Many users don't associate audio with "quality," but a great picture with bad audio sync ruins immersion. The update fixed a persistent 150ms delay on HDMI ARC. Dolby Digital processing also improved—dialogue in streaming apps is now clearer without needing to enable "Night Mode."
Once your software is updated, you can further enhance your "Extra Quality" experience with these settings: shinco tv software update extra quality
Use your remote to select the Settings (gear icon) on the Home screen. Many users don't associate audio with "quality," but
To achieve "extra quality" performance—which typically refers to optimizing picture processing and system speed—you should follow these specific update methods: Method 1: Automatic Over-the-Air (OTA) Update shinco tv software update extra quality
Have you completed a Shinco USB update? Share your model number and results in the comments below to help fellow users achieve the same "extra quality" standard.