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.
Some premium software tools (like UnlockTool or MRT) have built-in server credits that handle this authentication in the background, bypassing the need for a physical BROM connection. Solution 3: Hardware Test Point (TP) brom disabled by efuse 0x146
This is not a software lock that can be bypassed with an exploit; it is a . The only way to change it would be to modify the BROM mask, which is impossible after the chip has been manufactured. This eFuse is part of MediaTek’s mechanism
Within MediaTek-powered smartphones (which are extremely common in budget and mid-range devices), BROM mode is used extensively by servicing tools like Pandora Box, Z3X, and mtkclient to perform firmware flashes, FRP bypasses, and IMEI repairs. The mode is typically accessible via test points on the motherboard or specific button combinations. Some premium software tools (like UnlockTool or MRT)
: If a device is stolen, physical access to the device usually allows a malicious actor to rewrite partitions via BROM. Disabling it ensures the factory reset protection (FRP) cannot be wiped by flashing tools. 3. The Technical Consequences