The manufacturer has blown the eFuse to enable .
:Use updated versions of tools like MTK Client , Pandora , or UnlockTool . These tools have specific scripts to "handshake" with the Preloader and force the device into a state where it can accept commands despite the blown efuse. brom disabled by efuse 0x146 best
You don't hold volume buttons to force BROM. Instead, you let the phone start its initial boot sequence (Preloader) and "handshake" with the tool there. The manufacturer has blown the eFuse to enable