July 21, 2010 Patch (Portal)

{{Patch layout
 * game = portal
 * source      = http://store.steampowered.com/news/4105/
 * source-title = Portal Update Released
 * before      = June 15, 2010 Patch (Portal)
 * after       = August 17, 2010 Patch (Portal)
 * notes       =

Portal
}}
 * Fixed bonus map import dialog