Brom Disabled By Efuse 0x146 Best Instant
"BROM disabled by efuse 0x146" is a security measure implemented by manufacturers (most notably on
6. How to Avoid This Error in the Future
| Prevention | Action |
|------------|--------|
| Never flash preloader from an unknown source. Uncheck PRELOADER in SP Flash Tool. | ✅ |
| Do not downgrade from Android 11 to 10 or 9 on MediaTek. | ✅ |
| Block OTA updates if you plan to flash custom ROMs. | ✅ |
| Backup full firmware (including preloader) before updating. | ✅ |
| Use MTK Client or SP Flash Tool readback before making changes. | ✅ |
For a deep dive into the hardware mechanisms and circuit tracing involved in fixing MTK boot issues: Fixing Brom Port in MTK During Flashing & Unlocking brom disabled by efuse 0x146 best
How to use:
It looks like you have encountered a specific hardware state, likely related to an Allwinner (sunxi) based device, such as an Android TV box, tablet, or development board (like Orange Pi or NanoPi). "BROM disabled by efuse 0x146" is a security
Here’s a guide to understanding and troubleshooting this issue.
This is MediaTek’s answer to unauthorized repairs, clone devices, and security exploits. Once this fuse is blown, the device can only be flashed using an authenticated, signed DA from the manufacturer. | ✅ | | Do not downgrade from
: For many Vivo and Samsung MTK devices, you must select the specific model in your tool and use a "Custom Preloader" or "Custom DA" (Download Agent) file that is compatible with the new 2023+ security patches. VBOOT/Meta Mode : Some operations can still be performed in Factory Mode , which do not require the BROM exploit to function. Hardware Test Points
Because this is a hardware-level restriction, software-only tools often "hang" or fail. Here are the primary methods used by technicians to bypass this: 1. Preloader Mode Flashing
