1. Supports connection with doorbells; 2. Supports displaying video resolution in live view windows; 3. Supports exporting device info to a QR code; 4. Supports certain NVR and Smart Box alarms; 5. Supports sign-up free function (iOS only); 6. Supports displaying IMEI info for 4G devices; 7. Optimized solar device upgrades; 8. Optimized speaker function for live view and playback windows; 9. Optimized PTZ rectification function; 10. Bug fixes, improved user experience.