How do I revert to a previous version?
In case you have updated DVT Eclipse and you want to go back to a previous installation checkpoint, you can do that using: Help > About Eclipse > Installation Details > Installation History.
Using this page you can select a previous configuration and inspect the installed plugins and versions. If you decide to go back to one of the old configurations just select it an click Revert.
Note
Sometimes Eclipse might need the update site for the plugins involved in the revert operation, to add them go to Window > Preferences > Install/Update > Available Software Sites.