Unwrite protect a thumb drive

Hi!

I recently went to a job fair, and a company was handing out some thumb drives. When I went home, I found out that it was full of useless videos, and I wanted to delete them. However, I couldn't delete them, and I am stuck with a drive that is read-only. I have tried to reformat it and whatnot, but I am not able to. The format is MS-DOS (FAT16). Any help would be great!

Thanks!

Does the thumb drive have a write protect switch on it? I have one here at home that has a small (hard to notice) write protect switch on the underside. If that's set, the drive can not be written to.