: The preloader is the first piece of code to run after the hardware-level Boot ROM (BROM). It resides in the eMMC internal storage and prepares the device to load the Android OS. Communication Port
If the Preloader is corrupted or erased completely, the phone can no longer initiate a USB connection on its own, resulting in a true that can only be fixed via hardware Test Points or ISP chip-off programming. oppo realme mtk preloader