The is an immutable, read-only memory layer embedded directly into the MediaTek System-on-Chip (SoC) during manufacturing. It executes the very first lines of code when a device powers on.

What (e.g., unbricking, firmware update, or device recovery) are you trying to complete?

When a flashing tool outputs , it means:

When BROM is disabled by eFUSE 0x146, traditional flashing tools (like SP Flash Tool or common bypass scripts) will fail because the hardware refuses to initialize the communication handshake.

is a specific status code indicating that the manufacturer (e.g., Xiaomi, Samsung, Oppo, Vivo) has permanently disabled the standard BROM USB download mode. Why is this happening?

The second-stage bootloader stored in the device's storage flash memory (eMMC or UFS). It initializes the RAM and loads the rest of the Android operating system.

: Ensure the device has at least 50% battery before attempting Preloader or Test Point flashing.