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.
1- This CFW doesn't have LV1 checks disabled and can't be installed on Downgraded PS3 consoles unless you have Dehashed/Reset Syscon Properly (if you're not sure about your PS3, Dehash it anyway to avoid any risk) Link ----> Dehashing Tutorial
2- Always make a NOR/Nand dump using multiMAN or memdump before installing this CFW to have a recovery backup in case of any bricks.Having a valid NOR/Nand dump is an essential step before upgrading, because you will always have a way to recover (using hardware flashers) when you have a valid dump.
** A Hardware Flasher alone without a valid dump cannot fix your bricked PS3 **
3- It's always better to have QA flag set (leave it Enabled) on your PS3 for safer upgrading/downgrading operations. Link ----> toggle_qa.pkg
4- Always use the Recovery Menu while installing this CFW to avoid possible bricks (XMB update works, but Recovery Menu is safer).
5- TrueBlue CFW users must update back to OFW3.55 before installing this CFW to avoid possible bricks.
**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.