Help with Half Byte Loader - Can't Run Patapon 2 Demo

Hey, I'm testing for the Half Byte Loader Exploit (http://forum.romulation.net/index.php?topic=38418.0)
And I can't seem to get the demo of Patapon 2 running. NOT THE SAVE EXPLOIT. The actual game.I tried on both 6.20 OFW and 5.50 GEN-D3, on my PSP 2000 and my buddies Go. I got it to run a few times only on my PSP with OFW. My buddies Go runs the game flawlessly, and maybe one or two homebrew games.Any ideas? It seems to NOT work on 5.50 GEN-d3. I also tested another demo on Gen-d3, doesn't work.
It sometimes works on my PSP 2000s 6.20 OFW, but not always.

It's meant to be used on OFW the exploit, not cfw...Still it's strange the demo is having issues even working on cfw, also did you read the comments?

If you have any issues with getting this to run on your PSP Go, try re-downloading the demo from PSN.

It's for go but worth a shot, use the media go app and see if you can download it, free stuff usually works even on a once hacked psp :)