Brom Disabled By Efuse 0x146 Today

The error code “Brom disabled by Efuse[0x146]” points to a very specific eFuse that MediaTek—and more importantly, the —can blow to disable the BROM entirely.

Forensics and data preservation

A few persistent myths circulate around the eFuse 0x146 error: brom disabled by efuse 0x146

Disconnect the device battery to completely reset the power state.

When you should use WebSearch or vendor docs The error code “Brom disabled by Efuse[0x146]” points

The error message represents one of the most rigid security roadblocks in modern smartphone servicing, particularly on MediaTek (MTK) powered Android devices like Samsung Galaxy A-series models. If you encounter this status in service tools like Chimera Tool, Pandora Box, or UnlockTool, it means the device's deepest hardware-level backdoor has been permanently locked out.

To help pinpoint the right solution for your device, what is the of the phone you are working on, and which service tool are you currently using? If you encounter this status in service tools

When a flashing tool detects 0x146 , it means the chip's internal eFuse array has been hard-burned to . The device explicitly blocks any raw, low-level read or write commands to the processor before the Preloader stage runs. Why do OEMs blow this fuse?

Employ updated premium tools using specific model exploits tailored for Preloader operations. No USB detection at all.

Rarely, eFuse only affects USB BROM, not JTAG. But on modern MTK, both are fused.

From a hardware security perspective, the eFuse check is performed . The BROM code is immutable (by definition, it is read‑only). The following steps happen in hardware, within microseconds of power‑on: