Brom Disabled By Efuse 0x146 May 2026

The short answer is no for standard tools and methods. The long answer is nuanced.

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:

For the modding community, this is catastrophic. For security, it’s a win – but at the cost of user freedom.

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:

[ERROR] : BROM disabled by eFuse 0x146 (Secure debug disabled)

The technician tried three different DA files without success. Then, using the official Infinix authorized auth_sv5 file obtained from the service center, the tool successfully handshook with the BROM, bypassed the eFuse check completely, and allowed a full firmware download. The key takeaway: Authorization, not hardware modification, is the official solution.

The causes of this error can vary, but common scenarios include:

brom disabled by efuse 0x146

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brom disabled by efuse 0x146

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The short answer is no for standard tools and methods. The long answer is nuanced.

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:

For the modding community, this is catastrophic. For security, it’s a win – but at the cost of user freedom.

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:

[ERROR] : BROM disabled by eFuse 0x146 (Secure debug disabled)

The technician tried three different DA files without success. Then, using the official Infinix authorized auth_sv5 file obtained from the service center, the tool successfully handshook with the BROM, bypassed the eFuse check completely, and allowed a full firmware download. The key takeaway: Authorization, not hardware modification, is the official solution.

The causes of this error can vary, but common scenarios include: