Hello, I have a question and don't know where to write, so I write here, sorry if this is not the right place.

I have bought MH-ET live Scanner 3.0, and scanned the factory default reset code from the spec I downloaded from Internet. And then it stopped sending any data via UART. Why is this? And how can I get the UART data again? The spec says UART is open by default at 9600bps but it seems not doing anything since I scanned the reset code.

Thanks in advance.