To unlock Memory Stick media, change the position of the write-protect switch. Moving the switch in the opposite direction of the arrow will unlock the Memory Stick media, while moving the switch in the direction will lock it.
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Thanks you so much. So glad you showed a picture on how to unlock the memory card. I tried it & it worked. The picture truly helped. I thought the protecter slider tab was in the camera & not on the actual memory card. But thanks to your very detailed picture, I got it