If you sign into PlayStation Network (PSN) with a jailbroken console running CFW (or even HEN with the wrong syscalls enabled), Sony will detect the modified kernel. The consequence is not a user account ban, but a .
For Slim models (CECH-2xxx and CECH-3xxx), you must check the "Minimum Version" found on the back of the console box or via specific tools.
Go to Settings > System Update > Update via Storage Media. The PS3 will detect your PS3UPDAT.PUP . It will say "System Software version 4.91 (or higher)". Accept the terms. The console will reboot. Congratulations, you have a jailbroken PS3.
Using homebrew or pirated games online can result in a permanent PlayStation Network (PSN) ban. Never go online with your main account while using CFW or HEN. Preparation: Always use a USB drive formatted to FAT32 . 1. Understanding Your Options: CFW vs. HEN
This is where it gets tricky. Sony learned from the Fat models and patched the hardware vulnerability. If you have a Slim (CECH-20xx, 21xx, 25xx) or a Super Slim, you generally cannot install permanent CFW unless you have a specific early serial number.