PS4 KEIJI: System Software 5.50 New Firmware Features Unveiled! | PSXHAX - PSXHACKS
PS4 5.50 Jailbreak? Firmware 4.55 Public Exploit Rewritten To Work With 5.50, Here Are The Details | Redmond Pie
group bigboss-kys on X: "The status of PS4 Hacking If you own a PS4 running firmware 4.55 or lower, congratulations, you can Jailbreak your PS4 and do a bunch of cool stuff