Brom Disabled By Efuse 0x146 __link__ Jun 2026

The BROM is a read-only memory chip inside MediaTek processors. It contains the very first code that runs when you power on the device. For developers and repair technicians, the BROM is essential because it allows for low-level communication via USB to flash firmware even when the Android OS is corrupted. The efuse 0x146

But if that next stage is corrupted? Or if you're trying to recover via USB boot, which the Boot ROM handles? The chip locks you out. No JTAG. No USB recovery. No second chance.

This is high-risk and can permanently damage the motherboard. ⚠️ Important Considerations Security Patches: Devices manufactured in 2023 and later brom disabled by efuse 0x146

Tools like , CM2MTK , or commercial boxes (Infinity CM2, Miracle Thunder) sometimes have built-in brute-force or authentication bypass scripts. These exploit known vulnerabilities in the BROM protocol before the eFuse check is fully enforced. For example, sending a specific sequence of USB commands might trick the BROM into thinking the debug fuse is still intact. However, modern chips have patched most of these exploits.

Do you have the of the device you're working on so we can look for a dedicated workaround? The BROM is a read-only memory chip inside

October 26, 2023 Subject: Analysis of Boot ROM (BROM) Disablement via eFuse Configuration 0x146 Status: Informational / Security Advisory

How to confirm the cause (diagnosis steps) The efuse 0x146 But if that next stage is corrupted

Legal and ethical notes