Visit this Site with a PS4 on Firmware 5.05 to be able to run unsigned code, use Mod-Menus, Install Packages and more.
X-Project v1.5.7 for Firmware 5.05
Credit goes to DefaultDNB, Leeful
Original Release Thread: GBATemp
X-Project v1.5.8 Beta for Firmware 5.05
Credit goes to DefaultDNB, Leeful and fenwick67
Original Release Thread: GBATemp
PS-Phwoar! for Firmware 5.05
Credit goes to Leeful
Original Release Thread: GBATemp
Mira for PS4 Firmware 6.72 by sleirsgoevy
Credit goes to sleirsgoevy
Original Github: sleirsgoevy