The new firmware is suitable for FI9821W V2, FI9818W V2, FI9831W, FI9826W, FI9821P, FI9831P, FI9826P,
FI9805W, FI9804W, FI9804P, FI9805E, FI9805P, FI9805EP.

System firmware version: 1.4.1.10
App firmware version: 2.x.1.120
Plug-in version: 3.3.0.31

Improvements:
Fixed some bugs.