CN900 Mini key programmer has same function as CN900, just mini version for hand held. CN900 Mini can directly program 4D, 4C, 46, G chips, no need any other box. This is guide for Mini CN900 to copy Mazda 3 4D63 chip.
Step1. Start CN900 Mini, there is “READ©” button on the menu. Insert your original transponder key into the slot. Press “READ©” button.
Step2. Don’t move the key, CN900 Mini read out the key code and the key type is 63.
Step3. Press the “DECODE” button to decode the original key. (Don’t move the key) Wait for a while, the decoding will be done successfully. Remove the original key.
Step4. Put the new 4D63 transponder chip into the upper small slot (showed like picture) and press the “COPY” button. Please wait and don’t move the new chip.
Step5. CN900 Mini will show “Verify Data” and then “success”. Now CN900 Mini copy 4D63 chip for Mazda 3 successfully.
This is from Carkeydeals: Best car key tools for sale website Key Copy Machine technical support: How CN900 Mini key programmer copy Mazda 3 4D63 chip