MSI B450M MORTAR User Manual

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BIOS Setup

Updating BIOS with Flash BIOS Button

1. Please download the latest BIOS file that matches your motherboard model from

the MSI® website.

2. Rename the BIOS file to MSI.ROM, and save it to the root of your USB flash drive

(FAT32 format).

3. Connect the power supply to CPU_PWR1 and ATX_PWR1. (No need to install CPU

and memory.)

4. Plug the USB flash drive that contains the MSI.ROM file into the Flash BIOS Port

on the rear I/O panel.

5. Press the Flash BIOS Button to flash BIOS, and the LED starts flashing.

6. The LED will be turned off when the process is completed.

Important

Only the FAT32 format USB flash drive supports updating BIOS by Flash BIOS Button.

To check your drive, go to Windows Explorer, right click on the drive icon and go to

Properties.

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