key on the screen to switch to the primary bank. If the user does not press the key to switch back to the UEFI primary bank, then the system will continue booting from the back-up bank for each boot.
This symptom may occur when performing the update described in RETAIN Tip H16222 (MIGR-5084554). " />
Boot from backup UEFI at first reboot after UpdateXpress/IBM ToolsCenter Bootable Media Creator update - IBM System x - Lenovo Support EE