HX versions

3.72 HX

On November 06 2007, homebrew developer "_HellDashX_" released the 3.72HX-1 custom firmware. This custom firmware was made by reverse engineering Dark~AleX's 3.71 M33-2 and then adapting it to the 3.72 firmware. It contains all features from 3.71 M33-2 except the 1.50 kernel extension, which was released shortly after. Also version 2 called 3.72HX-2 has been released.

3.73 HX

On November 30 2007, "_HellDashX_" issued a statement that 3.73 HX-1 was created and released on December 12, 2007.

This firmware enabled access to the official PSP features and changes, as well the “custom” factor enabling homebrew, etc