Degrading withou a pandora, possible?
I got my psp updated (not 6.10 tohugh) and ran it in chickHen...
Then i used HeliCat's recovery flasher to install an older C-firmware (3.71)
And IT WORKED!!! 1 problem though.. My PSP turned on i could see the wallpaper and the time, battery life... but no icons.. So i went to the recovery and reset (or format) my flash1. And everything was fine..
And now My PSP works perfectly..