The BTM511-DVK is stuck in the firmware upgrade procedure. The module is sending numerous characters and is not responding. How can the module be responsive and upgraded? However, the module can be downgraded to older firmware.

Answer

A: Once you are communicating with the module in the older firmware release via Ezurio Terminal, right click, select ?Factory Default? ? ?Via BREAK/CMD @ 9600?. This will reset the module into Factory Default Mode. Below is the break of the automated sequence: -Opens PC?s comport with ?9600,N,8,1? -Asserts PC?s RTS which is connected to module?s UART_CTS input. -Deasserts PC?s DTR which is connected to module?s UART_DSR input. -Starts a 1000msec timer -On timer expire, sends a Break (OR switch off power to module) =Starts a 1000 msec timer On timer expire, releases Break (OR switch on power to module) -Flushes receive buffer -Starts 600 msec timer -On timer expire, sends (?!!\r?) -Starts 300 msec timer -On timer expire, sends(?!!\r?) -Starts 300 msec timer -On timer expire, sends (?!!\r?) Starts 300 msec timer On timer expire, checks the receive buffer to see if at least one ?OK? was received.