The error indicates that your MediaTek (MTK) device has a permanent hardware-level lock that prevents traditional "BROM mode" exploits.
Use modern tools via ; do not force BROM combinations. FRP/MDM Lock Removal Preloader active, security active. brom disabled by efuse 0x146
Tools like Mi Flash (for Xiaomi) or specialized service software require an active internet connection to authenticate with corporate servers. The error indicates that your MediaTek (MTK) device
An is a microelectronic fuse embedded inside the silicon of the CPU. disabling BROM download mode is a
From a manufacturer’s perspective, disabling BROM download mode is a , not a bug. Reasons include:
What (e.g., SP Flash Tool, UnlockTool) are you currently using?
Rarely, eFuse only affects USB BROM, not JTAG. But on modern MTK, both are fused.