I have several files on my SD card that I can neither delete nor rename. They have single character filenames that look to be non-English characters, and I have no idea how they got there or how to get rid of them. They only show up when I view files with Resco Explorer (as opposed to the built-in explorer), and seem removable when I do a soft reset. Any idea what these are?

Corrupted Files. Try a scandisk first but if that doesn't work reformat the card.

    

well, they might be system files for the sd card. thats probably why they are hidden (the reason you cant see them in the regular file explorer).