A progress bar will appear. The process usually takes between 1 to 3 minutes. Once complete, the ViewTV AT-163 will automatically reboot. Phase 4: Post-Update Optimization
: Insert the USB drive into the front or rear USB port of the powered-on ViewTV AT-163
If an update is available, you'll be prompted to download and install it. This process may take a few minutes, depending on the size of the update and your internet connection speed.
Go to Menu > System > Factory Restore and perform a full reset. This clears out old configuration caches that might conflict with the new firmware.
: Refining how the device handles emergency broadcast signals. Amazon.com How to Perform a Manual Update