1)Download preboot.zip from here:
PREBOOT.zip (9.5 MB)
2)extract it and then in the folder exist again a zipped file with the same name (preboot) unzip it also.
3)Go in …\PREBOOT\PREBOOT\APPS\BootUtil and copy BootIMG.FLB in the …\PREBOOT\PREBOOT\APPS\BootUtil\Winx64\ folder
4)open a cmd with admin rights and run install. (cd C:..\PREBOOT\PREBOOT\APPS\BootUtil\Winx64 and target the install bat file))
5)Open again cmd and run: bootutilw64e -up=combo -all -FILE=BootIMG.FLB (run after you target with the cd command the bootutilw64e file)
6)Follow the instructions:
Programming flash on port 1 with flash firmware image
Create restore image of NIC 1 before proceeding? (Y)es or (N)o: Y
Y
Updating PXE+EFI removes PXE functionality.
Would you like to continue? (Y)es or (N)o: Y
Y
/
Flash update successful
Port Network Address Location Series WOL Flash Firmware Version
==== =============== ======== ======= === ============================= =======
1 001B213XXXXX 10:00.0 Gigabit YES UEFI,PXE Enabled 1.5.90
7)restart pc
8)Open a cmd with admin rights and run uninstall. (cd C:..\PREBOOT\PREBOOT\APPS\BootUtil\Winx64 and target the uninstall bat file)
9)You have and intel ct with latest firmware that supports both uefi boot and legacy.