Since the eFuse is inside the SoC, the only guaranteed hardware fix is to replace the MediaTek processor itself. This is cost-prohibitive and requires professional rework stations.
The presence of brom disabled by efuse 0x146 signals a turning point. MediaTek has learned from Qualcomm’s EDL (Emergency Download Mode) locking. Moving forward: brom disabled by efuse 0x146
For the modding community, this is catastrophic. For security, it’s a win – but at the cost of user freedom. Since the eFuse is inside the SoC, the
MediaTek provides authorized download agents (auth DA files) to OEMs. These files contain cryptographic keys that match the eFuse values. If you obtain the correct auth file for your exact device model and CPU, you can load it in SP Flash Tool and bypass the error. For the modding community, this is catastrophic
Practical step: In SP Flash Tool, go to Options > Authentication File and load the corresponding auth_sv5.auth file before connecting the device.
Date: October 26, 2023 Subject: Analysis of Boot ROM (BROM) Disablement via eFuse Configuration 0x146 Status: Informational / Security Advisory