UEFI-Shell EC Firmware Update SOP 

Update EC firmware (use tools ifux64.efi and ecpweoffx64.efi)
a. Prepare a blank USB drive, unzip all files to USB drive.
b. Plug-in AC power.
c. Boot up machine, press F7 key to call boot device menu.
d. Choose ˇ§UEFI: Build-in EFI Shell to enter UEFI-Shell environment.
e. Type ecflash to start EC firmware update.
f. Power off system when the update is finished.
g. Plug off AC power, wait for 5 seconds then plug in AC power.
h. Power on system, enter CMOS to check the EC version.

