Using The Ibmc Boot Block Write Protect Jumper (J1A4) - Intel X38ML User Manual

4. Close the server system and reconnect AC power and power up the server.
5. Perform the standard iBMC firmware update procedure as documented in
README.TXT file that is included in the given BMC Firmware Update package.
6. After successful completion of the firmware update process, the firmware update
utility may generate an error stating that the iBMC is still in update mode.
7. Power down and remove AC power.
8. Open the server and move the jumper from the "enabled" position (pins 2-3) to the
"disabled" position (pins 1-2).
9. Close the server system and reconnect AC power and power up the server.
Note: Normal iBMC functionality is disabled when the force BMC update jumper is set to the
"enabled" position. The server should never be run with the BMC force update jumper set
in this position and should only be used when the standard firmware update process fails.
This jumper should remain in the default, disabled position when the server is running
normally.

Using the iBMC Boot Block Write Protect Jumper (J1A4)

The iBMC boot block write protect jumper (J1A4) is protection for the boot block portion
of the iBMC firmware. The default position of the jumper is covering pins 1-2. This
protects the boot block from being written to during an iBMC firmware update. In most
cases there is no need to update the boot block. Most update utilities are not built with the
authority to access this section of code.
In the unlikely event that the boot block must be written to, complete the following steps.
1. Power down the system and disconnect the AC power.
2. Open the server.
3. Move the J1A4 iBMC Boot Block Write Protect jumper from the default position,
covering pins 1 and 2 to the update position, covering pins 2 and 3 as indicated in
the following diagram.
Intel® Server Board X38ML User Guide 25