[HulkWogan]

Presumably because you would need to go to 6.60 ofw then to 6.60 cfw and then downgrade, I never needed to downgrade my psp's but I would imagine a downgrade from an ofw would not have been possible, could be wrong.


http://wololo.net/cfw4dummies/

Downgrade from 6.60 tutorial-

http://wololo.net/talk/viewtopic.php?f=21&t=12053


A nice simple guide, a monkey could do it, just configure it for your model.