: To use these files, you must put the phone into EDL Mode , which usually requires shortening the EDL Test Points on the motherboard while connecting the USB cable. Where to Find and How to Use
To summarize:
Legitimately, the correct DA file is included in (usually .pac format, which requires Vivo’s proprietary flashing tool). Unofficially, tech forums (e.g., ChinaGSM, Hovatek, Easy Firmware) share extracted DA files for use with SP Flash Tool.