By Efuse 0x146 - Brom Disabled

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.

More importantly, in many newer Oppo, Realme, and Vivo devices, this fuse indicates that in favor of "Preloader" mode only.

There is a common misconception that you can "reset" this fuse. Once an efuse is blown, it is a permanent physical change to the processor. However, there are two ways to work around it: 1. Use "Preloader Mode" Instead of BROM brom disabled by efuse 0x146

Most modern professional tools (like UnlockTool or Hydra) now have an option to flash via .

is a specific status code indicating that the hardware-level "SLA" (Serial Link Authentication) and "DAA" (Download Agent Authentication) are strictly enforced. While the "0x146" fuse means the "easy" door

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 :

An (electronic fuse) is a microscopic fuse on the chip that can be "blown" (set permanently) by the manufacturer. Once an efuse is blown, it is a

Note: This varies by model and carries a risk of hardware damage. 3. Authorized Flashing

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.