A heads up for Gopro users. I'm finding out through experience that SD cards that are not compatible with the Gopro can mess up the camera in ways that I never expected. I don't mean permanently damage the camera but to the point that it may require firmware to be reinstalled. I'm not %100 sure that this is the best way to kick the camera out of its stalled mode, but I didn't have time to do research on it so that's what I did and it worked. Another method that may work is removing the battery which shuts down the stalled camera, powering up without the SD card, then inserting a good/compatible SD card, in that order.
Installing firmware is easy to do with the USB cable that comes with the camera and a file that you can download from the Gopro site. I suggest you download this file in any case and follow the instructions to upgrade the firmware of your camera if you're not sure it has the latest firmware. There are some nice new features which include the ability to film with the camera upside down with the footage coming out right side up. This allows mounting the camera upside down directly under the gun where it doesn't interfere with loading the bands. I'm attaching the instructions for the firmware install/upgrade. I'd attach the file itself as well, it's very small, but Gopro doesn't allow it.
Back to the cards.. When you buy an SD card for the camera don't look at just the size and price. There are different classes which correspond to read/write speed and the Gopro requires a minimum class 4, there are higher classes than 4 too. Still if you get a cheap compatible class SD card you may have gotten a fake one and have problems.



