Memory stick unreadable by psp

• 1 Insert the problematic 4GB Memory Stick Pro Duo into your PSP and turn the system on.
  
• 2 Select "Settings" from the cross media bar and scroll down to "System Settings." Press "X" to access the sub menu and select "Format Memory Stick."
  
• 3 Press "X" to confirm the formatting of the stick. Your PSP will delete any content on the stick and reformat to match how the PSP stores data and organizes files.
  

• Flash Storage:

• Memory Stick PRO Duo Expansion Slot
• Memory Stick Micro Expansion Slot

All flash storage, including Memory Sticks and internal flash, uses the FAT32 file system. http://us.playstation.com/support/answer/index.htm?a_id=1055

The above shows how to format the Memory Stick PRO Duo in the PSP so the correct file structure will be shown.

Be sure to back up any data on the Memory Stick PRO Duo before doing this as all data will be lost on the Memory Stick PRO Duo device.

Hi,

This error refers that your device / media not found (The memory stick may be damaged).
You need to check your memory stick.
Good Luck and have a nice day.

make sure it's not in lock mode. if youre still having problems, you may need to reformat the stick.

Problem for Sony Memory Stick PRO Duo (2GB) for PSP I have a Memory Stick Pro Duo 2GB will not open on pc &also not formated

there or to picture folders on the psp one is in the root of the memory stick and the other you have to open the memory stick then open the folder called PSP

Are you formatting it with your computer or PSP?

1. Push the little HOME button on the bottom left of the face of the unit.
2. Use the arrow keys to move to the SETTINGS area, then move the up and down keys until you get to System Settings.
3. Once you are there, click on the "X" button and scroll up and down as needed to find Format Memory Stick. Click on "X" again to select that option.
4. The Sony PSP will now confirm that you want to reformat the memory stick (which removes every file and game save thereon, of course): choose yes and it'll format in just a few seconds.

It that doesn't work - try formatting it with your computer.

When you reformat a memory stick it creates a trash folder which stores all the data incase you need to use it again. Put your memory stick in your psp then connect your psp via usb to a computer, in the computer view of the momory stick make sure you have the 'view hidden folders' option checked, then delete all folders & files on the stick. Remove the psp from the computer & reformat it again you should find 8gb available again

put a thin sticker on the opposite side of the golden pins and try again

Yes! The Memory Stick Pro Duo's are one in the same. (Just out of curiosity, where are you finding them cheaper?) One note, however; as strange as this is, though the PSP plays mp4s, they will not play mp4s from a memory stick pro duo that comes directly out of your M1 camera... I've tried it, I have both a PSP and an M1. (The PSP will show off your M1 still photos, though.) Hope this helps! Susan