(SmartPhone Flash Tool) is the official software from MediaTek for flashing firmware (ROM) onto devices with MediaTek processors. Version 5.1924 is a stable, widely-used release that supports older (MT65xx, MT67xx) and many newer (MT68xx, MT8xxx) chipsets. It is primarily used to unbrick devices, upgrade/downgrade Android versions, or flash custom recoveries (TWRP).
A: You used “Format All + Download” without backing up nvram. Restore your nvram.bin via Readback, or use tools like Maui META or SN Writer. how to use sp flash tool v5.1924