Brom Disabled By Efuse 0x146 Best Jun 2026

What are you attempting to complete (e.g., FRP bypass, unbricking, factory reset)? Share public link

Do you have the for your specific device model, or should we look for that next?

The best way to resolve the "BROM disabled by efuse 0x146" limitation is to like Chimera Tool, Pandora Box, or UnlockTool. Understanding the eFuse 0x146 Lockout

The BROM is a small, read-only memory embedded inside the MediaTek CPU. It is the when your device powers on. Its job is simple:

: Manufacturers permanently blow a specific hardware bit on the silicon die (represented by the hex register value 0x146 ). brom disabled by efuse 0x146 best

Tools like SP Flash Tool can still detect the phone, but the second they try to send a "DA" (Download Agent), the BROM rejects it and throws error 0x146 .

) and you are using so I can give you the precise connection sequence. Share public link

Before diving into the 0x146 code, it helps to understand why the chip's internal boot system is designed this way:

To understand the weight of eFuse 0x146, one must first appreciate the role of the BROM. The BROM is the "root of trust" or the genesis point of a device’s operational life. It checks the integrity of the bootloader, initializes essential hardware, and often provides an emergency recovery mode (usually via UART or USB) if the primary software is corrupted. For developers, repair technicians, and unfortunately, malicious actors, the BROM is the ultimate backdoor. It allows for unbricking devices, flashing unauthorized firmware, or extracting data regardless of the state of the operating system. It is the master key to the hardware. What are you attempting to complete (e

This is the very first code that runs when a MediaTek chip powers on. It’s hardwired into the silicon. Technicians use it to unbrick phones or bypass screen locks because it runs before the operating system.

This article explores the technical mechanisms behind this hardware security feature and evaluates the best actionable methods to bypass it. What is the BROM and eFuse 0x146?

A fine-tipped pair of tweezers, a device schematic or Test Point diagram specific to your phone model, and a compatible service tool. 2. Preloader Flashing Mode (SLA/DA Authentication Bypass)

: Safely remove the back cover and shields protecting the motherboard. Understanding the eFuse 0x146 Lockout The BROM is

These brands have heavily integrated MediaTek's new secure boot, using 0x146 to protect against flashing modified partitions.

For high-security brands like Vivo, Oppo, and Samsung (especially regarding Knox or KG locks), the eFuse completely shuts out unauthorized tools. In these cases, the best solution is using an that inputs a server-side cryptographic token to authorize the command lines through standard Fastboot or ADB interfaces. Step-by-Step Recovery Strategy

Here is a breakdown of what is happening in this sequence: