Because this is a hardware-enforced modification, you cannot magically un-blow the fuse. However, it does not mean the phone is a permanent brick. Technicians use alternative pathways to flash firmware or remove locks. Method 1: The Preloader Mode Exploit
0x146 is just a code—different chips use different addresses—but the meaning is universal: The manufacturer permanently disabled this boot path. The chip will only boot from a secure, internal location, and nothing you do can re-enable the ROM. "
This is a read-only memory chip embedded inside the MediaTek CPU. It contains the very first code that executes when the device powers on. It acts as a low-level recovery mechanism, allowing communication with a computer via a USB cable even if the phone has no operating system installed. brom disabled by efuse 0x146
: In many cases, the only way to flash such a device is through Authorized Mi Accounts or specialized manufacturer tools that use signed authentication (DA/Auth files) that the locked BROM still recognizes.
While there is no "magic button" to un-blow a fuse, the community uses these advanced methods: Because this is a hardware-enforced modification, you cannot
A specific pin on the motherboard (the Test Point) must be shorted to the ground (shielding) using tweezers while plugging in the USB cable.
Since the CPU bypasses BROM, it hands off communication directly to the partition. Modern servicing tools use customized DA (Download Agent) configurations or authentication handshakes via the Preloader interface. Method 1: The Preloader Mode Exploit 0x146 is
This eFuse is part of MediaTek’s mechanism. When blown, the chip’s boot ROM code checks the eFuse status during the very first microseconds of start‑up. If the eFuse at address 0x146 is found to be programmed, the chip simply refuses to enter BROM mode, regardless of test points, voltage tricks, or any other method.
Odin (uses Download Mode instead of MTK BROM architecture). Summary of Best Practices
If the software is completely unresponsive and the Preloader is corrupted, your only remaining option is a hardware Test Point. The device must be disassembled to expose the motherboard.