Those procedures are valid if your Wazo installation is newer than 18.01.
Example to upgrade to Wazo 18.02:
wazo-dist wazo-18.02
apt-get update
apt-get install xivo-upgrade/wazo-18.02
wazo-upgrade
wazo-dist phoenix-stretch
Procedures for upgrading to specific versions may freeze the version of your Wazo. Run the following commands to get the latest updates:
wazo-dist phoenix-stretch
wazo-upgrade