You can usually find the BIOS file in the support or download section of the website. The first step to update your BIOS is to download the latest BIOS file from your manufacturer's website. Step 1: Download the Latest BIOS File from Your Manufacturer's Website In this article, we will show you how to use Insydeflash Windows BIOS Flash Utility to update your BIOS safely and easily. Insydeflash also has some advanced features, such as backup and restore, secure flash, and silent mode. Insydeflash supports various BIOS formats, such as. Insydeflash is a Windows-based application that allows you to flash your BIOS from within Windows, without the need to create a bootable USB or CD. One of the tools that you can use to update your BIOS is Insydeflash Windows BIOS Flash Utility, which is developed by Insyde Software Corp.