It is apparently possible to revert your PS4 to its previous firmware version, without any backup - Wololo.net
How to Get a PS4 Out of Safe Mode: Fix a Safe Mode Boot Loop
PS4 System Software / Firmware 9.00 is Now Live, Don't Update! | PSXHAX - PSXHACKS
Can I reinstall the PS4 console system software with older file recovery file in save mode?! And make downgrade?! : r/PS4Mods
PSXLink App: Download PS4 Game Update PKGs & Firmware by Rasoulia | PSXHAX - PSXHACKS
Are you guaranteed to get a PS4 with firmware 5.05 or lower if you buy it now? - Wololo.net
PS4: How to manually update to Firmware 9.00 - Wololo.net
PS4 looping at restart asking for firmware restore or update. : r/ playstation
PS4 9.60 UPDATE! | How to SAFELY INSTALL PS4 9.60 UPDATE | PS4 Bootloop ERROR FIX! - YouTube
PS4-Firmware-Checker/ at master · pearlxcore/PS4-Firmware-Checker · GitHub
How to SAFELY INSTALL PS4 9.00 UPDATE | PS4 Bootloop ERROR FIX! - YouTube
PS4 Firmware Corruption - A helping hand from WAY-Launchers - YouTube
How to Revert the PS4 to a Previous Firmware (Full Tutorial) - YouTube
PS4 System Software / Firmware 8.50 is Now Live, Don't Update! | PSXHAX - PSXHACKS
How to update your PS4 to firmware 4.05 (or any other firmware) - Wololo.net
PS4 Firmware Revert Overview - YouTube
How to Get PS4 out of Safe Mode - Driver Easy
PS4 System OS Firmware Update Recovery Edition USB Flash Drive (Latest Version) | eBay
Reinstall PS5 console and PS4 console system software using Safe Mode
PS4: How to manually update to Firmware 9.00 - Wololo.net
Which firmware download for my Ps4 fat 500gb ?? Retail , testkit or recovery?? I want to update 6.20 to 6.72 for jailbreak ! Sry for noob question : r/ps4homebrew
PS4 Firmware Checker for Latest System and Recovery FW by Pearlxcore | PSXHAX - PSXHACKS
Check Version of PS4 System Software - YouTube
GitHub - pearlxcore/PS4-Firmware-Checker: Checking the latest PS4 firmware (System & Recovery FW)
