1. The device list supports the grouping function.
2. Support setting items for 7-inch screen devices.
3. PTZ speed control support.
4. Device alarm voice setting optimization.
5. Gateway channel range support is limited by country.
6. gateway prompt tone language selection support.
7. Playback timeline control optimization.
8. Playback, sharing, setting and other import optimization.
9. Add device experience process optimization.
10. Fix multi-language issues.