Lenovo ThinkServer TS140 User Manual
Page 40
System programs are the basic layer of software built into your server. System programs include the POST,
the UEFI BIOS, and the Setup Utility program. The POST is a set of tests and procedures that are performed
each time you turn on your server. The UEFI BIOS is a layer of software that translates instructions from
other layers of software into electrical signals that the server hardware can execute. You can use the
Setup Utility program to view or change the configuration settings of your server. See “Using the Setup
Utility program” on page 21.
Lenovo might make changes and enhancements to the BIOS. When updates are released, they are available
for download on the Lenovo Web site at
You also can use the Firmware Updater program to help you keep the server firmware up-to-date. See
“ThinkServer EasyUpdate Firmware Updater” on page 12.
Updating (flashing) the BIOS
This topic provides instructions on how to update (flash) the BIOS.
Notes:
• Update the BIOS on your server only if the newer BIOS version specifically solves a problem you have.
We do not recommend BIOS updates for servers that do not need them. You can view the updated
information for the new BIOS version in the installation instructions for the BIOS update package.
• Downgrading the BIOS to an earlier version is not recommended and might not be supported. An earlier
BIOS version might not support the latest system configurations.
• If the power to your server is interrupted while the POST and BIOS are being updated, your server might
not restart correctly. Ensure that you perform the BIOS update procedure in an environment with a
steady power supply. Besides, ensure that your server can restart successfully without encountering
hardware problems.
• If you have updated the BIOS firmware, all the BIOS settings become the default settings of the updated
BIOS version. You need to check and reconfigure the BIOS settings for your specific needs. You
also can record your specific BIOS settings before updating the BIOS for an easier reconfiguration in
the new BIOS version.
To update (flash) the BIOS, do the following:
1. Go to and follow the instructions on the Web page to locate the BIOS
update package.
2. Download the BIOS update package and the installation instructions in a TXT file.
3. Print the TXT file that contains the installation instructions and follow the instructions to update (flash)
the BIOS.
4. Check and reconfigure the BIOS settings for your specific needs based on your note or refer to “Using
the Setup Utility program” on page 21.
Recovering from a BIOS update failure
If the power to your computer is interrupted while the POST and BIOS is being updated, your computer
might not restart correctly. If this happens, perform the following procedure to recover from the POST and
BIOS update failure. This procedure is commonly called Boot-block Recovery.
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the server cover” on page 39.
3. Locate the Clear CMOS /Recovery jumper on the system board. See “Locating parts on the system
4. Remove any cables that impede access to the Clear CMOS /Recovery jumper.
28
ThinkServer TS140 User Guide