Use a reliable tool (Z3X, Pandora Box, SP Flash Tool, mtkclient) and ensure the USB connection is stable. The error should appear consistently.
For truly bricked devices where BROM is disabled, the only remaining option is (In‑System Programming). This involves physically desoldering the eMMC or UFS flash chip from the mainboard, reading/writing it with a dedicated programmer, and then soldering it back.
She stared at the cryptic line. "BROM" meant Boot ROM—the very first code the CPU runs, baked into silicon. "Efuse" was a one-time programmable memory inside the chip, like a digital fuse that could be blown permanently to change behavior. And 0x146 ? That was an address or status code. brom disabled by efuse 0x146
An eFuse is an electronic fuse that can be “blown” (programmed) exactly . After that, its state cannot be changed. In modern System‑on‑Chips (SoCs), eFuses are used for various purposes:
: Instead of using the traditional Volume button combinations to trigger BROM, connect the device normally without holding any buttons, allowing it to boot into Preloader mode. Use a reliable tool (Z3X, Pandora Box, SP
Based on numerous community reports, here are some of the most common devices that throw the “Brom disabled by Efuse[0x146]” error:
ISP is ; it requires specialised hardware, micro‑soldering skills, and carries a high risk of permanently destroying the device. It is only practical for very high‑value data recovery or specialised repair centres. Even then, ISP cannot bypass the BROM itself—it just gives direct access to the flash storage. This involves physically desoldering the eMMC or UFS
Manufacturers (like Xiaomi, Samsung, Oppo, and Vivo) disable BROM to prevent "unauthorized" software modifications. By blowing this fuse, the OEM ensures:
This error marks a fundamental shift in Android hardware security, hardware-level tracking, and anti-tamper mechanisms. Understanding this error requires looking closely at why it happens, what it means for device repair, and how to work around it. 1. What is BROM?
The error message is a critical security status encountered on MediaTek (MTK) devices, signifying that the low-level Boot ROM (BROM) mode has been intentionally and permanently locked by the processor's hardware . The Mechanism: eFUSE and BROM