Using an HMC to remove the current firmware (Licensed Internal Code) level

Find out how to remove the current level of firmware with an HMC so you can return to a previous level of server firmware or power subsystem firmware.

1. Expand the Licensed Internal Code Maintenance folder.
2. Click the Licensed Internal Code Updates icon.
3. In the Contents area, click Change Internal Code.
4. In the Target Object Selection window, click the target system, and click OK. The target is the managed system from which you want to remove the current level of firmware.
5. In the Change Internal Code window, select Select advanced features and click OK.
6. In the Advanced Features window, select Remove and activate, and click OK.
7. In the Confirm the Action window, perform the required actions, and click OK.

   If the process is disruptive, the following message is displayed on the HMC interface: Quiesce any applications currently running on your operating systems for the systems listed below. In this situation, you need to manually shut down all of the applications and logical partitions to prevent the system from shutting them down abnormally.

   Use the usual procedures to shut down the logical partitions:

   • i5/OS^® logical partitionsTo shut down i5/OS logical partitions, use the Power Down System (PWRDWNSYS) command from an i5/OS command line (either in a 5250 emulator session on your HMC, or on the Operations Console). For further instructions, see Shutting down i5/OS logical partitions.
   • AIX^® logical partitionsFor instructions, see Shutting down AIX.
   • Linux^® logical partitionsFor instructions, see Shutting down Linux.

   At the end of a disruptive process, the managed system automatically returns to its original state.