Rogero has released CEX-4.21 CFW has been released with the recent LV0 leaked 4.21 keys.
This is a 4.21CFW spoofed to version 4.25 to allow SEN access
It can be used as a normal System Update from any 3.55 OFW/CFW/MFW
It was tested using a hardware flasher and no bricks or any problems at all were encountered
It can run games signed with Keys up to version 4.21 without any Eboot/Sprx patching needed
Games must be loaded from Disc Icon (with Original game in BD) and not from app_home
Current 3.55 homebrew application can’t be loaded on this CFW, applications must be re-signed properly.
Downgrading back to 3.55 is always possible using hardware flashers and will be tested soon using software methods.
**Credits to eussNL and the PS3DevWiki for the valuable and always up-to-date source of information.
**Credits to Deank for his continuous efforts on Multiman and many other PS3 tools/fixes.
ATTENTION: This CFW doesn’t have LV1 checks disabled and can’t be installed on Downgraded PS3 consoles unless you have Dehashed/Reset Syscon Properly