Always back up your current settings before attempting an update. Updating firmware carries a risk of "bricking" the device if the file is incorrect for your specific hardware sub-model. Do you have a specific error message appearing on your screen, or are you looking for a specific version of Android for your unit?
Understanding your hardware is critical before attempting an update to avoid "bricking" the device. : MTK8321 Quad-Core. Memory : Typically 1GB or 2GB RAM with 16GB or 32GB ROM. zq8003 android update
: Some updates may transition the device from an older version to Android 10 Always back up your current settings before attempting