So found out today that dodge did a os flash on some of these trucks and you cant read them out flash them with pretty much anything. And if you do flash it with hpt or anything else you will have a no start. it gives you a checksum error after flashing. apparently they locked the pcm's down even more.. has anyone else had this issue, have you found the back door to this problem to get them unlocked or changing back to an older os software.