Using official service tools (like MiFlash for Xiaomi or Odin for Samsung) with an authorized technician account can sometimes still write to the device.
is a specific status code indicating that the hardware-level "SLA" (Serial Link Authentication) and "DAA" (Download Agent Authentication) are strictly enforced.
Locate the small gold pinout labeled (Clock), CMD , or GND (Ground) meant for forcing BROM. brom disabled by efuse 0x146
As more brands adopt this technology, the golden age of “simple test‑point unbricking” on MediaTek is likely coming to an end. The BROM may still be alive in older devices, but for newer ones, the door is now permanently locked, and eFuse 0x146 is the key that turned in the lock.
If you are trying to unbrick, flash, or bypass the security on a MediaTek (MTK) powered smartphone and encountered the error message , you have run directly into a hardware-level security lock. Using official service tools (like MiFlash for Xiaomi
: This status prevents third-party tools (like older versions of SP Flash Tool) from flashing or reading the device memory via the USB VCOM port because the chip requires a signed "handshake" to proceed. Context in Documentation
While there is no "magic button" to un-blow a fuse, the community uses these advanced methods: As more brands adopt this technology, the golden
Sometimes, if the preloader region is partially overwritten but the system remains locked, the BROM may still attempt to boot, find a mismatch, and then report 0x146 as a generic security violation.
"brom disabled by efuse 0x146" refers to a hardware-level security state in MediaTek (MTK) system-on-chips (SoCs), such as the Helio P35 (MT6765) Technical Meaning is a specific status code read from the BootROM (BROM) eFuse register (typically at address 0x11c50060 ). This code indicates that the Secure Boot SLA (Serial Link Authentication)
: Ensure the device has at least 50% battery before attempting Preloader or Test Point flashing.
Ensure your flashing tool is set to "Preloader" instead of "BROM."