PS4 CEX2Semi-DEX: CEX Console with DEX Debug Settings via LightningMods | Page 2 | PSXHAX - PSXHACKS
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 :
PS4 System Software / Firmware 8.50 is Now Live, Don't Update! | Page 2 | PSXHAX - PSXHACKS
PS4 Jailbreak (PS4JB) 7.50 / 7.51 / 7.55 Work In Progress, Don't Update! | Page 9 | PSXHAX - PSXHACKS