Upgrade procedure summary
To upgrade software from the CLI:
Download the upgrade software image file.
(Optional.) Preload the Boot ROM image to the Boot ROM.
If a Boot ROM upgrade is required, you can perform this task to shorten the subsequent upgrade time. This task helps avoid upgrade problems caused by unexpected electricity failure.
If you skip this task, the device upgrades the Boot ROM automatically when it upgrades the startup software images.
The Boot ROM image preloaded into the Boot ROM does not affect the device running status.
Specify the image file as the startup software image file.
Reboot the entire IRF fabric.
Verify the upgrade.