I installed OS X 10.10 Yosemite build
14A238x on Thunderbolt SSD / MacBook Air. A few days ago, Developer Preview 2 was released by Apple with the build number
14A261i and it should be updated via the Mac AppStore. But it is not showing up for me.
Is there a hidden cache I can purge or any other way to persuade my Mac to obtain that update?