I am using HLK-LD2451 and I can't understand what is the frequency of UART messages in it. I have one radar with V1.09 FW, and one radar with V1.13 FW. It seems, that radar with V1.09 send messages with higher frequency (at the same baudrate). Is it the true? And can I downgrade from V1.13 to V1.09 using your app? What is the code for this FW version?