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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.
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 89.
Step 2.
Turn off the server, and disconnect all power cords and external cables.
Step 3.
Remove the cover (see "Removing the compute node cover" on page 105).
Step 4.
Locate the UEFI boot backup jumper (JP2) on the system board.
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IBM NeXtScale nx360 M4 Installation and Service Guide
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Troubleshooting
