Hello experts. i have a JDM Programmer with Serial DB9 female connector. and a simple db9 male female cable to connect with PC. whenever i do connect the programmer with PC. they unable to detect H/W. someone gives me clue that you have to make some alteration in cable connections to work for it. but i really don't know which db9 cable is perfect for JDM programmer. anyone here please guide me.
make sure the connection is connected properly and you have the proper driver for it . check the soldering point make sure it is strong and have great continuity . i relally dont know much about jdm programming but hopefully it fixes something
I do take care of all points you mentioned. i resold all points. try different kinds of USB to serial cables. install correct drivers. even some software are accepted the connection and shown availability of JDM Programmer. but after it not work to burn a simple eeprom like 24xx series 8pin flash.