Please follow update guideline below

==== Preparation Section ====
1. Prepare an USB key and format it in FAT32 file system with EFI shell
2. Extract BIOS zip file into root folder of the USB key
3. Plug the USB key to the USB port

==== Update Section ==== 
1. Boot up System
2. Boot into UEFI shell
3. Type fs0: to switch to the USB key (suppose the USB key is the only one storage)
4. Execute following command
    FlashAfu.nsh XXX.bin
5. After update finished, please disconnect AC power cord for 10 seconds at least.