No. An eFuse is a physical, one-time programmable fuse within the processor. It is a permanent hardware-level security setting.
This "download mode" is what tools like SP Flash Tool, Miracle Box, and CM2MT2 exploit to flash firmware, repair IMEI, or remove FRP. For years, this backdoor was wide open.
To help pinpoint the path forward, could you share the of your device? Knowing which service tool you are trying to use would also help me provide targeted steps. Share public link
Yes, you read that correctly. Since eFuses are physically part of the silicon, the only way to "unblow" 0x146 is to remove the CPU and replace it with a new, unused one from a donor board.
"BROM disabled by efuse 0x146" is a security measure implemented by manufacturers (most notably on brom disabled by efuse 0x146 best
The short answer is for most typical end-users or repair technicians. This is because eFuse is a one-time programmable hardware switch. Once the fuse is blown, there is no fuse to "un-blow." While you cannot re-enable the BROM, there are several alternative approaches:
: Widely considered the most frequent updater for bypassing "New Security" on MediaTek. Pandora Box
of the device you are working on? Knowing the model can help pinpoint the specific test point or tool version required.
You must open the device and short a specific resistor or test point pin (typically labeled CLK, CMD, or DAT0) to the ground (GND) using tweezers while plugging in the USB cable. This "download mode" is what tools like SP
Which (e.g., UnlockTool, SP Flash Tool, CMT2) are you currently using?
This is the technician’s last resort. The principle is to force the CPU into a lower-level BROM mode before the eFuse check is executed.
When this error trips, traditional flashing tools like SP Flash Tool, MTKClient, or standard configurations of Unlock Tool fail, returning a frozen interface or a loop at the "JUMPING TO BROM" stage. What is MediaTek BROM Mode?
Once fuse 0x146 is blown, the CPU is hard-wired to ignore commands from BROM mode. Software tools like SP Flash Tool, UnlockTool, or MTK Client will fail because the hardware itself is no longer listening. 📖 The "Informative Story" of Security Patching Phase 1: The Golden Age of Exploits Knowing which service tool you are trying to
The server provides a temporary cryptographic handshake token that satisfies the processor's security requirements, effectively ignoring the 0x146 restriction during that session. Step-by-Step Recovery Using MTK Meta Utility
On MediaTek platforms, the BROM is the "Root of Trust". It is the first code that runs when the chip powers on.
In simple terms: