The failure of application software update software may be 1. App store problem, 2. Or software signature problem, you can try to uninstall and reinstall the application 3. Network connection problem

If it still doesn't work, it is recommended to reinstall the application software on Wandoujia

1. After installing the application on Wandoujia, you can use Wandoujia to directly update the application

2. The entrance to software updates can be found on the upper right side of Wandoujia’s main page