The ASUS TUF Gaming Z790-Plus WiFi BIOS update refreshes the motherboard firmware that initializes hardware and manages essential system settings before Windows starts. Unlike a network driver, this ASUS update does not directly enable Wi-Fi or Ethernet; it may improve hardware compatibility, stability, or security, depending on the release notes.

Key Features

• Hardware compatibility updates: BIOS releases may add support for additional processors or improve compatibility with certain memory configurations. Check ASUS’s CPU support information for the required BIOS version.
• System stability improvements: Firmware revisions can address specific startup, hardware initialization, or reliability issues documented by ASUS.
• Firmware-level fixes: Depending on the version, an update may include security corrections or processor microcode changes.
• UEFI configuration support: The BIOS provides access to boot priorities, memory profiles, fan controls, and other motherboard settings. Updating may reset customized options to their defaults.

How to Install

1. Confirm the exact motherboard model. Verify that your board is the ASUS TUF Gaming Z790-Plus WiFi, including any model suffix. Do not use firmware intended for a similarly named board or a different memory variant.

1. Download and review the correct BIOS package. Obtain the update from ASUS’s official support resources and read its release notes and installation instructions. Check for prerequisite updates or additional firmware requirements before proceeding.

1. Prepare the system and USB drive. Back up important files, record your current BIOS settings, and save your BitLocker recovery key if encryption is enabled. Suspend BitLocker protection as appropriate before the update. Extract the BIOS package and place the required file on a USB drive formatted as directed by ASUS.

1. Run the firmware update utility. Restart into the UEFI BIOS and open ASUS EZ Flash, following your motherboard manual. Select the extracted BIOS file and confirm the update. Keep power connected and never shut down or reset the computer while flashing is underway.

1. Check settings after restarting. Confirm the new BIOS version, review boot and memory settings, and restore any necessary configuration. Resume BitLocker protection once the system is working normally.

For systems running Windows 11 or Windows 10, verify driver availability separately from BIOS compatibility. Windows 8 and Windows 7 should not be assumed supported on this motherboard simply because firmware can be updated independently of the operating system. For connectivity problems, look for the matching Wi-Fi, Bluetooth, or Ethernet driver rather than treating a BIOS update as a network-driver replacement.

Common Issues and Fixes

• BIOS file not detected in EZ Flash/BIOS Flashback: Confirm the file matches the exact model (TUF GAMING Z790-PLUS WIFI), extract it from ASUS’s ZIP, place the `.CAP` in the USB root, and use FAT32. For Flashback, rename it exactly as ASUS specifies and use the correct rear port.
• Update fails or stalls mid-flash: Use a stable PSU and a small USB 2.0 drive, remove overclocks, disconnect extra USB devices, and avoid Windows-based flashing tools if the system is unstable.
• Version conflict or rollback blocked: Newer BIOS may block downgrades or require matching Intel ME firmware. Check the current version in BIOS, update to the latest ASUS release, and only use Flashback with an approved BIOS for this board.