1. Provide a detailed description of the malfunction  2. Use a mobile phone to capture the malfunction, upload it to the website: WeTransfer, generate a downloadable link, and send it to our Outlook mail; LEFFOT2025  3. Be careful not to send links through Amazon's internal message center as they may be blocked by Amazon.  4. After receiving your video, we will contact the manufacturer to analyze the cause and provide a solution; Restore factory settings path: Click on "Settings" → dropdown, click on "Device Preferences" → click on "About" → click on "Restore factory settings or reset". System upgrade path 2: On the homepage, click on "More APP" to enter the "More APP" interface ->find the "FOTA Update" APP, click on this application to enter the system upgrade. Our TV box comes pre installed with apps such as Google Play, Netf, Prim Video, YuTub, and more. It should be noted that these apps manufacturers recommend using preinstalled applications as they are already compatible with the TV box's system. If upgrading these applications results in compatibility issues or inability to use them properly, you can restore the normal use of the applications by resetting them to factory settings. 1. Most applications can be installed from Ggle Play, and it is recommended to choose the 32-bit system version or the universal version; 2. Download and install the required apps, such as Disne, through the app store; OR Download and install the required applications through the app store; OR Download the APK file(32-bit or universal version) and install the application through a .