Memory Stick PRO Duo is write protected

I had this problem and figured out a easy fix.

1. Take out memory stick from psp
2. Plug in usb to psp and start usb connection
3. Psp will recongnize there is no memory stick inserted
4. Now insert your memory stick and your good to go

For some reason you might have to repeat these steps everytime you want to access your memory stick.

Hope This Helps

This is a little bit complicated problem you have two options .
1.connect your memory card to computer and follow these steps.
a. go to my computer
b. then right click and select manage
c.then select disk management which comes under storage of manage
d.when you connect your memory card you can see its file system and other details there.
e.select your memory card there and click right click on it
f. and select format there. and opt for full format.
if this is not possible, then you have only one easy way claim replacement under warranty. for claiming warranty ,contact your memory cards nearest service dealer and ask him for replacement under warranty.