lior,
Unfortunately if your player has been hacked, there's no way to get the memory back.
You can either take it back for a refund or format it and use what you have.
Reason why you are getting those errors is because the hacks are causing it. They are designed to 'fake' your computer into displaying more memory than it has so when you try to use it or copy it, it will try to access that hacked or fake area of the file system table and cause errors.
Hopefully the formatting will remove the hacks and get rid of those errors for you.
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