Updating the Z790 Tomahawk BIOS
This page was created with the most up-to-date BIOS versions at the time of publishing (August 16, 2024). A newer BIOS revision may be accessible at the first link below, but may have a different version name than detailed. This guide is still usable for future BIOS updates.
If after updating your BIOS, you're still experiencing issues, please reach out to us via the Contact Form at the bottom of this page.
FLASHING YOUR BIOS
To begin flashing your system BIOS with a USB flash drive, please use a USB-A drive with at least 8GB of storage. Insert it into your computer and visit the website below.
https://www.msi.com/Motherboard/MAG-Z790-TOMAHAWK-WIFI/support
Click Download on the BIOS Version 7D91vHD2
Once done, restart your computer with the flash drive still inserted and press delete repeatedly. You will enter BIOS. Regardless of if you find yourself in EZ Mode or Advanced Mode, M-Flash will be available in the bottom left hand corner of the screen.
Once in M-Flash, your USB drive should be easily accessible and towards the top of the list of connected devices/drives. Locate the filename that matches your BIOS version and name: Note that your USB flash drive’s name in the device and the names of your other drives may not match the images below.
Please make sure that your BIOS version is named 7D91vHD2. The image below uses an older BIOS version, and your motherboard will only accept compatible BIOS versions.
This BIOS update may take up to 10 minutes. It is Extremely important that you do not restart your PC or power it down during this process. Once done, your computer will take you back to BIOS, and may reset your XMP profile. Please re-enable this function to maximize your system’s performance. In the image below, XMP is disabled and the icon will change colors when enabled.
Pressing F10 will save your settings and return you to your operating system. From here your system is ready to run.
