware version than your PS3 has, you may need to spoof or use HEN with version patch. Alternatively, repack with lower target firmware – but some games won’t boot.
One of the reasons this is the "better" method is how it handles large files. PS3 internal drives use FAT32 formatting, meaning no single file can be larger than 4GB. how to convert iso to pkg ps3 better
When converting an ISO that contains files larger than 4GB: If the game asks for a higher firmware
If your ISO is encrypted (original disc dump), you must decrypt it: If your ISO is encrypted (original disc dump),
Your PS3’s external drive might be FAT32 (max file size 4GB). That means your ISO must be split into .ISO.0, .ISO.1, etc. How do you convert a split ISO to PKG?