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Installation process 1 Download the sofa butler installation file → 2U disk to connect the TV → 3 TV to enter the file management → 4 read the U disk file → 5 Installation is complete
Steps
1. Baidu search for "sofa manager" into the sofa network, download the sofa butler package; or directly 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.
(Note: If the U disk can not read the installation package file, you need to change the sofa installation package file name suffix (example: com.shafa.market_3.1.0.apk) to uppercase (example: com.shafa.market_3.1.0. APK), please change the file name suffix on the computer, then copy it into U disk)
2. Insert U disk into LeTV. A prompt box will pop up. Select "View all". Users without this dialog box can find "File Management" and then enter U disk. 
3, from the U disk to find just downloaded the sofa butler package, click to complete the installation. 
If you still can not read the U disk, it is recommended to format the U disk to FAT32 format (if there are other contents in the U disk, export and then format), or try another U disk.
If the installation fails, restart the device and try again by following the steps (may be useful). Still have questions please add the official QQ group below.
LeTV X50 Air installs TV live software via U disk
LeTV X50 Air installs a sofa butler via a USB stick, and LeTV can refer to this tutorial for other models.
4, LeTV X50 Air installation sofa butler display interface after success
Watch on-demand video on smart TV, recommend using pudding video; Watch live TV, recommend HDP live broadcast; More interesting content, please use Tencent video TV version, TV; Fun smart TV and box, more exciting content in Sofa net.