BIOS Update for Windows 7 (32-bit, 64-bit) - IdeaPad Z370, Z470
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BIOS Update
4acn38ww.exe
5.63MB
3812 Nov 2012
BIOS Update
4acn38ww64.exe
5.88MB
3812 Nov 2012
README of BIOS Update
4acn38ww.txt
2.55KB
3812 Nov 2012
Supported Systems
  • IdeaPad Z370, Z470
Supported Operating Systems
  • Microsoft Windows 7 32-bit, 64-bit
Important Information
  • BIOS, abbreviation of Basic Input/Output System, is integrated in ROM chip on main board, which contains the basic input/output program, system configuration information, system startup self-check and pre-setup programs. BIOS provides most basic low-level hardware operations; it is the connection between software and hardware, and interfacing window of hardware and operating system.

    Note: Make note of any settings you have changed in the BIOS Configuration Utility. These settings may have to be re-entered after updating the BIOS.

    Attention: Do not power off or restart your computer during the BIOS flashing process, which will cause serious damage and improper functioning of your computer.

Updated Information
  • Latest Version BIOS fixs all merged issues from previous.
Downloading the package
  1. Click the file link to download the file from the web page.
  2. When prompted, select a drive and directory in which to save the downloaded file.
Install the package in Windows
  1. Locate the file 4acn38ww.exe or 4acn38ww 64.exe that has been downloaded.
  2. Double click the 4acn38ww.exe or 4acn38ww64 icon.
  3. Click Install.
  4. Click Flash BIOS.
  5. Press Enter to start flashing. During the process, you are advised not to turn off the computer.
  6. When the update finishes, the computer will automatically reboot for the changes to take effect.


If you are unable to find what you are looking for, please do try the following options:
1. Lenovo Assisted Search
2. Product usage and general troubleshooting tips
3. Lenovo Support Forum
4. Technical Support Call Centre

Country Availability
AvailableWorldwide
Document ID : DS032844
Last Updated :
Copyright © Lenovo 2013, all rights reserved
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