Alongside the PS4 11.02 Firmware Update and previous revision, today Sony pushed live PS5 System Software / Firmware 23.02-08.40.00.05-00.00.00.0.1 bringing with this latest PlayStation 5 update 23.02-08.40.00 security fixes among the official changelog detailed below. 
@zecoxao on Twitter reports the following, "Sony has officially patched DNS methods and links in messages methods on 8.40. it was good while it lasted"
As always, DON'T UPDATE if you wish to use PS5 Game Backups and PlayStation 5 homebrew apps, emulators, etc whenever a full PS5 Jailbreak Exploit (PS5Jailbreak Status) in the PS5Scene becomes publicly available... or testing PS5 Game Backup File Dumps and PS4 Fake PKGs (FPKGs) on PS5 with PS5 Hacked consoles using the PS5 4.03 HEN PS4 FPKG Enabler, PS5 4.50 HEN PS4 FPKG Enabler or PS5 4.51 HEN PS4 FPKG Enabler payloads.
Download: PS5 Firmware 8.40.00 Update (US) / PS5 Firmware 8.40.00 Update (EU) / PS5 Firmware 8.40.00 Update (UK) / PS5 Firmware 8.40.00 Update (AU/NZ) / PS5 Firmware 8.40.00 Update (JP)
Here's the PS5 v8.40.00 Firmware Update changelog from Sony's official page: Version: 23.02-08.40.00
As always, DON'T UPDATE if you wish to use PS5 Game Backups and PlayStation 5 homebrew apps, emulators, etc whenever a full PS5 Jailbreak Exploit (PS5Jailbreak Status) in the PS5Scene becomes publicly available... or testing PS5 Game Backup File Dumps and PS4 Fake PKGs (FPKGs) on PS5 with PS5 Hacked consoles using the PS5 4.03 HEN PS4 FPKG Enabler, PS5 4.50 HEN PS4 FPKG Enabler or PS5 4.51 HEN PS4 FPKG Enabler payloads.Download: PS5 Firmware 8.40.00 Update (US) / PS5 Firmware 8.40.00 Update (EU) / PS5 Firmware 8.40.00 Update (UK) / PS5 Firmware 8.40.00 Update (AU/NZ) / PS5 Firmware 8.40.00 Update (JP)
Here's the PS5 v8.40.00 Firmware Update changelog from Sony's official page: Version: 23.02-08.40.00
- We've made some security fixes to the system software.
- We've improved system software performance and stability.
- We've improved the messages and usability on some screens.
