I am facing problem Teseo-LIV3F is not sending out any NMEA messages and also not accept any commands. Anyone know Why? and How to set back to "Factory Setting" ?

Hi,I'm using AEK-COM-GNSST31 to valuate Teseo-LIV3F. Firstly, it worked so well throught the default setting values. My problem is after i set command to change uart baurate from 9600 to 38400 there is no output signal from uart.below are commands i ...