Installing hacked PS4 titles requires caution. Please first refer to the post below for how to jailbreak your device
Step-by-step guide to hacking PS4 console to version Exploit FW5.05
---
Installing the game:
1) First, extract all downloaded files using the latest version of WinRar
2) Move the pkg file to the root of your external hard drive, formatted to exFAT. Be careful not to copy it to any subfolder, but only to the main address of the external drive
3) Connect your external hard drive to your PS4 console. As the Debug Settings section is activated after the hack, go to this section, which is Settings => Debug Settings
4) Go to Debug Settings => Game => Package Installer. The file you downloaded in step 2 will be displayed here
5) Press the X key to start the installation. After completing the installation, the game will be displayed on your console's main page