The error code is returned by the BROM itself via USB handshake or UART. It breaks down as follows:
Official service center tools (like those from Vivo or Samsung) may still have access via signed authentication protocols that don't rely on the legacy BROM exploit. brom disabled by efuse 0x146
: On enterprise or financed devices, the 0x146 status can be a result of "KG Status" or other remote locking mechanisms intended to prevent the device from being reflashed or "unlocked" after a theft or contract breach. Implications and Recovery The error code is returned by the BROM