This tutorial is applicable to Changhong 39S1 TV. Other models of Changhong 39S1 TV can also refer to this tutorial. [Installation process] 1 Download the sofa butler installation file to U disk → 2U disk is connected to Changhong TV → 3 Installation package management enter U disk to install → 4 Installation is completed ã€Steps】 1. Baidu searches for “Sofa Manager†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. Connect U disk to Changhong 39S1 TV TV USB port, 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. Watch the video with Changhong 39S1 TV, and recommend high-quality video applications such as HDP live broadcast and TV cat. Fun smart TV (and box), exciting content in the sofa network.