Another problem has been discovered with the newest generation of the GoPro action cameras. They fry the 64 GB MicroSD cards, not only erasing all material contained on them but also rendering the cards totally useless. Better brand cards do get replaced in warranty but that’s more consolation, not solution.
Recently I came across an interesting firmware error when I took for a test run one of the latest Hero3 Black models in the popular GoPro camera line. It’s not a serious problem, but when met for the first time expect your eyebrows to rise!