WordPress updates are usually intended to add new features or fix security issues. However, sometimes it is necessary to revert to an older version, such as when compatibility issues with a particular plugin or theme arise, or when you want to make sure a particular version works.
In such cases, you can easily downgrade your WordPress version using the WP CLI. The specific command is as follows
wp core update --version=4.9.9 --forceThe above command downgrades the WordPress version to 4. 9.9. The --force option also forces a reinstallation even if the version is already at the specified version.
It is strongly recommended that you make a backup before using this method. This is to prevent data loss in case of emergency.