I am unable to see all the files that are on my m250 MP3 player. I am able to ok, but when I connect to the computer it only lists part of the files. Therefore i am unable to delete or manipulate any of the hidden files.
Your computer can only “see” the files that were transferred in the same USB mode as it is connected in at the moment. Therefore, if you transferred some in MTP mode, you can only see the files that were originally transferred in that mode. You will not be able to see any that were transferred in MSC, and vice-versa.
If your player is set to the infamous Auto mode, it can connect in either mode at will (and without your knowledge) so this can cause this type of confusion.
