How do i clean my psp's analog stick?

Analog stick on psp doesn't work?

• My psp analog stick doesn't work on my downloaded games but it works on the Internet browser. I tried joysen but only works on xmb. I tried the one where u go to system settings and move the stick but doesn't work. Opened my psp and clean stick no luck the stick moves just fine.. Plz help I wanna play my psp If help it's psp 2001 slim

• Answer:

  Try updating your PSP's firmware.