Downgrading the firmware on a PlayStation 3 (PS3) is the process of reverting the system software to an earlier version. This can be done for a variety of reasons, such as to fix bugs, restore lost features, or to gain access to homebrew software.
There are a number of different ways to downgrade a PS3’s firmware, but the most common method is to use a software exploit. These exploits take advantage of vulnerabilities in the PS3’s firmware to allow users to install custom firmware. Custom firmware is not authorized by Sony, but it can give users access to a wider range of features and functionality.
