How do you remove write protection on sony walkman nwz s544?

To remove write protection on a Sony Walkman NWZ-S544, first, ensure the device is not locked by checking the hold switch on the side; it should be in the "off" position. If the issue persists, connect the Walkman to a computer, navigate to the device in File Explorer, and try to remove any write protection settings in the properties. Additionally, ensure that the device's internal memory is not full, as this can sometimes cause similar problems. If these steps do not resolve the issue, consider resetting the device to factory settings.