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ASUS Prime Z390-A backroll fail need rom to 25X05CLNIG Winbond chip

Discussion in 'Asus' started by Gamer, Jul 13, 2022.

  1. Gamer

    Gamer New Member

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    Hi guys. First, Sorry for bad english.
    I have ASUS Prime Z390-A mobo.

    So the bios was the newest on the board ver.2004. I flashed back to 1201 officially in the bios with EZ FLASH. So i wanted to back more to 1005 bios, the EZ FLASH noticed me "this is not a valid bios". Why i can't go back more? Why not valid bios? Why bios allows the flash back to 1201 and can't go back to 1005?
    Created the pendrive with 1005 bios,afudos. Flashed sucessfully. After restart there is no picture, no beep sounds. USB-s not working, just fan spinning and onboard lights works. I tried remove battery, clear RTC. The notification leds not working. So the mobo is bricked now and can use only paper weight?

    What are the possibilities to save this mobo?
    Replace bios chip with an other one?

    I have a programmer CH341A so i checked the "BIOS" chip, and want to flash a new rom with asprogrammer. AS programmer says the chip size is 65536 byte and bios size is 16MB. Tried to flash but can't "file size larger than IC size". So am i wrong or this is not a bios chip? Why only 65536 byte this chip? IC already erased, now worse than before, can't power on the mobo.
    Possible to get the same mobo and extract the rom from the chip and write back to my mobo? I remember back first saved the rom from this chip i get a 64KB bin, i think is not a good size for it and something's wrong. Not supported by CH341A ?
    I'm clueless :((
    Pls tell me the mobo is savable.

    it's not a bios chip?: https://i.imgur.com/ms4HDqQ.png
    as programmer info: https://i.imgur.com/iC3d05X.png
     
    Last edited: Jul 13, 2022
  2. Gamer

    Gamer New Member

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    So anybody have this motherboard can save the bin file from this chip, only 64KB, i found the real bios chip (25B127DSIG , GIGADEVICE CHIP) next to the battery.
     
  3. Gamer

    Gamer New Member

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    Found a rom to this chip, and flashed to my mobo. Now works perfectly.
     

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