2.3.3.7. Upgrading MySQL with the Installation Wizard
The MySQL Installation Wizard can perform server upgrades
automatically using the upgrade capabilities of MSI. That
means you do not need to remove a previous installation
manually before installing a new release. The installer
automatically shuts down and removes the previous MySQL
service before installing the new version.
Automatic upgrades are available only when upgrading between
installations that have the same major and minor version
numbers. For example, you can upgrade automatically from MySQL
4.1.5 to MySQL 4.1.6, but not from MySQL 5.0 to
MySQL 5.1.
See Section 2.3.14, “Upgrading MySQL on Windows”.
