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    Downgrade BIOS

    Discussion in 'Windows OS and Software' started by Geos1, Nov 15, 2011.

  1. Geos1

    Geos1 Notebook Geek

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    Hi. I have the dell inspiron 15r n5110. I wish to downgrade my bios but the installation file says "Dell does not recommend installing older bios version". How can i bypass this?
     
    Geos1, Nov 15, 2011
    #1
    visuddha likes this.
  2. ratchetnclank

    ratchetnclank Notebook Deity

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    is there a blind flash install that can be run from dos?
     
    ratchetnclank, Nov 15, 2011
    #2
  3. Geos1

    Geos1 Notebook Geek

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    The bios file is .exe.
     
    Geos1, Nov 15, 2011
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  4. woofer00

    woofer00 Wanderer

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    Downgrading a BIOS file can be risky because updated versions may or may not update the entire BIOS image. If they don't, you could end up with inconsistencies that will force you to figure out how to replace an EEPROM. That's why every BIOS flash file comes with a warning that basically says "if it ain't broke don't fix it".
     
    woofer00, Nov 15, 2011
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  5. JOSEA

    JOSEA NONE

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    Woofer is spot on. I worked on dells in the 1990's till 2007 and did brick one or two by trying to install an older BIOS.
    Geos1 what issue are you trying to solve ?
     
    JOSEA, Nov 15, 2011
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  6. Geos1

    Geos1 Notebook Geek

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    After i installed newer BIOS system noise went down but temps rose. Thats why i want to revert. Is there a way to reset BIOS?
     
    Geos1, Nov 15, 2011
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  7. Gracy123

    Gracy123 Agrees to disagree

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    I was able to downgrade the BIOS on my VAIO couple of times while experimenting - I just used the older .exe which downgraded - no questions asked. HOWEVER, the last time I attempted that, my HDD was no longer recognized!!! It cost me a sleepless night to recover - I'd never play with BIOS again! Really not recommended!
     
    Gracy123, Nov 15, 2011
    #7
  8. Geos1

    Geos1 Notebook Geek

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    I ended up doing it. I booted from USB using dos and ran it from there using the /forceit command.
     
    Geos1, Nov 17, 2011
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  9. kity54

    kity54 Newbie

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    People need to know how I can dowgradear a bios, I can not find the old model and no model bios to do so, the probe q biosagentplus but you have to pay the program! Anyone have any idea?

    Tipo de bios: Phoenix
    Version del bios OEM : MPPNV10A.86A.0020.2010.0628.1720
    Bios version ID :1.04EXO-None.
    Nombre del motherboard: Intel Corporation Intel powered Classmate PC

    Exo is a government school that delivered to the school, supposed to have a modified bios running a small program in the MBR that could check the certificate without having the chip "TPM" that both claim to have

    I Argentino
     
    kity54, Nov 18, 2011
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  10. JOSEA

    JOSEA NONE

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    Kity54 what make and model computer do you have?
     
    JOSEA, Nov 18, 2011
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  11. kity54

    kity54 Newbie

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    EXO x352 School and commercial EXO x355
     
    kity54, Nov 18, 2011
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  12. visuddha

    visuddha Newbie

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    can you explain me how you did downgrade from A11 to A09?
     
    visuddha, Jul 31, 2014
    #12