Brom Disabled By Efuse 0x146 — Best
: Avoid external USB hubs or front-facing chassis panels. Plug your cable directly into the high-powered USB 2.0 (Black) motherboard ports located at the rear of your desktop computer.
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If software methods fail, some devices require opening the phone to locate on the motherboard. This allows users to physically force the device into a mode that ignores the eFuse status, allowing for temporary flash access. Frequently Asked Questions
"BROM disabled by efuse 0x146" is a security measure implemented by manufacturers (most notably on
: Many traditional bypass tools cannot re-enable BROM once this fuse is set, making standard "one-click" bypasses ineffective on newer security patches. Best Solutions and Workarounds brom disabled by efuse 0x146 best
: Open the device back cover to locate the physical on the motherboard. Connect these points to an interface box like EasyJtag Plus Medusa Pro II
Demystifying "BROM Disabled by eFuse 0x146": The Best Fixing and Bypassing Methods
Carefully solder fine enamel wires from the hardware box interface to these test points.
:Use updated versions of tools like MTK Client , Pandora , or UnlockTool . These tools have specific scripts to "handshake" with the Preloader and force the device into a state where it can accept commands despite the blown efuse. : Avoid external USB hubs or front-facing chassis panels
Manufacturers want to prevent unauthorized flashing or FRP (Google Lock) removal.
| Attempt | Success? | |---------|-----------| | Reinstall drivers | ❌ No | | Use different USB cable/port | ❌ No | | Try older SP Flash Tool | ❌ No | | Use "Authentication Bypass" tools (e.g., MTK Bypass Utility) | ❌ No (most cases) | | Replace the motherboard/CPU | ✅ Yes | | Use | ✅ Yes (rare, expensive) | | Use factory auth server (SLA/DAA unlock) | ✅ Yes (requires leaked server certs/tokens) |
Because this is a hardware-level block, standard software "fixes" rarely work. However, community developers often find alternative entry points: Blown eFUSEs and disabling reading - NXP Community
This error most frequently appears on devices with status. Even if you have the correct firmware, the device will refuse to flash because the "Chain of Trust" has been restricted at the hardware level. This link or copies made by others cannot be deleted
The best way to resolve the "BROM disabled by efuse 0x146" limitation is to like Chimera Tool, Pandora Box, or UnlockTool. Understanding the eFuse 0x146 Lockout
The answer is (Secure Layer Authentication and Download Agent Authentication). Starting with Android 10 and widespread on Android 12/13 devices, OEMs began burning these efuses at the factory.
Carefully remove the back cover of the phone and the logic board shields.
The error BROM disabled by Efuse [0x146] appears in the logs of professional flashing tools like Pandora Box or Miracle Box when technicians try to connect to a device. It indicates that the manufacturer has permanently disabled access to the device's BROM (Boot ROM) mode.
