Step-by-step:
Force restart by holding Power + Volume Up to enter recovery mode, then clear the cache partition. How To Update Software On DOOGEE U9
Updating the software on your DOOGEE U9 ensures you have the latest security patches and features. You can perform this update directly through the device settings via a Wireless Update Steps to Update Your DOOGEE U9 Open Settings : Locate and tap the app on your home screen or apps list. Navigate to System : Scroll down and select the Check for Updates Wireless Update System Update (some versions may require tapping first to see this option). Ensure your device is connected to a stable Wi-Fi network , as update files can be large. Download and Install If a new version is available, tap the Once the download finishes, follow the prompts to and restart your device. Important Tips Update Software DOOGEE U9 - HardReset.info Step-by-step: Force restart by holding Power + Volume
Visit the official DOOGEE download center on a computer or your tablet browser. Navigate to System : Scroll down and select