PS4: How to get your hands on a PS4 with firmware 5.05 or lower - Wololo.net
Max Games - PS4 Jailbreak# fw 5.05 You can run any game without buying the disk You will be able to play PS3 games on your PS4 device Using special game files
Bought a PS4 Pro on OfferUp and...it was on 5.05. Totally unexpected. : r/ps4homebrew
Playstation 4 Linux on Twitter: "Zelda: Breath of the Wild running on PS4 PRO 5.05 becomes true via Psxitarch v2 thanks @Ps3ita_Team @masterzorag @valentinbreiz @fail0verflow @eeply @C0rpVultra @shuffle2 @CelesteBlue123 @flat_z #ps4linux Exzap
Backport 6.72 PS4 Games to 5.05 (Easy Method) - YouTube
5.05 PS4 Pro with hen 2.1. I just picked her up for £300. Today is a very good day. It will certainly make the wait for PS5 a bit less painful. : r/ps4homebrew