I slipstreamed my language pack to English win8.1 iso. Only one thing does not change to my language, that is Win 8.1 native apps. How can I change Win 8.1 native app's language? And Is it possible slipstream to iso? Sorry for my bad English, Many Thanks.
I'd guess that you could probably do this by adding your language using the leaked Language packs for win8.1RTM Then, if any are still not in your desired language, uninstall them and re-download them through the windows store.
AFAIK, MS is producing the Language Pack's separately for OS and single Apps, like for Windows, Office and so on and that would mean that, if there is no language pack available for some specific apps, you would need to get that Apps in that specific language you need. Maybe, and that is a BIG Maybe, you could get that language pack for such apps over the Windows Update function if you run the OS in that specific lanuage, pur personally, I hardly believe that>