Same server model, tried the BIOS 3B14.02 provided by Gongman66, thanks, already upgraded to 3B14.02 from 3B06 and it works, the steps:
1) Boot by WinPE 11 x64 USB disk
2) Run "BIOS_win64.cmd" directly, it warns "maybe not the right version for this motherboard", anyway, continue to flash...
3) Run "ME_win64.cmd", it flashes normally
4) Reboot
5) The power cycle is one more time than the normal reboot
6) Boot normally, found the previous BIOS setting lost, it has already been set as factory default
7) Config the setting in BIOS and reboot, then it boots into OS normally
Current BIOS main menu:
View attachment 26453