upgrading the Gigabyte G1.Sniper 3 (rev. 1.0) bios version f7, following @Fernando’s instructions was also successful. upgrade details at [OFFER] Gigabyte G1.Sniper 3 (rev. 1.0) f7 bios NVMe modification .
thanks for the guide @Fernando . another good working board/system extended further its life, despite being immersed in a society that promotes and believes that planned obsolescence is acceptable in a universe with finite resources. oh well.