I recently bought a PSP: it has some problem with the analog stick. When I push it down , very often , it continues in giving the input "down" even when it returns to the rest position: for example, in GTA, if I push it down for just a moment, the character persists in moving down until I make another movement on the stick. That doesn't happen with other direction.
I was wondering to bring my PSP to assistance , but I'm afraid they'll update my 2.50 firmware!!!