In-Band Manual Recovery Method - Lenovo 5457 Installation And Service Manual

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
31.
Step 2. Turn off the server, and disconnect all power cords and external cables.
Step 3. Unlock and remove the side cover (see
Step 4. Locate the UEFI boot backup jumper on the system board.
IMM SPI enable
jumper (OVR 1)
UEFI boot backup
jumper (J16)
System TPM physical
jumper (SW1)
Figure 76. Location of the switches, jumpers, and buttons on the system board
Step 5. Move the UEFI boot backup jumper 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.
Step 9. Perform the firmware update by following the instructions that are in the firmware update package
readme file.
"Safety" on page v
"Removing the side cover" on page
Low security jumper (J12)
Clear CMOS jumper
(CLR RTC 1)
and "Installation guidelines" on page
173).
.
Chapter 4 Troubleshooting
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