as requested for discussion, here is a modded/updated version for your particular board.
manual NMVe mod:
The modded BIOS is based on the version 3802 which is the lastest published version for your motherboard.
NOTE the existing Intel ME: 220.127.116.110 should be upgraded to → 18.104.22.1680 updated in ME Region PRIOR to BIOS flashing
Edit Feb 16, 2021
Note the Intel Management Engine version in the photo above!
Further observe the non empty padded files; which implies the NVMe mod should be done using MMTool 4.50.0023.
** Your board should be upgraded to ME 22.214.171.1240 before you update the BIOS. Copy the contents of IntelME.zip to the root of a DOS boot drive, boot from it and run flash.bat
(doing this in advance speeds up the BIOS flashing procedure quite a bit and prevents possible ME version clash issues).
P8Z68-V-PRO-GEN3-ASUS-3802N.rar (4.09 MB)