What is the root cause for "While sending pilot bios , target communication errors " in RCM3720


First of all check proper COM port under Dynamic C 9.62 IDE–>Options–>Project Options–> Communication –> Serial Port.

Then “Enable processor verification”.

And also check “PROG” cable properly connected on the module. Generally the people do mistakes by connecting “DIAG” port instead of “PROG”.

I hope this helps.