USBDK is a driver designed for MediaTek (MTK) CPUs, but in this scenario, it’s being used with an Exynos chipset. The connection is established via a test point. If the connection is not successfully completing, it’s important to check the device's USB port for any issues. In some cases, you may need to connect the test point, plug in the cable, and then press the power button to help stabilize the connection. This step can ensure that the device properly recognizes the connection and initiates the necessary communication.