Once an eFuse is "blown" (set from 0 to 1), it cannot be reverted.
Traditional MTK bypass utilities (which exploit USB stack vulnerabilities) fail instantly because the chip drops the connection before executing the vulnerability exploit.
If you provide the specific SoC or vendor (e.g., MediaTek, Qualcomm, Allwinner, etc.), I can tailor the article with vendor-specific eFuse behavior, exact diagnostic commands, and example vendor-tool workflows.
Many Dimensity and newer Helio chips come from the factory with this fuse already set. Is there a workaround? brom disabled by efuse 0x146
Probably not. These tools work by exploiting bugs or authentication weaknesses in the BROM itself. When the BROM is physically disabled, there is no attack surface left. Tool developers have explicitly stated that there is currently no solution and they are still researching.
Use a reliable tool (Z3X, Pandora Box, SP Flash Tool, mtkclient) and ensure the USB connection is stable. The error should appear consistently.
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. Once an eFuse is "blown" (set from 0
Some tools can still work in if the device allows it. The Preloader is the first piece of code loaded by the BROM, and it still runs (otherwise the phone could not boot Android at all). In Preloader mode, you may be able to perform certain operations:
: Specifically refers to the boot process detecting that the BROM entry point has been hardware-disabled. Deep Content & Technical Impact Standard Bypasses Fail : Software-only bypasses (like mtk_payload_revived
Short these pads with tweezers while plugging in the USB cable. Many Dimensity and newer Helio chips come from
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.
The chip is forced to upon receiving an external device connection.
