If you have ever tried to flash firmware (ROM) on a MediaTek (MTK) Android device using SP Flash Tool, you might have been stopped dead in your tracks by the dreaded red bar or yellow exclamation mark accompanied by the message:
Modern USB 3.0 or 3.1 ports transfer data too fast for legacy BROM protocols. Plug your cable into a black USB 2.0 port.
Before diving into fixes, it helps to understand why this happens. Common culprits include:
Several factors can cause BROM protocol errors. Some common causes include: