Download the firmware file, unzip it and then rename it to firmware.bin
Power off the Yi Sports Camera
Copy the file to the top level folder / root of a microSD card and then place that into your Yi Sports Camera
Connect the Yi camera to a power source that is turned on (very important – if the camera dies during this process you have got a dead Yi!!)
Turn on the Yi
You will now hear a constant beeping for around a minute – after this the red light will flash and the camera will turn off.
Remove the microSD card and place back into a PC and ensure that you delete the firmware.bin file
Place the camera back in your card and start to enjoy camera