1. Issue description:

The application is used serial port to communicate between N1 and the host. N1 drop into the freeze status after sending Restore the factory default command and follow by an other command without delay.

2. Root cause of the issue:

Restore the factory default command refreshes the serial port settings. Before receiving the response by N1, if there is any other command send to N1, it can cause N1 drop into the freeze status. Need to power off and power on to return to normal status of N1.

3. Solution:

It need to insert a 100ms delay if it meets all the conditions as following:

a. Product list: BS8060V4,EM3080-W V2,EM3096 V3,EM3296V4,EM3396V2,FM3051/56 V4,N1,OY0270 V4

b. Use the Serial port to communicate with the host.

c. Sending the command that relative with the serial port settings.(Including Restore the factory default)