When copying files to a USB drive or SD card, if you receive a— Media is Write Protected —message, then this post will help you resolve the problem. The same problem can occur when deleting a file or ...
Check your USB drive or SD card for a lock switch, and ensure it's set to write. Clear the read-only box in a file's properties to remove write protection from individual files. Use the diskpart ...
I'd plug it back into the buddy's computer and poke around looking to see if there was special software, or maybe windows has an option to turn on something inside it.