Brom Disabled By Efuse 0x146 -
If a hacker can exploit a vulnerability in the Boot ROM, they can gain permanent control. So after the final, verified bootloader is written to secure internal memory, manufacturers blow a specific efuse—say, at address 0x146 —that tells the CPU: 'Skip the Boot ROM. Jump straight to the next boot stage.'
You will need a premium tool (like , Hydra Tool , or Chimera ) that supports server-assisted auth flashing for your specific model.
Understanding the "BROM Disabled by efuse 0x146" Error If you are trying to unbrick, flash, or bypass the Factory Reset Protection (FRP) on a MediaTek (MTK) device and encounter the error you have hit a significant security roadblock.
The register address (or a specific bit field within that address) returned a value indicating that the BROM interface is permanently locked down. brom disabled by efuse 0x146
The mtkclient community has developed advanced techniques. Some newer scripts might bypass specific hardware checks, though this is not guaranteed for all 0x146 scenarios.
Understanding "BROM Disabled by EFuse 0x146": A Complete Guide
In your tool's dashboard, change the connection setting from to Preloader . If a hacker can exploit a vulnerability in
The only reliable solution. Newer replacement boards come with the eFuse already blown (same as original). You cannot downgrade.
If the device has been updated to a newer security patch and the user tries to downgrade to an older, vulnerable firmware, the eFuse may blow to permanently disable the older version, triggering this error. C. Locked Bootloader/Hardened Security
When a phone has efuse 0x146 activated, its boot path changes significantly. Understanding the "BROM Disabled by efuse 0x146" Error
The server sends a cryptographically signed challenge-response key to the phone's preloader.
To bypass this roadblock, adjust your servicing workflow away from old universal BROM methods. Instead, focus on , physical board Test Points , or secure vendor server authorization paths .
When the value at 0x146 is read by the SoC's power management or early boot logic:
Before diving into the error itself, it's essential to understand the components involved:
