6) After you collect the data ready, put TPX4 on CN900 key programmer like the photo, then click “OK” button.
7) After you finish these steps, you will see ” Reinsert the original key please” just same shown as the photo. Remove TPX4 chip,[obd2express.co.uk] then insert the original key to CN900 key programmer, finally click “OK” button. After a few seconds, you will see “decoded successfully” prompt on the screen.
8) A few seconds of this prompt later, you will get the following information:
9) Remove original key, then put CN3 chip on CN900 key programmer-car key programmer, click “Copy” button. A few seconds later, you will get “copy success” prompt. It means that CN3 chips has copied the original key data successfully.