This usually requires entering a test mode by dialing *#0*# in the emergency dialer to enable ADB. :

Knowing the model can help pinpoint the exact test point locations or required DA files.

An eFuse is a hardware-level, one-time programmable fuse built into the processor. Once blown, it permanently changes the state of the chip. It is the digital equivalent of a physical fuse that, once blown, cannot be repaired. Unlike a software setting that can be toggled on and off, an eFuse is a physical modification of the chip's circuitry.

In essence, the tool is trying to open a door, but the eFuse has permanently locked it from the inside.

The error message specifies a particular efuse address: . This address corresponds to a specific security control bit in MediaTek chipsets (commonly seen on MT6765, MT6785, MT6833, MT6893, and newer Dimensity series).

: When you see this error, standard USB-to-PC connection methods for low-level flashing will fail because the hardware itself is instructed to ignore these commands. Potential Solutions

To secure their chipsets against popular software exploits (like the infamous Kamakiri BROM bypass), manufacturers utilize an —a microscopic fuse inside the MediaTek SoC.

Instead of forcing the device into BROM via key combinations, you force the tool to communicate via Preloader Mode (often labeled as "EMI" or "Preloader Exploit" in your service tool interface). 2. Use Custom Preloader Files (DA/Auth Files)

: Use the "Force BROM" or "VROM" options specifically designed for newer Samsung MTK security. ChimeraTool / UnlockTool

Which or hardware box are you currently trying to use?

Understanding "BROM Disabled by eFuse 0x146": The Ultimate Technical Guide & Best Fixes