Lenovo x3550 M4 Installation And Service Manual page 193

Table of Contents

About this task

To recover the server firmware and restore the server operation to the primary

bank, complete the following steps:

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.

Figure 93. UEFI boot backup jumper (JP2) location

5. Move the UEFI boot backup jumper (JP2) from pins 1 and 2 to pins 2 and 3 to

enable the UEFI recovery mode.

6. Reinstall the server cover; then, reconnect all power cords.

7. Restart the server. The system begins the power-on self-test (POST).

8. Boot the server to an operating system that is supported by the firmware

update package that you downloaded.

9. Perform the firmware update by following the instructions that are in the

firmware update package readme file.

10. Turn off the server and disconnect all power cords and external cables, and

then remove the cover (see "Removing the cover" on page 36).

11. Move the UEFI boot backup jumper (JP2) from pins 2 and 3 back to the

primary position (pins 1 and 2).

Chapter 4. Troubleshooting

Troubleshooting