after I upgrade psp to 3.40oe-c,3.52m33,3.52mss-4, I got the message "an internal error has occurred", turn to the blue screen in multiple language, click "O" then I was asked to setup name, time zone and date etc. Map this can be start and sats can be fixed in 2 min. The problem is that map this is easy to be crashed, after waking up the psp. I have tried different version PRXs. I really dont know what the problem is.