If you successfully run Android 9.0, you might wonder: “Can I go to Android 10, 11, or 12?” Technically yes, but practically no. For a device that started on KitKat, Android 9.0 is the sweet spot. Android 10 introduces scoped storage that breaks many older apps, and Android 11+ requires 2GB+ RAM as a practical minimum. Stop at Pie.
It is generally to directly upgrade an Android device from version 4.4.2 (KitKat) to 9.0 (Pie) using an official method. Most devices that launched with 4.4.2 stopped receiving updates years ago. upgrade android 4.4.2 to 9.0