. Finding the exact support page for a board of this era felt like digital archaeology. He eventually located the Esonic H61 Micro ATX

Restart your PC and press DEL , F2 , or F10 to enter BIOS setup. The main screen typically shows:

power off the computer during this phase. Once finished, you may need to press to confirm the final update. Troubleshooting and Maintenance

A 32GB or smaller USB 2.0 flash drive, formatted to FAT32 .