On your PS4, go to Settings > Debug Settings > Game > Package Installer .
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Elias held his breath as he moved the file to his battered USB drive. Back home, in the dark of his room, he plugged it into the PS4. The console’s fan roared like a jet engine. He navigated the debug menu, clicked "Install," and waited. The icon appeared—a blood-red omega symbol. On your PS4, go to Settings > Debug
If you have a PKG file and a Jailbroken PS4: On your PS4