The Amazon Fire TV Stick 4K with the model number B0BP9MDCQZ officially supports the Zattoo app as long as the Amazon Appstore is available in your region and the device is running on the latest Fire OS. The app can be installed and used directly via the Fire TV store. The model offers powerful performance for 4K streaming, HDR10+ and Dolby Vision thanks to its quad-core processor, 2 GB RAM and Wi-Fi 6. Overall, the stick is powerful and fully compatible with Zattoo, apart from possible regional app availability restrictions.