Because Esonic's official global web servers can occasionally be offline or slow, finding the exact ROM file requires caution.

The most common key is DEL , but you can also try F2 , F10 , or Esc immediately after powering on the computer.

The decision to update your Esonic H61 BIOS should not be taken lightly.

Esonic produces several variations of the H61 (e.g., H61FEL, H61FHL, H61DA). Check the physical sticker on your motherboard to ensure you have the exact model name. 2. Checking Your Current BIOS Version

Under no circumstances should you turn off, restart, or unplug the computer during the flashing process. 3. Preparation: Gathering Files

Esonic has produced several iterations of the H61 board (e.g., Esonic H61FNL , H61FFL , H61FHL ). Installing firmware meant for a different variant will brick your board. Step 1: Identify Your Current Motherboard and BIOS Version

Esonic drivers and BIOS updates are often hard to find officially. Archived or alternative motherboard BIOS files (from similar brands) are sometimes used, though this is risky.