PS4: Firmware Update 9.03 available for download - changelog - Aroged
PlayStation 4 Firmware Update 1.7 Is Live!
Helpful tips on finding a PS4 on 6.72 or a lower firmware! - Hackinformer
Why Won't My PS4 Update? 3 Ways to Fix a PS4 That Won't Update
PS4 Firmware Update Out Tomorrow Too, View PS5 Trophies on PS4 - Push Square
Are you guaranteed to get a PS4 with firmware 5.05 or lower if you buy it now? - 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
4.05/4.55 PS4 Owners: should you update to 5.05? - Wololo.net