I got: 2010 Chevy Cobalt 4dr., Compustar CS-7502AS, and Fortin Evo-ALL w/ firmware version 70.21. I was able to get the Compustar and the Fortin to work and start the car through the remote starter process. Then I went and unplugged the 20 pin harness on the Fortin to get rid of a wire that was not connected. After, I plugged it back in and it would not work. I unplugged all the harnesses and tried to reprogram it. Held black button, then plugged in the data wire for the solid blue led, came on, plugged all other harnesses in, put key in and turned to On position, no yellow led. Tried to reset unit as directed on on your site, process went good, tried to reprogram unit as before, and same thing occurred. Did the whole process over and over several times, still the same. I have another Evo-ALL unit. I loaded the same firmware as before, tried the same process over on the new unit, still the same. Tried over and over several time, still the same. HELP, PLEASE! Mobile: (507)358-2715