I cannot change configuration to Alpha+ RTK receiver using RTK Viewer 126.96.36.199. I have set receiver’s baud rate to 19200 and 10 Hz refresh rate for Rover mode and then after reconnection of USB cable I cannot change any settings anymore. I am still able to connect to receiver via USB port at 19200 baud rate and get NMEA sentences, but menu Settings and Updates are greyed out. I have tried to set switch both to A and B position without any success. How to restore receiver’s baud rate to factory default 115200?