Here's how to update your PS4 to 9.00 then Jailbreak, Much Better stability than 7.55, 7.02 or 6.72. : r/ps4homebrew
All In Communication - 【 JAILBREAK PS4 & PS4 PRO 】 ⚠️ NOW AVAILABLE ⚠️ Minimum Requirement PlayStation4 : * FIRMWARE 9.00 and below * USB PenDrive 2GB * PSN PERMANENT DISABLE *
PlayStation 4 OFW 9.00 Jailbreak released, can reportedly affect PS5 consoles as well | Page 13 | GBAtemp.net - The Independent Video Game Community