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• Address jumpers, terminators, and cabling
• Software versions and levels
• Diagnostic program type and version level
• Configuration option settings
• Operating-system control-file setup
See Appendix D "Getting help and technical assistance" on page 1147 for information about calling Lenovo
for service.
Recovering the server firmware (UEFI update failure)
Use this information to recover the server firmware.
Important: Some cluster solutions require specific code levels or coordinated code updates. If the device
is part of a cluster solution, verify that the latest level of code is supported for the cluster solution before
you update the code.
If the server firmware has become corrupted, such as from a power failure during an update, you can
recover the server firmware in the following way:
• In-band method: Recover server firmware, using either the boot block jumper (Automated Boot
Recovery) and a server Firmware Update Package Service Pack.
• Out-of-band method: Use the IMM2 web interface to update the firmware, using the latest server
firmware update package.
Notes: You can obtain a server update package from one of the following sources:
• Download the server firmware update from the World Wide Web.
• Contact your Lenovo service representative.
To download the server firmware update package from the World Wide Web, go to
http://www.lenovo.com/support.
The flash memory of the server consists of a primary bank and a backup bank. You must maintain a bootable
UEFI firmware image in the backup bank. If the server firmware in the primary bank becomes corrupted, you
can either manually boot the backup bank with the UEFI boot backup jumper (JP2), or in the case of image
corruption, this will occur automatically with the Automated Boot Recovery function.
In-band manual recovery method
This section details the in-band manual recovery method.
To recover the server firmware and restore the server operation to the primary bank, complete the following
steps:
Step 1.
Read the safety information that begins on "Safety" on page v and "Installation guidelines"
on page 35.
Step 2.
Turn off the server, and disconnect all power cords and external cables.
Step 3.
Unlock and remove the left-side cover (see "Removing the left-side cover" on page 40).
Step 4.
Locate SW4 on the system board.
Step 5.
Change the position of the UEFI boot backup switch (change switch 1 of the SW4 to the on
position) to enable the UEFI recovery mode.
.
Chapter 4
Troubleshooting
163
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Table of Contents
Troubleshooting
