Download Lenovo G40-70/G50-70 BIOS Update 9ACN25WW

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To start downloading Lenovo G40-70/G50-70 BIOS Update 9ACN25WW, please choose one of the links from the list below.

  1. G40-70, G50-70 BIOS Update 9ACN25WW: 9acn25ww.exe
  2. G40-70, G50-70 BIOS Update 9ACN25WW Read Me

Install the package in Windows

  1. Plug in AC adapter and battery, make sure the battery capability more than 30%.
  2. Locate the file 9ACN25WW.exe that has been downloaded.
  3. Double click the 9ACN25WW.exe icon.
  4. Click [OK] when popup a caution dialog.
  5. The system will reboot automatically,then enter flash bios process.
  6. During the process, you are advised not to turn off the computer.
  7. When the update finishes, the computer will automatically reboot for the changes to take effect.
  8. If the hot key not work without Fn key after flash BIOS, this SOP describes how to enable hot key mode
    1. Step 1: Press power button to boot, then press F2 key enter BIOS setup.
    2. Step 2: Select sub menu to Configuration
    3. Step 3: Select to Hotkey Mode item and then press enter
    4. Step 4: Select Enabled then press enter
    5. Step 5: Press F10 save and exit, then select Yes then press enter.

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If you have found mistakes during downloading, please email to We will endeavour to solve these as soon as possible. Other problems, please try to contact publisher's official support.

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