The screen may remain black during the update. Do not turn off the TV or remove the USB. The process usually takes 3–5 minutes.
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Press and on the TV's side panel (not the remote). The screen may remain black during the update
Common sources include Scribd for manuals and technical documentation. Step 3: Prepare the USB Drive remove the USB drive.
Continue holding for until the front LED indicator begins to blink rapidly.
Do you have the from the service menu so I can help you find a more specific file? How to Update Smart Tv Software || Wisdom Share Smart Tv
The TV will automatically reboot when finished. Once it turns on, remove the USB drive.