Download the latest version of Hexaxis XXI [Click Here]
PC-to-PSP homebrew block puzzle game HexAxis XXI has already come along away. It is one of the more loved creations in the PSP scene and is comparable, if not better, than well-polished homebrew titles No Gravity and Ozone. It was coded by timwillhack and is currently on Update #8.1.
Another developer that goes by the name darksoft took it upon himself to make the game compatible with Team M33's 3.60 custom firmware by coming up with a new Eboot. This particular coder is not all unfamiliar to the game as his own version won a place during the recent Neo Flash Spring Coding Competition.
Aside from the new Eboot, nothing has been changed to HexAxis XXI Update #8.1. darksoft mentioned that if you want to use this, all you have to do is "drop an Eboot that is slim compatible in 3.60 M33. Just replace your old eboot and enjoy". You can refer to this link if you don't have the complete files for Update #8.1.