Have you run into a PKG that failed verification? Let us know in the comments below. And remember: backup your PS4’s NOR/NAND before installing any unsigned packages.

Once verified, follow these steps to install the PKG on a jailbroken PS4: Format a USB drive to exFAT or FAT32 . Copy PKG: Copy the .pkg file to the root of the USB drive. Connect to PS4: Insert the USB drive into your PS4.

Sony signs every official PKG with a private encryption key. Your PS4 checks for that signature. If the signature matches, the console says, "This is official. Install it." If not, it refuses.