The new EMUI 10 further enhance data and privacy protection also bring you a more secure experience. The EMUI 10 update for unlocked Huawei Mate20 Pro in Germany is about 4.5GB. (You should be receiving the OTA update notification soon).
To download Unlocked Huawei Mate 20 Pro EMUI 10.0.0.180 update go to the Software update menu in the phone’s settings to download the update by tapping the Download and install option.
Or download via HiCare app, open the HiCare app, click on Services tab then tap on Update, and then Check for updates.