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  1. #1
    New ROGer Array
    Join Date
    Oct 2020

    Flashing Bios On Z390 and Z490

    Hello All,

    My friend and i are both doing new builds this weekend one has a Prime Z390-A and other is a Strix 490-A.

    I have never did a Bios update before, but been looking into it there seems to be multiple ways to do it and many varying opinions.

    My questions are is it necessary to do this, and if so is it the very first thing that is done when posting before the windows install?

    As for methods what is the safest way, Using a USB with the latest version from Asus website and running it that way through the bios, or the Z490 has a Bios button on the back with USB, or simply the online option.

    Sorry for rookie questions but i dont want to end up crashing either of our setups and it seems like a risky process.


  2. #2
    ROG Guru: Orange Belt Array Braegnok PC Specs
    Braegnok PC Specs
    MotherboardAsus Crosshair X670E Gene
    ProcessorAMD Ryzen 9 7950X
    Memory (part number)F5-6000J3040G32GX2-TZ5N
    Graphics Card #1AMD Radeon RX 7900 XTX
    MonitorAsus Swift PG27AQN
    Storage #1SK Hynix Platinum P41 2TB
    CPU CoolerOptimus AM5 Foundation
    CaseLian Li 011 Dynamic EVO
    Power SupplySeaSonic Prime TX-1600
    Keyboard Das Keyboard 4 Ultimate
    Mouse G502 Lightspeed
    Headset SteelSeries Arctis Pro
    OS Windows 11 Pro
    Braegnok's Avatar
    Join Date
    Nov 2019

    Personally on a new build I use another PC, and 2-GB USB drive. Insure USB drive is empty, go to new motherboards product page, Driver & Tools, download the LAN driver onto the USB drive and set aside till after I install Windows on new build, you will be fine installing Windows with factory BIOS, running in default settings.

    After installing Windows I put in LAN driver, and install all Windows updates than go back to motherboard product page and download latest BIOS onto empty USB drive, rename the BIOS file using BIOSRenamer, restart into BIOS and I use the USB drive option just scroll down files and click on the CAP file you installed on your USB and you should be good.

    I have used the internet option a few times successfully but had issues several times, also I have used the Flash button on rear IO with USB in designated slot a few times successfully also but had issues several times,.. I never had any issues using USB option in BIOS when updating, so that is my go to method as it's simple & quick and so far 100% successful on dozens of new builds.

  3. #3
    ROG Guru: Grand Master Array Arne Saknussemm PC Specs
    Arne Saknussemm PC Specs
    Laptop (Model)Laptop?...No way! (Model?...Jun Amaki...yes way!)
    ProcessorTHREADRIPPER 3960X
    Memory (part number)TXBD48G4000HC18FBK
    Graphics Card #1GTX Titan X
    Graphics Card #2SLI is dead to me
    Graphics Card #3Tri SLI is even dead to Nvidia
    Graphics Card #4Quad SLI is dead to everybody especially my credit card
    Sound CardXonar Essence STX
    MonitorASUS ROG Swift PG279Q
    Storage #1Samsung 970/960/950 PRO
    Storage #22x OCZ VERTEX 3/2x WD Caviar Black 500GB / 2x WD RED 2TB/Samsung 1TBSSDs
    CPU CoolerCustom Loop: Dual D5s, Dual Alphacool Monsta 480s, XSPC Raystorm Neo TR4, EK TitanX WaterBlock
    CaseNope!...Dimastech Easy XL...let it all hang out man!
    Power SupplySeasonic 1000 Platinum
    Keyboard Corsair Strafe MK2 ROG Claymore... or Fender Rhodes Electric Piano (MKI 73)
    Mouse Corsair M65Pro or Speedy Gonzalez...not Mickey...don't do Disney!
    Headset ...firmly on neck
    Mouse Pad Mouse don't got his own pad man...lives with me
    Headset/Speakers Edifier Spinnaker...or you mean the speakers in my too many voices to name them all
    OS Win XP, 7, 8, 8.1 and Windows 10 Spyware Edition
    Network Router56k modem
    Accessory #1 Umm...nice tie?
    Accessory #2 Err...belt?
    Accessory #3 3 accessories?! I'm not a girl!!
    Arne Saknussemm's Avatar
    Join Date
    Apr 2012

    If the board supports it "BIOS Flashback" method is the most reliable ....followed by EZ Flash utility in BIOS

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