Jak and daxter: Last Frontier..not working on PSP

I've downloaded Jak and Daxter: Last Frontier and tried to run it on my PSP with Pandora battery and all. Still, it doesn't work. I've read something about changing the options but, I don't knowI'm new to it. Is there a tutorial that can show me the necessary way to cahnge things? Or does someone know how to get this running? As far as I know form my set up..settings are: 4.01 M33 and 5.00M33, version 5.00, the UMD mode is m33 driver -no umd- Sorry if Im leaving something out. Still new to me.**Side note..On some ISO's Im getting a 800231c error message (Any ideas ??)HoustonTX224

Replying to #1

You can change the settings by pressing the 'Select' button on your PSP while in the PSP main screen (XMB)
As far as I know though, only DBZ:TTT requires that you move the setting...
If the 'vsh' menu is not enabled, you can go to the 'Recovery Menu' and enable it...
To go to the recovery menu:
-Turn your PSP off completely (hold shutdown switch)
-Turn it on while holding the R trigger
-Go to Configuration> Use VSHmenu
-Enable it so it says (currently: VSHMenu)You probably don't have the latest update installed...
Prometheus4 enables you to play all of the latest games, up to 6.20...
It also fixes some thing on older games...

LINK: Prometheus 4

There is a bug and it won't play on GEN-D3-2. There is a patch for it.
But it'll work on 6.35 or 6.37 CFWs.

Downloaded it, and played it...
Works on Prometheus4...
It's strange, the site said to put it on 9600 and it worked...
I then took it off later, and it still worked...