Brom Disabled By Efuse 0x146 -

: If the eFuse block is absolute across the boot structure, even a physical test point may fail to force standard BROM, leaving META mode or authorized vendor logins as the remaining valid paths. Best Practices for Mobile Technicians

Demystifying "BROM Disabled by eFuse 0x146": Causes, Impact, and Practical Solutions

That said, some limited workarounds may exist in specific cases:

Because an eFuse is a physical hardware change, it cannot be "un-burned" by software or firmware updates. brom disabled by efuse 0x146

If you encounter 0x146, accept that the device is fully hardware-locked. Your options are:

BROM disabled by efuse 0x146: Understanding the MediaTek Security Lockdown

status, it signifies that the "front door" to the chipset’s most basic functions has been physically removed. Because the change is etched into the silicon, there is no software command or "bypass" that can reconnect the fuse. For developers and enthusiasts, this represents the ultimate boundary of hardware-backed security, where the manufacturer’s policy is enforced not by code, but by the physical reality of the chip itself. or specific test point hardware solutions for your device model? : If the eFuse block is absolute across

Many Dimensity and newer Helio chips come from the factory with this fuse already set. Is there a workaround?

Locate the small gold pinout labeled (Clock), CMD , or GND (Ground) meant for forcing BROM.

: In many cases, the only way to flash such a device is through Authorized Mi Accounts or specialized manufacturer tools that use signed authentication (DA/Auth files) that the locked BROM still recognizes. Your options are: BROM disabled by efuse 0x146:

(e.g., Amazon Fire 7 2019) – If that connects fine, but your Dimensity device shows 0x146, you’re fused.

: Modern devices (like those from Xiaomi or newer Samsung MTK models) often disable BROM to prevent the use of "bypass" tools that exploit vulnerabilities to remove screen locks or Google FRP (Factory Reset Protection).

This paper examines the cryptic debug error encountered during low-level boot ROM (BROM) execution on a System-on-Chip (SoC). While seemingly esoteric, this error reveals a deliberate hardware lockdown triggered by a one-time programmable (OTP) eFuse array. We dissect the meaning of eFuse 0x146, analyze its role in disabling the primary boot ROM, and discuss the implications for device repair, security research, and reverse engineering. The paper concludes with practical diagnostic steps and potential mitigation strategies for locked devices.

Ensure your flashing tool is set to "Preloader" instead of "BROM."

: Flashing the wrong preloader.bin while the BROM is disabled can make the device completely unresponsive, as you lose your only remaining entry point.