It is recommended that you install the software as follows:
1, download the installation package in APK format on the computer side and copy it to the USB flash drive.
2. Insert the U disk into the USB interface of the TV.
3. Open 360 TV Guardian, Software Manager-Installation Package Management, and install it. (360 TV Guardian needs to be upgraded to the latest version: Open the Guardian Settings and update it. )
If the problem is still unresolved, I suggest you call Hisense's national service hotline.