Follow these STEP BY STEP! You can't go wrong.
Step 1: Update to firmware 6.60. (See Step 3 if you need to know where to put it.)
Step 2: Download 6.60 PRO-B10
Step 3: Place "Recovery" and "Pro" folder in your psp memory stick in the GAME folder.
Step 4: Run Pro Installer on your psp under the Game section.
Step 5: Press X, X, Then Let it Reboot.
Step 6: Remove "Update" folder from the memory stick. (This is never needed again. Keep the other two files there.)
Congrats you have lcfw.
6.60 Update: MEGAUPLOAD - The leading online storage and file delivery service
6.60 PRO-B10: http://www.pspslimhacks.com/wp-conte...10/660-B10.zip