mine wouldnt load using hyperterm either and i was getting the same error messages. here is what i want you to try. open up my computer and go to the megasquirt folder now find the folder that has the code that you are using. now once you have clicked on that there should be 2 .bat files click the one that says download firmware. and then a dos window should open and follow the instructions. this worked for me. my friend who is a compleat computer genius did this for me and got my code loaded. let us know if it works