(Qualcomm) version. Flashing a firehose file meant for a different variant (like the MTK version) can permanently hard-brick the motherboard.
If you find the legitimate version (typically hosted on Google Drive or Pixeldrain), you get a .zip folder containing: download firehose oppo a3s cph1803 repack
uses a secure bootloader, standard firehose files often require specific "repacked" versions or specialized tools to function correctly Core Components & Downloads (Qualcomm) version