OPPO A3s (CPH1803) , the "Firehose" file (or Qualcomm Programmer) is a specific piece of software used to communicate with the device's Qualcomm Snapdragon 450 chipset while it is in EDL (Emergency Download) Mode
Open your chosen flashing tool (e.g., QFIL). download firehose oppo a3s cph1803
The OPPO logo appeared. Not looping. Just… there. Then the Android setup screen. The one with the little waving hand. OPPO A3s (CPH1803) , the "Firehose" file (or