On a Big-IP in the Standby state (if there are more than one Big-IP in the device group), perform the following:
Once the installation process is complete:
The upgrade can take up to 30 or more minutes depending on the size of the configuration. If the installation fails, running the command
tmsh load sys config may show an error which will aid troubleshooting.
Once the standby unit is upgraded:
Once the health of the upgraded unit is confirmed, repeat all the above upgrade steps on the peer Big-IP which is now in the Standby state and running the lower Big-IP version. Once all upgrades are complete, create a new set of UCS archives to retain backups of the new Big-IP version's configuration.