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 :
The tool will attempt to use a "signed" Download Agent (DA) to communicate through the Preloader. 2. The Test Point Method (Hardware)
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? brom disabled by efuse 0x146
The is the first piece of code that runs when you power on a MediaTek chipset. It is hardcoded into the silicon. Its job is to initialize the hardware and look for a bootloader to hand off control to. For developers and technicians, BROM mode is the "holy grail" because it allows for low-level communication with the device before the operating system or security software loads. The Significance of "efuse 0x146"
An (electronic fuse) is a microscopic fuse on the chip that can be "blown" (set permanently) by the manufacturer. For some high-security devices (like newer Xiaomi or
Instead of holding Vol+ and Vol- to force BROM, you simply plug the device in normally (or hold only one button).
Note: This varies by model and carries a risk of hardware damage. 3. Authorized Flashing It is hardcoded into the silicon
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"?