1. First, press the setting button on the remote control to enter the set-top box [Local Configuration], then enter the set-top box password in the red box and click [OK].

2． Then, select "Other Settings" - "System Upgrade".

3． Then, press and hold the "right button" of the remote control until "USB debugging" appears, then turn on USB debugging.

4． The computer searches for and downloads and installs TV Box Assistant. After the download is complete, use your computer to open the TV Box Assistant and search for the IP of the connection box, then select "Install App".

5. Search, download and install Dangbei Market and Dangbei Desktop. You can drag "Dangbei Market" and "Dangbei Desktop" to the TV Box Assistant box for installation, as shown in the figure below.

6. After the download is complete, select the "Toolbox" - "Streamlined System" option above the box assistant.

7. Then, click "Box Application" below to find Dangbei Desktop, click the "inverted triangle" icon button on the right, and select the "Run Application" option in the new menu bar that pops up.

8． Then click "Box Application" below, and the "Start Successfully" prompt message will appear.

9． Finally, return to the desktop, open the Dangbei Market, and download the required software in the box.