I had Veriton X4650G BIOS version R01-A4, I wanted to deploy system through LAN but the computer can't load the system from LAN, Other computer can do it so I searched the Internet and someone suggested to update BIOS. And then I downloaded the Version R01-B1, run afuwinx64.exe r01-b1.8m from Win 10 DOS command, everything looks good but after I rebooted the machine it shows the error boot Guard failed system will shutdown and then it turned off. Every time it started and go there, can't load BIOS even I press F10 or F12 or some other hot keys. How can I recover the old BIOS version? The computer is out of warranty so the hotline didn't support me. I also removed CMOS battery and pugged in a few mins later didn't work.