Brom Disabled By Efuse 0x146 Jun 2026
+-----------------------------------------------------------------+ | BROM Mode is Disabled (0x146) | +-------------------------------+---------------------------------+ | +-----------------------+-----------------------+ | | v v [ META Mode Connection ] [ Preloader Flashing ] - Handled via Preloader - Utilizes custom DA/Auth files - Read/Write NV data - Bypasses BROM dependency - Factory resets & unlocks - Requires updated tool access 1. Utilizing META Mode
Mi Flash Tool (requires authorized account for newer models). Oppo/Realme: Oppo Download Tool or MSM Download Tool.
No. The test point method forces the chip into BROM mode by manipulating the boot pins. If the chip itself refuses to enter BROM mode because the eFuse is blown, no test point will bypass it. Technicians have confirmed that BROM will not appear even with test points on fused devices. brom disabled by efuse 0x146
In practice, the error appears in the logs of flashing tools after the tool has successfully initialised the chip, but just when it tries to gain deeper BROM access:
Modern MTK tools have a feature called "Preloader Exploit" or "EMI Bypass." Open your servicing tool (e.g., MTKClient or UnlockTool). Technicians have confirmed that BROM will not appear
Since the BROM interface is disabled, you must communicate with the device through the . The Preloader is the second-stage bootloader stored in the device's flash storage (eMMC or UFS).
This is high-risk and can permanently damage the motherboard. ⚠️ Important Considerations Security Patches: Devices manufactured in 2023 and later no test point will bypass it.
Historically, the BROM was the ultimate fallback mode for unbricking phones. If a user corrupted their operating system or recovery partition, they could bypass everything and force the phone into BROM mode to flash a fresh firmware image. 2. The Role of the eFuse (Value 0x146)
The error is not limited to a single brand or model. It appears across a wide range of MediaTek devices, usually from manufacturers that prioritise security over serviceability.
Because this is a hardware-level lock, you cannot undo the blown fuse. However, you can use alternative methods to flash your device or bypass the restriction depending on your phone model. Method 1: Use Preloader Mode Instead of BROM
