Brom Disabled By Efuse 0x146 -
If you are trying to unbrick, flash, or bypass the security on a MediaTek (MTK) powered smartphone and hit the error , your device's hardware-level security has blocked your connection.
This signature temporarily unlocks the flashing restrictions for that single session without needing raw BROM mode. Method 3: Utilizing Updated Universal Servicing Tools
An Electronic Fuse (eFuse) is a tiny bit of non-volatile memory in the CPU that can only be "burned" once (set from 0 to 1) and never reverted.
with old exploits; they won't work. Update your drivers (specifically the LibUSB filters). brom disabled by efuse 0x146
The error code “Brom disabled by Efuse[0x146]” points to a very specific eFuse that MediaTek—and more importantly, the —can blow to disable the BROM entirely.
is a specific status code indicating that the hardware-level "SLA" (Serial Link Authentication) and "DAA" (Download Agent Authentication) are strictly enforced.
: Always verify the exact MediaTek processor version (e.g., MT6765, MT6833) before selecting a profile to ensure the correct handling of preloader security. If you are trying to unbrick, flash, or
To eliminate unauthorized device modifications, bootloader unlocking, and third-party forensic extraction, manufacturers (such as Samsung, Xiaomi, and Oppo) ship over-the-air (OTA) updates or factory revisions that systematically blow this eFuse. This locks down the hardware interface permanently, ensuring that older BROM bypass exploits can never be executed on that chip again. 2. MDM and KG Lock Enforcement
: Historically, developers and technicians used BROM mode bypass exploits (such as Kamakiri) to bypass authentication, allowing them to read/write partitions, remove Knox/KG locks, or unbrick devices without official vendor authorization. 🔒 What is an eFuse and Hex 0x146?
Understanding and Fixing the "BROM Disabled by efuse 0x146" Error in MediaTek Devices with old exploits; they won't work
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To understand the error, you first need to understand the boot process of a MediaTek chip.
is a physical component that is "burned" at the factory or during a high-security firmware update. Once blown, the BROM mode—commonly used for low-level tasks like FRP removal or bootloader unlocking—is physically inaccessible. Device Context : This error is most frequently seen on modern Vivo, Oppo, Realme, and Motorola devices with newer security patches. Error Code 0x146
If the software-only "BROM jump" fails, you may have to open the device. By shorting a specific on the motherboard to Ground (GND) while plugging it in, you can sometimes force the processor to ignore the fuse's instruction and enter a functional BROM state.
