After the MXX-Series License is activated, KTFlash dongle will be able to read and write MXX-Series ECU. We are dedicated to providing excellent support and assistance. If you have any questions, concerns, or inquiries, please don't hesitate to reach out to us. Our team is here to help! Email:Sales@ECUHELPshop.com Whatsapp:+86-18205996549 Skype:Sales@ECUHELPshop.com Live Chat: Visit our website and click on the live chat option to chat with Oliver Liu in real-time.