You can find manual "Combo" updates (to move from 10.9 to 10.9.5) on the Apple Support Downloads page Full Installers:
: Introduced Finder Tabs and much-improved Multiple Display support. How to Download Mavericks 10.9 mac os x mavericks 10.9 iso and dmg image download
One of the most interesting "under the hood" features in OS X Mavericks 10.9 is , a power-saving technology that intelligently manages system resources. Unlike previous versions, Mavericks was explicitly engineered for efficiency rather than just visual polish. Key Power & Performance Features You can find manual "Combo" updates (to move from 10