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How to update BIOS for ASUS M5A99FX Pro R2.0 motherboard?

Hi there,

I'm buying this motherboard tomorrow so please tell me how to update the BIOS using the USB method.

This is my spec:
AMD fx-6300
ASUS M5A99FX PRO R2.0
Corsair Vengeance DDR3 8 GB (2 x 4 GB) PC RAM (CMZ8GX3M2A1600C9R)
Seasonic S12II 620 Watts PSU.

I know that I need to download BIOS version 1006 but don't know what it should be renamed to and put in which folder... and what is the fuss about .ROM and .CAP BIOS files? Should I be worried about this for my mobo? Also how will I know the current BIOS version on my mobo without connecting it to monitor? Please help! very urgent! Thanks.
15 answers Last reply Best Answer
More about update bios asus m5a99fx pro motherboard
  1. Download the version of the bios you need, and then drop the .cap/ .rom file onto a usb drive. Then head into your BIOS and get to the Flash BIOS option. Select the flashdrive with the new BIOS file on it and click install. Make sure you don't interrupt the flashing process or you may brick your motherboard
  2. P1nnacle said:
    Download the version of the bios you need, and then drop the .cap/ .rom file onto a usb drive. Then head into your BIOS and get to the Flash BIOS option. Select the flashdrive with the new BIOS file on it and click install. Make sure you don't interrupt the flashing process or you may brick your motherboard


    Is that it? The BIOS file I downloaded has .CAP extension. Thanks for the reply! This is my first build so I want to make sure.
  3. Best answer
    The current bios for that board is 1903. You're probably referring to the USB bios flashback that lets you flash the bios without booting in...It will be detailed in the mobo manual, or if you want to get a leg up before the board comes, here's the manual online, go to section 2.2.1, it has what you need:

    http://dlcdnet.asus.com/pub/ASUS/mb/SocketAM3+/M5A99FX_PRO_R20/E8043_M5A99FX_PRO_R2.pdf
  4. pKal said:
    P1nnacle said:
    Download the version of the bios you need, and then drop the .cap/ .rom file onto a usb drive. Then head into your BIOS and get to the Flash BIOS option. Select the flashdrive with the new BIOS file on it and click install. Make sure you don't interrupt the flashing process or you may brick your motherboard


    Is that it? The BIOS file I downloaded has .CAP extension. Thanks for the reply! This is my first build so I want to make sure.


    Yes the .CAP file is your BIOS file. You can find more detailed instructions for flashing the BIOS in your manual.
  5. Jaxem said:
    The current bios for that board is 1903. You're probably referring to the USB bios flashback that lets you flash the bios without booting in...It will be detailed in the mobo manual, or if you want to get a leg up before the board comes, here's the manual online, go to section 2.2.1, it has what you need:

    http://dlcdnet.asus.com/pub/ASUS/mb/SocketAM3+/M5A99FX_PRO_R20/E8043_M5A99FX_PRO_R2.pdf


    Please tell me if this is the correct procedure because the manual says no OS required in the beginning and then asks to install USB Flashback wizard from the mobo DVD - it is confusing:
    - Place the BIOS file (.CAP) into flashdrive.
    - Rename it to M5A99FX.CAP
    - Stick it to the proper port and press the flashback button for 3 seconds till it blinks. (with powered on of course)

    Thanks for the reply!
  6. pKal said:
    Jaxem said:
    The current bios for that board is 1903. You're probably referring to the USB bios flashback that lets you flash the bios without booting in...It will be detailed in the mobo manual, or if you want to get a leg up before the board comes, here's the manual online, go to section 2.2.1, it has what you need:

    http://dlcdnet.asus.com/pub/ASUS/mb/SocketAM3+/M5A99FX_PRO_R20/E8043_M5A99FX_PRO_R2.pdf


    1903 is greater than 1006, does that mean I don't have to update the BIOS? If I have to then please tell me if this is the correct procedure because the manual says no OS required in the beginning and then asks to install USB Flashback wizard from the mobo DVD - it is confusing:
    - Place the BIOS file (.CAP) into flashdrive.
    - Rename it to M5A99FX.CAP
    - Stick it to the proper port and press the flashback button for 3 seconds till it blinks. (with powered on of course)

    Thanks for the reply!


    If you are purchasing the board new then it should come with the latest BIOS.
  7. From my understanding those steps should work just fine...it's interesting the site says you need 1006 for newer Vishera CPU's when 1006 isn't available to download...i'm guessing the board will ship with a recent enough version to use one, but the flashback should do the trick if not, just use the newest bios.
  8. The best thing you can possibly do is NOT flash the BIOS unless there is a specfic reason you need to, such as compatibilty with a piece of new hardware. Your BIOS is an excellent example of the old saying "if it aint broke, dont try to fix it" things can only go downhill if you dont absolutely need the update.
  9. jitpublisher said:
    The best thing you can possibly do is NOT flash the BIOS unless there is a specfic reason you need to, such as compatibilty with a piece of new hardware. Your BIOS is an excellent example of the old saying "if it aint broke, dont try to fix it" things can only go downhill if you dont absolutely need the update.

    Absolutely... If it is more than 1006 then I have no problem at all. I'll let you guys know how it goes tomorrow and select the best answer, thanks for all the replies!
  10. good luck
  11. I did not have to update BIOS... it was more than 1006 when I bought it.. Thanks for the replies!
  12. pKal said:
    I did not have to update BIOS... it was more than 1006 when I bought it.. Thanks for the replies!


    hey. hope everything turned out fine. one quick question brother. i have the asus M5A99FX PRO R2.0 and the amd fx 6300 combo like you as well. coupled with an amd 7970. but i get very bad performance iv tried switching with an nvidia gtx 760 OC, but still get bad performance. like in tf2 i get not over 90 fps and in far cry 3 i geet about 30-40 fps. please tell me if you experienced this and if you have a fix. thankyou =)
  13. josemaria said:
    pKal said:
    I did not have to update BIOS... it was more than 1006 when I bought it.. Thanks for the replies!


    hey. hope everything turned out fine. one quick question brother. i have the asus M5A99FX PRO R2.0 and the amd fx 6300 combo like you as well. coupled with an amd 7970. but i get very bad performance iv tried switching with an nvidia gtx 760 OC, but still get bad performance. like in tf2 i get not over 90 fps and in far cry 3 i geet about 30-40 fps. please tell me if you experienced this and if you have a fix. thankyou =)


    Sorry man.. i do not have any issues with the build. I have gtx 660 OC 2GB. If you think yours is not up to the mark, then i suggest you start a new thread so that you get more replies. I'm sure you already did but just a suggestion.
  14. pKal said:
    Jaxem said:
    The current bios for that board is 1903. You're probably referring to the USB bios flashback that lets you flash the bios without booting in...It will be detailed in the mobo manual, or if you want to get a leg up before the board comes, here's the manual online, go to section 2.2.1, it has what you need:

    http://dlcdnet.asus.com/pub/ASUS/mb/SocketAM3+/M5A99FX_PRO_R20/E8043_M5A99FX_PRO_R2.pdf


    Please tell me if this is the correct procedure because the manual says no OS required in the beginning and then asks to install USB Flashback wizard from the mobo DVD - it is confusing:
    - Place the BIOS file (.CAP) into flashdrive.
    - Rename it to M5A99FX.CAP
    - Stick it to the proper port and press the flashback button for 3 seconds till it blinks. (with powered on of course)

    Thanks for the reply!


    QUESTION, for this thread, when doing this usb bios flash, should i take my ram out before hand?
  15. Where can you see your bios version? I have the same motherboard and i want to update it.
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