: This is often the most reliable "best" fix. You must open the device and short a specific point (CLK or CMD) on the motherboard to ground while connecting the USB cable. This bypasses the software-level BROM block and forces the device into a usable state for tools like ChimeraTool Preloader Mode (Software)
Ensure you have the latest MediaTek USB Drivers and LibUSB-Win32 filter drivers installed on your computer. Without these, your PC will drop the device connection instantly.
Search for a reliable hardware test point schematic diagram specifically matching your device model.
Keep the points shorted, plug the USB cable into the PC, and check your computer's Device Manager to see if an active COM port appears. 3. Factory Downgrade Method via Meta Mode brom disabled by efuse 0x146 best
If the phone still boots into Android, you can try bypassing the lock using .
When a phone receives an official OTA (Over-The-Air) update or a specific security patch (usually Android 9, 10, 11, or 12 with MediaTek), the manufacturer "blows" the eFuse at address 0x146 . This permanently tells the BROM: "Do not accept unsigned or unauthorized flash operations."
This specific hex code typically signifies that the security bit for BROM access has been set to "disabled". Once this fuse is blown, standard software-based "Force BROM" methods (like holding volume buttons) will fail because the processor itself refuses to enter that mode. Why Does This Happen? : This is often the most reliable "best" fix
If you are still receiving the 0x146 error during your flash sequence, check for these common faults:
Carefully open the device housing and remove the protective metal shielding from the motherboard.
: Widely considered the most frequent updater for bypassing "New Security" on MediaTek. Pandora Box Without these, your PC will drop the device
Because this is a hardware-level lock, "best" depends on how far you are willing to go. 1. The Preloader Method (Software) Instead of BROM, most modern tools now use the .
The term "0x146" refers to a specific memory address. The addition of "Best" at the end could imply a specific setting or configuration related to the disabling.
Open your chosen servicing tool and select your exact device model (e.g., Samsung Galaxy A12/A04, TCL 30 XL, or Infinix variants).
If you’ve ever tried to unbrick or flash a modern MediaTek (MTK) device and were met with the error you know the frustration. This isn't just a simple software bug; it's a hardware-level security implementation designed to block unauthorized access to the BootROM.
: The 0x146 value indicates that the BROM (Boot ROM) is physically disabled by an electronic fuse (efuse). This means standard MTK flashing tools (like SP Flash Tool) cannot communicate with the device in its base state.