“BROM VCOM HOT” itself simply indicates the phone is reachable in preloader/boot ROM mode via a VCOM serial interface — resolving it usually requires correct MTK preloader drivers and a stable USB connection.
: Get the latest driver package for MT65xx, MT67xx, or MT68xx chipsets from a reputable source like The Custom Droid .
The secondary stage that initializes hardware. The driver switches between "MediaTek USB Port" (BROM mode) and "MediaTek PreLoader USB VCOM Port" depending on the device's state. Why You Need This Driver