[verified] — Bios Backup Toolkit

: Supports a wide range of BIOS vendors including AMI, Phoenix, and Award.

: This tool is primarily for dumping (backing up) the BIOS. To restore a backup, you typically need the motherboard manufacturer’s specific flashing utility (like ASUS EZ Flash or Gigabyte Q-Flash) or a physical programmer. bios backup toolkit

However, assuming you are referring to the most common free utilities used to dump BIOS firmware from a running Windows system, here is a comprehensive review. : Supports a wide range of BIOS vendors