windows 8 pro build 9200 can't upgrade to windows 8.1 pro

[jishnu np]

i am now using windows 8 pro build 9200,but i could't find windows 8.1 in the store.can any suggest a method to upgrade to windows 8.1 pro .i had completed windows update

 

[USAFRet]

i am now using windows 8 pro build 9200,but i could't find windows 8.1 in the store.can any suggest a method to upgrade to windows 8.1 pro .i had completed windows update

Build 9200 is not the official release version. You need to have a legal, activated install to upgrade.