PSNabler does not work

Hiho,

I have a problem with PSNabler v6 final. I used the installer and installed everything: the plugin with the psnabler.txt, the patches and the game.txt. Then I enabled the plugin in the recovery menu and started Little Big Planet (EU). I wanted to go online but it didn't work. Same error as before: Update required ... blabla.
Is there any way to make it work? Did I forget something?
Could somebody help me please?

CFW: 5.50 GEN-D3
PSP: 1000 (PAL)
UMD ISO mode: M33 driver