Gigabyte Z790 EAGLE AX(rev. 1. Fast Networks: 2.5GbE LAN & Wi-Fi 6E 802.11ax. Save it to a USB flash drive formatted in FAT32. Insert the USB flash drive into the Q-FLASH PLUS USB port. STEP 3: Press the Q-FLASH PLUS button, and the motherboard will start updating the BIOS automatically. ).