yeah, i mean that the installer (quickly) exiting although i press x to install, or press L to reinstall. i have tried to re download the hack, no result. I have tried another version of the hack, same result.I think I found your problem:Run the PROUPDATE file, what does it tell you?
When i launch the PROUPDATE i see the hack in action for a very little time, than PSP restarts..
Uploaded short video to see hack in action
http://videobam.com/IbOtV
So basically, you were accidentally exiting the installer, meaning that you weren't installing the hack. Make sure you press 'X' to install. After that, some text will appear under it and launch back into the XMB. To ensure you have hacked successfully, try pressing select (the VSH menu should come up). Also check Settings > System Settings > System info to see if it says 6.20 PRO-B10.
Thanks for helping