According to theflow0 disclosure for BD-JB exploit, here is some table chart which exploit is working and which exploit is not working for each console PS4 and PS5 with their respective firmware :
How to "downgrade" a PS4: full tutorial by Modded Warfare - Wololo.net
How to Downgrade from Patch 9.03 to 9.00 - This Is A Must Watch! - YouTube
Mini PS4 Payload 9.00 Homebrew App by Master-s (aka Rooo7) | Page 3 | PSXHAX - PSXHACKS
PS4: Update 9.03 Patch Notes
Don't fall victim to FAKE PS4 9.03 Downgrade Apps - YouTube
Specter on X: "PPPoE bug patch in PS4. As can be seen, patched in 9.03 on the right. Probably not worth attempting to exploit this on PS4 as it won't move firmware
Top Games For PS4 9.03 Jailbreak - YouTube
It is apparently possible to revert your PS4 to its previous firmware version, without any backup - Wololo.net
How to fix PS4 Update 9.03 Error SU-42481-9
PS4 9.00 Jailbreak. Should you update your PS4 to 9.00? - Wololo.net
9.00 Jailbreak Full Tutorial (Modded Warfare) : r/ps4homebrew