Fix known issues 1.fix bugs

1. Improve device stability; 2. Fix known issues.

Improve equipment stability;

Fix known issues

1.improve the device stability

[Firmware Update] 1. Repair with water electric protection function. 2. Optimize the preheating experience. 3. Increase the off-screen time.

[Firmware Update] 1. Repair with water electric protection function. 2. Optimize the preheating experience. 3. Increase the off-screen time.

modify the stability of device

[Firmware Update] 1. Restore the factory Settings during network reconfiguration. 2. Update the protocol and repair the conflict of language control preheating.

[Firmware Update] 1. Optimize the preheating start time; Added preheat to complete push. 2. Added the task that can disable the scheduled preheating on the same day.