"firmware.bin" is on my SD card. Why isn't it updating its firmware?(YI 4K+ Action Camera) Format the SD Card, re-copy “firmware.bin” and try update again. Related articles How to update the firmware? (YI Smart Dash Camera) How to upgrade the firmware? Why does the camera become so hot when it's recording? (YI 4K+ Action Camera) No power. How do I update the YI 4K Action Camera firmware version?