Efuse 0x146 Best | Brom Disabled By
The error message "BROM disabled by efuse 0x146" indicates a permanent hardware-level security lock on your device's MediaTek (MTK) processor. This typically occurs on newer devices (especially Vivo, Samsung, and Motorola) where the manufacturer has physically "blown" an electronic fuse (eFuse) to prevent unauthorized access to the BootROM (BROM) mode.
Security Update: This is part of a "new security" patch level (often cited from 2022 onwards) designed to prevent unauthorized firmware flashing, FRP (Factory Reset Protection) removal, and bootloader unlocking. Potential Solutions & Workarounds brom disabled by efuse 0x146 best
- Auth file (
.author.bin) - SLA/DAA token
- EMI file for the specific model
- Security lockdown after a verified boot chain
- Anti-rollback or fuse-based protection triggered
- Manufacturing test mode exit or debug disable
: These paid tools frequently update their loaders to handle "BROM disabled" devices, sometimes without needing a test point by exploiting vulnerabilities in the preloader. MTK Bypass Utility (Legacy) The error message "BROM disabled by efuse 0x146"
In this comprehensive guide, we will break down what this error means, why it is different from previous security mechanisms, and—most importantly—the best known methods to resolve or work around it. Auth file (