Traditional mods (like PS3Jailbreak dongles from 2010) exploited a USB "failkit" in very early firmware (v3.41). Sony quickly patched that hardware exploit. After that, for years, the only way to run homebrew was a costly, risky hardware flasher (E3 Flasher, Progskeet) to downgrade the console.
The Twilight of the Lockdown: A Technical Analysis of PS3Xploit and the Circumvention of the PlayStation 3 Security Architecture 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. The Twilight of the Lockdown: A Technical Analysis
If you attempt to install CFW on a non-compatible model (like a Super Slim), you will likely "brick" (permanently disable) your console. Always use the PS3Xploit Minimum Version Checker before proceeding. If you attempt to install CFW on a