This tutorial is applicable to Changhong 55U2S TV. Other models of Changhong 55U2S TV can also refer to this tutorial. [Installation process] 1 Download the sofa butler installation file to U disk â†’ 2U disk is connected to Changhong TV â†’ 3 Installation package management enter U disk to install â†’ 4 Installation is completed ã€Stepsã€‘ 1. Baidu searches for â€œSofa Managerâ€ to enter the sofa network and downloads the sofa butler package; or click the link (http://app.shafa.com/shafa.apk) to download the sofa butler package. Copy the downloaded apk installation package to the U disk. 2. The U disk is connected to the Changhong 55U2S TV TV USB port, and then click [Local Media]; 3. Select [All] to find the sofa housekeeper apk in the USB flash drive under all categories. Click the apk and the installation prompts to install. Use Changhong 55U2S TV to watch videos, HDP live broadcast, TV cats and other high-quality video applications are recommended. Fun smart TV (and box), exciting content in the sofa network.