"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) Why does the camera become so hot when it's recording? (YI 4K+ Action Camera) How to upgrade the firmware? How do I update the YI 4K Action Camera firmware version? What is the wide angle view on the YI Outdoor Camera?