Those procedures are valid if your Wazo installation is newer than 16.08 and older than 18.01.
Example to upgrade to Wazo 17.02:
xivo-dist wazo-17.02 apt-get update apt-get install xivo-upgrade/wazo-17.02 wazo-upgrade xivo-dist phoenix
Example to upgrade to Wazo 18.02:
wazo-upgrade
This will upgrade your xivo to Wazo 17.17. From there:
upgrade to Wazo 18.02:
wazo-dist-upgrade -t wazo-18.02 wazo-dist phoenix-stretch
Note
Upgrading to a specific version between 18.03 and 19.12 is not supported
Procedures for upgrading to specific versions may freeze the version of your xivo. Run the following commands to get the latest updates:
xivo-dist phoenix wazo-upgrade