Brom Disabled By Efuse 0x146 Now

Select the option forced to communicate via instead of BROM.

: Because an eFuse is a physical component, this change is irreversible. You cannot "re-enable" BROM once it has been disabled by this fuse.

For years, security researchers exploited the BROM download mode to bypass signature checks, unbrick devices, and gain low-level access. These exploits (e.g., mtk-su , brom-exploit , kamakiri , mt8163 BROM bugs) worked because the BROM would accept authenticated preloader from the host PC over USB. brom disabled by efuse 0x146

Practical step: In SP Flash Tool, go to Options > Authentication File and load the corresponding auth_sv5.auth file before connecting the device.

Probably not. These tools work by exploiting bugs or authentication weaknesses in the BROM itself. When the BROM is physically disabled, there is no attack surface left. Tool developers have explicitly stated that there is currently no solution and they are still researching. Select the option forced to communicate via instead of BROM

Which are you currently using? (e.g., UnlockTool, SP Flash Tool, MTK Client)

: In recent years, researchers discovered critical vulnerabilities in MediaTek's BROM code (such as the famous Kamakiri exploit). These allowed users to bypass security, read data, and remove locks without a password. Disabling BROM kills these hardware exploits entirely. For years, security researchers exploited the BROM download

For tech-savvy users, there are forums and resources (like XDA Developers) where you can find device-specific threads and guides on how to potentially unbrick your device. Techniques might involve using specific tools, software, or even hardware flashing.

eFuses are physically blown (irreversibly programmed) during manufacturing or first boot. Each fuse corresponds to a bit or a small field in a memory-mapped register space. Common eFuse uses include:

To help narrow down the best solution for your device, could you provide a bit more context? Please let me know:

Some tools allow switching to Preloader mode (e.g., using “Advanced Authorization” options). If the tool reports “Advanced Authorization supported”, you may be able to perform limited tasks like FRP erase or firmware info reading. If it says “not supported”, you are out of luck.