HI, got the PCF7935AS transponder chips today. . Used the Zed-Bull option 2 (copy transponder) . Put my key in , hit enter, hit read , it read the code, then placed transponder chip in read pocket narrow end down like it would be in key fob, hit write. Said it was successful. Turned the machine off and read code on chip a couple of more times, code still matched orig. key code. I still have to test this in the car, but so far so good. Will let you know. The key type says blank, but the code is right ?