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 :
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?
Instead of holding Vol+ and Vol- to force BROM, you simply plug the device in normally (or hold only one button). brom disabled by efuse 0x146
The tool will attempt to use a "signed" Download Agent (DA) to communicate through the Preloader. 2. The Test Point Method (Hardware)
Identify the exact SoC (e.g., MT6765) and search for a specific to that brand. For some high-security devices (like newer Xiaomi or
Switch your tool's setting from "BROM" to or "VBO" mode.
An (electronic fuse) is a microscopic fuse on the chip that can be "blown" (set permanently) by the manufacturer. Instead of holding Vol+ and Vol- to force
This error typically appears in tools like SP Flash Tool, MTK Client, or various "unlock boxes" (UnlockTool, Chimera, etc.). Here is a deep dive into what this means and what you can do about it. What is BROM?