[Solved] Lenovo Legion Y740-15IRH BIOS Recovery

Discussion in 'BIOS Mods' started by Tyroq, Feb 4, 2021.

  1. Daryll James

    Daryll James MDL Novice

    May 9, 2021
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    Hi,

    I have the same problem but with my Lenovo Legion Y540. I can only see solutions for Y740. Can you help me?

    My laptop is experiencing black screen when I am opening it. Power button and keyboards has lights but screen is purely black. It happened after the bios update/downgrade. What would be the possible solution on this?

    I’m planning to buy CH341a 24-25 series. Is that compatible to my laptop?

    Thank you!
     
  2. cptncankles

    cptncankles MDL Novice

    May 14, 2021
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    Hello, new here but not sure exactly what to download for my Windows install.

    You said " Grab programmer CH341a drivers and AsProgrammer from the first." What does this mean? There are several windows drivers and I don't know which one is "AsProgrammer" as I don't see it in the list on the github link but I do see "AVRProgrammer" Is that it? The windows drivers I see are Windows-Printer driver, Windows-SPI-I2C-Driver+SDK, and Windows-Serial-Driver+sdk. Which one do I need? Do I need all 3?

    Also, mine is the y740 17inch IRHg, so not sure if the bios links are the same or not.
     
  3. firefly_can_fly

    firefly_can_fly MDL Novice

    Feb 4, 2018
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    Could you please provide a write up of how you replaced the padding area with the dmi info, I'm very new to this and have the same Laptop/Problem.
    also, Fxxk Lenovo
     
  4. dlhxr

    dlhxr MDL Novice

    Nov 2, 2012
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    After making sure where the DMI is, I replaced with HxD Hex Editor.
     
  5. dlhxr

    dlhxr MDL Novice

    Nov 2, 2012
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    I have a Y540 and the operations are almost the same as Y740. CH341a works.
     
  6. kenlah

    kenlah MDL Novice

    May 29, 2021
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    #46 kenlah, May 29, 2021
    Last edited: May 30, 2021
    Hello. please allow me to join the Y540 brick club. Hahaha.

    My laptop is Y7000 2019 1050, is it the same with Y540?
    Is the Y540 bios labelled?:

    AH1927
    25B127DSI6
    U96302
     
  7. dlhxr

    dlhxr MDL Novice

    Nov 2, 2012
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    Yes, I have the same chip model. The only difference is last 3 digits of U96302. Go ahead and unbrick your laptop
     
  8. Treb1612

    Treb1612 MDL Novice

    Jul 7, 2021
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    Can anyone give me a bin file for y740 17inch,
    I flash my bios successfully but still nothing, not even keyboard light, only the led lights of the icon at the back showed for a few seconds. I do not know what else to do. The IC is 25Q128JVSQ, downloaded the latest bios from Lenovo and did everything to extract the bin file, and successfully flash using neoprogrammer. Any more ideas?
     
  9. Hugh1987

    Hugh1987 MDL Novice

    Jul 25, 2021
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    Question please, I'm trying to locate the bios chip on my Lenovo legion y540 15irh, before getting co fused and doing a deadly mistake.
    Any help will be much appreciated.
     
  10. ecurbbb

    ecurbbb MDL Novice

    Aug 6, 2021
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  11. Hugh1987

    Hugh1987 MDL Novice

    Jul 25, 2021
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    Isn't this CH341a programmer is faulty manufactured? I've seen a video in YT says it produces 5.5 volts output instead of 3.3 vaults which is bad for the chips it mostly burn or destroy them.