Subject: [BROM Disabled] Stuck on Error 0x146 (eFuse Lockout)
If you cannot bypass 0x146, what options remain?
Authorized Accounts: Some devices require an official service account to flash via "Download Mode" or "EDL" instead of BROM. brom disabled by efuse 0x146
A technician received an Infinix Note 12 (Helio G99) with a corrupted software partition. When connecting to SP Flash Tool v5.21, the log showed:
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. Subject: [BROM Disabled] Stuck on Error 0x146 (eFuse
Replace/repair the eFuse-reading component (rare)
Before looking at solutions, understand that certain common troubleshooting steps will absolutely not work for this specific hardware lock: When connecting to SP Flash Tool v5
eFuse is an electronic fuse that is used in many modern devices, including those with MediaTek chipsets. It's a mechanism that allows the device manufacturer to control and configure various aspects of the device's behavior, including the boot process. eFuse can be used to disable certain features or components of the device, effectively bricking or rendering it unusable if needed.