At this point, you can patch the kernel in RAM to disable signature checks on executables. This allows running homebrew .self and .sprx files, but only until the next reboot.
Late "Slim" models (Series 25xx, 30xx) and all "Super Slim" models. Key Benefit: Compatibility with every PS3 model ever made. ps3xploit
PS3Xploit, developed by the ps3xploit_team, shattered this requirement. It utilized a "holy grail" exploit chain that functioned on "Superslim" consoles and official firmware (OFW) versions previously thought secure, provided they were below a specific threshold (typically 4.82/4.84). This marked the definitive end of the PS3’s security era, enabling full ecosystem control without hardware modification. At this point, you can patch the kernel
Sony’s primary defense was the invalidation of old encryption keys. Once a console was updated, it would no longer recognize software signed with older, compromised keys. PS3Xploit bypassed this not by retrieving old keys, but by utilizing a flaw in the software parsing mechanism itself. Key Benefit: Compatibility with every PS3 model ever made
PS3Xploit, like all console exploits, exists in a legal gray area. The code itself is legal to distribute (in most countries) as a tool for security research and running homebrew software (emulators, media players, Linux). However, the primary use case for 95% of users is playing backup copies of games, which often circumvents copyright protection.