Brom Disabled By Efuse 0x146 May 2026

For some high-security devices (like newer Xiaomi or Oppo models), the only way to bypass this is using an . The tool connects to the manufacturer's server, verifies a digital signature, and "unlocks" the path for the flash tool to proceed despite the fuse status. Summary for Technicians If you see 0x146 :

Identify the exact SoC (e.g., MT6765) and search for a specific to that brand.

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. brom disabled by efuse 0x146

While the "0x146" fuse means the "easy" door is locked, the "Preloader" door is usually still cracked open if you have the right authentication files.

Most modern professional tools (like UnlockTool or Hydra) now have an option to flash via . For some high-security devices (like newer Xiaomi or

with old exploits; they won't work. Update your drivers (specifically the LibUSB filters).

An (electronic fuse) is a microscopic fuse on the chip that can be "blown" (set permanently) by the manufacturer. If the software-only "BROM jump" fails, you may

Understanding the "BROM Disabled by efuse 0x146" Error If you are trying to unbrick, flash, or bypass the FRP (Factory Reset Protection) on a MediaTek (MTK) device and encounter the error you have hit a significant security roadblock.

To counter this, manufacturers (specifically on MT6765, MT6833, and newer chips) began blowing the . This forces the device to only communicate via the Preloader , which is much easier for manufacturers to secure via digital signatures. Can You Fix "BROM Disabled by efuse 0x146"?

When you see this error, the device is essentially saying: "I refuse to enter the low-level BROM state because the hardware security fuse tells me it is forbidden." Why is this happening?