tutorialsme, do you use a fake MS? Try to load a Recovery Menu(on Google you can try a Recovery usable, search "6.20 TN-D Permanent Patch Recovery") (put it in ms0:/). To start it, hold R at PSP startup. If you can start recovery, you can:
1) Start an EBOOT.PBP like 6.20 TN-D Permanent Patch to uninstall Easy 6.20 DualBoot 2) Connect to USB your PSP to do a way to fix the bug (if it is a bug) 3) Connect to flash0 to manual restore vshorig.prx
EDIT: I mistaked that you have a PSP3000. With your MS (connect it on your PC with a Card Reader), go into ms0:/seplugins/DualBoot and make a screenshot and upload it.
omg!!! this has bricked my psp 3000. it doesnt restore the original vshorig buy pressing circle, x, start and select, i cant go on the recovery menu by holding the right trigger, and if i hold the start button, it will show me a list of cfw, but none of them work, can someone please help me!!! and also i tried putting ultimate recovery menu and it worked by holding the right trigger but theres no point with it. please someone!!!!