EP 1) How to Jailbreak the PS4 (7.55 or Lower!) - YouTube
PS4 Jailbreak Guide - HEN Exploit on 5.05 - CFWaifu
7.55 PS4 Upgrade & Jailbreak - Step by Step Guide - Should you update to 7.55? Realtime Jailbreak. | GBAtemp.net - The Independent Video Game Community
Playing PS4 Games Over LAN on 5.05 Firmware with XBSLink Guide | Page 6 | PSXHAX - PSXHACKS