Yes, Since hardware version 1.4.1, we change eMMC 5.1 chip, the old BIOS is not working, then we update NEW bios platform from AMI to Insyde.
You can not change bios between 2 platform, I mean from AMI to Insyde with UEFI shell.
The only way to change BIOS is to use hardware programer to flash BIOS, that's not easy, need some hardware tech.