It did not come with pre-installed software.Ībout two years ago I had a different brand of flash drive (Kodak) that gave me a “unit error” message. I have not reformatted the drive or fiddled with it at all. mp3 they were all put onto the drive in the same manner that I always use. The flash drive works fine on my computer, but it does nothing on my stereo.Īll of the files are. When I put this particular flash drive into my car stereo, it comes back with “Unit Error”. Some even have a mixture of music, video, text and program files, but they all play music in my car stereo without any problem. Some are larger capacity some are smaller. I have several other flash drives full of music.