https://wololo.net/2022/05/18/ps3-cfw-evilnat-4-89-cobra-8-3-cex-released/
4.89 jailbreak by evilnat is out, it has been for awhile. Just click the link and look for CEX (it's easy to convert to dex)
EDITED 11/25/22: Deleted old link and pasted most recent jailbreak.