Here is a quick guide I made for bundling PS4 game updates into PKGs. PKG Kitchen 1.3 is used and all thanks to the toolmakers...
Game Update PKG
Needed: PKG Kitchen 1.3, Offline Update PKG ≤4.05
1: Insert game disc and install 2: Exploit idc, xvortex ftp payload 3: Dump 4 files from system_data/priv/appmeta/CUSAxxxxx/* to dump\appmeta\ (Must get these files before update) 4: Exit title/ftp, reboot, exploit xvortex, install sony game update pkg (This will be the hardest step, obtaining offline 4.05 updates) 5: Check for update to game on information screen 6: Reboot, exploit idc, xvortex ftp payload, minimize, load game, connect ftp