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
Use this information to recover the server firmware and restore the server
operation to the primary bank.
About this task
To recover the server firmware and restore the server operation to the primary
bank, complete the following steps:
Procedure
1. Read the safety information that begins on “Safety” on page vii and
“Installation guidelines” on page 33.
2. Turn off the server, and disconnect all power cords and external cables.
3. Remove the cover (see “Removing the cover” on page 36).
4. Locate the UEFI boot backup jumper (JP2) on the system board.
5. Move the UEFI boot backup jumper (JP2) from pins 1 and 2 to pins 2 and 3 to
enable the UEFI recovery mode.
Figure 93. UEFI boot backup jumper (JP2) location
180 IBM System x3550 M4 Type 7914: Installation and Service Guide
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