i setup a windows 8 Prof machine. after doing all the windows update, I cannot update to windows 8.1 pro.

I dont see the option to download 8.1 pro in the windows store.

what else do I need to do in order to update to windows 8.1 Prof.

there is one error when i try to do manual update

Sorry, this update isnt available for your PC, or you might be running an edition of Windows that doesnt support updating from the store. Learn more.

• Edited by yeowkm 4 hours 50 minutes ago

Check : http://windows.microsoft.com/en-in/windows-8/upgrade-to-windows-8