Hi I have the German version 8.0.3.0 stable and when I want to update via the Update tool the tool does not find a new version. What can I do to get a new German version? Any chance to make an update without loosing any data?
I assume you have the Global Stable 8.0.3.0. The Global Stable Rom hasn't been updated in a while. That's why the updater app doesn't show you any updates. You could try to be patient as the global stable will be updated in sometime in the future.
Or you could migrate to the Xiaomi.eu version. For this, there are two prerequisites.
1)An unlocked Bootloader. To check, follow this link: http://en.miui.com/thread-279195-1-1.html
2)A custom Recovery. If you have an unlocked Bootloader, then flashing a custom Recovery won't be much of a hassle.