On some devices, shorting specific test points on the motherboard (e.g., KCOL0 to KROW0 or CMD to CLK on eMMC) can force the SoC to bypass the eFuse check temporarily. This is advanced and requires disassembly. Even then, success is not guaranteed for error 0x146 .
Use a reliable tool (Z3X, Pandora Box, SP Flash Tool, mtkclient) and ensure the USB connection is stable. The error should appear consistently.
: Unlike software locks, an eFuse is a physical change on the chip that cannot be "undone" by software alone. Security Updates : Manufacturers like
using unofficial, unknown tools.
This specific code indicates that the Secure Boot or Hardware Root of Trust mechanism has been active, and the eFuse has been permanently configured to disallow low-level, unauthenticated BROM access. 2. Causes of "BROM Disabled by EFuse 0x146"
To avoid encountering the "Brom Disabled by Efuse 0x146" error in the future:
cannot be easily modified or modified for unauthorized network use. Service Strategies for Affected Devices brom disabled by efuse 0x146
"Formatting NAND will fix it." Fact: Formatting cannot change eFuse. The error occurs before any NAND access.
While the eFUSE lock cannot be reversed, some alternative paths may still exist depending on the device's specific security configuration.
Manufacturers disable BROM to protect user data and fight device theft or software piracy. On some devices, shorting specific test points on
Some tools allow switching to Preloader mode (e.g., using “Advanced Authorization” options). If the tool reports “Advanced Authorization supported”, you may be able to perform limited tasks like FRP erase or firmware info reading. If it says “not supported”, you are out of luck.
Which are you currently using? (e.g., UnlockTool, SP Flash Tool, MTK Client)