Disclaimer: This guide is for educational purposes only. Updating cloned hardware violates the terms of service of the original manufacturer (EVC International). Proceed at your own risk. We are not responsible for bricking your device. Introduction: Why the 2.25 to 2.70 Leap Matters If you are an automotive tuner or a repair shop owner using a KTAG clone (the notorious blue board running on Chinese hardware), you are likely stuck on version 2.25 . This version is stable but ancient. It lacks support for Bosch MED17.5.24, Simos 18.x, and many 2020+ ECUs.