I just bought a sony duo 4g. I put it in the psp and it will not read it.?

Question

the yellow light flashes showing it is saving or loading data but it wont stop. How long does this take? should at least recognize the duo stick?

Answer 1

Try formatting it first using the PSP system formatting options. Also, you may need a later firmware version as earlier version were not compatible with larger Mem Sticks.