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    U310 Bios problem

    Discussion in 'Lenovo' started by forsaken123, Mar 27, 2014.

  1. forsaken123

    forsaken123 Notebook Enthusiast

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    So i have a u310 4375 which came with w7 latest bios is 65cn21ww, however out of curiosity i installed the 65cn99ww which is for the u310/410 with windows 8. however its no good as i cant use win 7 now and and some other problem. my main concern is that i happened to be unsucsseful reflashing back to the old bios, and im not sure what to do to get it back. ive tried DOS and by a w8 installation to flash but without sucess, so far only 65cn99ww bios worked, modded or not.
    original.png


    Original stable bios http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS033646

    i was hoping that if someone knew a solution on how to bypass the old bios check or if someone could modify the 21 to be bypassed or forced. never in my life have i owned a computer that cannot install old bioses
     
    forsaken123, Mar 27, 2014
    #1
  2. Jobine

    Jobine Notebook Prophet

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    Tip: You don't need to upgrade your BIOS to upgrade your OS.

    Flashing BIOSes is something i do not recommend doing for the vast majority of users.
     
    Jobine, Mar 27, 2014
    #2
  3. forsaken123

    forsaken123 Notebook Enthusiast

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    i want to downgrade my bios now actually, my mistake upgrading bios, but i wish to revert back to the old bios version, however it doesnt seem possible without modding the bios as it gets denied as invalid image for some reason, problay becuse its and olders version, its the phoenix tiano secure
     
    forsaken123, Mar 31, 2014
    #3
  4. forsaken123

    forsaken123 Notebook Enthusiast

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    files and info

    My current bios is 65cn99ww

    i want to be able to downgrade to 65cn21ww

    it somewhat important becuse i am having alot or issues now.

    -Manufacturer: Lenovo u310
    -Motherboard Model: hm77
    -Bios revision: 65cn99ww
    -Bios Type: Phoenix tiano secure BIOS
    -Bios Download Link: https://dl.dropboxusercontent.com/u/96488545/65cn99ww.exe
    -Old Bios Link: https://dl.dropboxusercontent.com/u/96488545/65cn21ww.exe
     
    forsaken123, Apr 1, 2014
    #4