The driver shows a yellow exclamation mark in Device Manager with a message stating Windows cannot verify its digital signature.
This is the hardware-level state. It stays permanently connected if triggered correctly. Windows recognizes it as MediaTek USB Port (usually COM port 3 or higher). Prerequisites for Installation mtk brom mode driver
MediaTek BROM connection protocols struggle with USB 3.0 or USB 3.1 ports (blue ports). Plug your cable into a USB 2.0 port (black port) directly on your motherboard if using a desktop PC. The driver shows a yellow exclamation mark in