In-Band Manual Recovery Method - Lenovo System x3550 M5 Installation And Service Manual

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 (J13), or in the case of image
corruption, this will occur automatically with the Automated Boot Recovery function.

In-band manual recovery method

Use this information to recover the server firmware and restore the server operation to the primary bank.
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 116.
Step 2. Turn off the server, and disconnect all power cords and external cables.
Step 3. Remove the cover (see "Removing the cover" on page 119).
Step 4. Locate the UEFI boot backup jumper (J13) on the system board.
UEFI boot backup
jumper (J13)
Clear CMOS jumper (J11)
Figure 33. UEFI boot backup jumper (J13) location
Step 5. Move the UEFI boot backup jumper (J13) from pins 1 and 2 to pins 2 and 3 to enable the UEFI
recovery mode.
Step 6. Reinstall the server cover; then, reconnect all power cords.
Step 7. Restart the server. The system begins the power-on self-test (POST).
Step 8. Boot the server to an operating system that is supported by the firmware update package that
you downloaded.
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Lenovo System x3550 M5 Installation and Service Guide
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On
System TPM physical
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NMI button
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