: Click the gear icon in the top right corner of the home screen. Device Preferences System Update Check for Updates

A: Only if your specific PCB has a custom ROM. 99% of H20 boxes are stuck at the Android version they shipped with because driver blobs are proprietary.

If the device stops at the "Starting kernel" screen or fails to boot, specialized recovery methods are required:

Official manufacturers rarely provide direct download portals, so you must rely on community repositories or seller-provided links.