Those procedures are valid if your Wazo installation is newer than 19.12
Example to upgrade to Wazo 19.13:
wazo-dist -a wazo-19.13 apt-get update apt-get install wazo-upgrade/wazo-19.13 wazo-upgrade wazo-dist -m pelican-buster
Procedures for upgrading to specific versions may freeze the version of your Wazo. Run the following commands to get the latest updates:
wazo-dist pelican-buster wazo-upgrade