Recall code A3 installs the sofa butler by U disk, other models of Adian A3 can also refer to this tutorial.
Installation Process 1 Download Sofa Butler APK Copy to U Disk → 2 Insert U Disk to Box → 3 Open “External Device†Click “All†→ 4 Find Installation Package Download Complete
Steps

2. Adiane A3 is plugged into a USB flash drive with the latest version of the APK. The system will ask whether to open the external device. Click Open.

3, click all, so you can find the APK file.

4, click the sofa butler APK icon, you can install it. Once installed, the sofa butler application can be found in the list of programs.

5, Yidian A3 installed sofa butler display interface after success.

Installation Process 1 Download Sofa Butler APK Copy to U Disk → 2 Insert U Disk to Box → 3 Open “External Device†Click “All†→ 4 Find Installation Package Download 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.
2. Adiane A3 is plugged into a USB flash drive with the latest version of the APK. The system will ask whether to open the external device. Click Open.

3, click all, so you can find the APK file.

4, click the sofa butler APK icon, you can install it. Once installed, the sofa butler application can be found in the list of programs.

5, Yidian A3 installed sofa butler display interface after success.

If you still cannot read the USB flash drive, you are advised to format the USB flash drive in FAT32 format first (if there is any other content in the USB flash drive, export it and then format it) or try another USB flash drive.
If the installation fails, restart the device and try again by following the steps. Still have questions please add the following sofa butler official QQ group.
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Guangzhou Cheng Wen Photoelectric Technology Co., Ltd. , https://www.ledscreencw.com