Hi, There!
Strictly following Fernando’s guide, i have just managed to create a working file for GA-B85M-D3PH rev1.1 firmware with bootable nvme
Update your bios to F5 version using Gigabyte’s Tools before modding!
Download: NVME MOD – Google Drive
I flashed it using a formatted FAT32 pendrive and the built-in bios Q-Flash tool.
I’m using a a WD Green SN350 1TB attached to a Generic x4 PCIe3 to M.2 Adapter.
System: Zorin OS 17.3
[test made on the same system version installed on a second ssd]
First time making anything compared to it. Hope it helps! Good Luck