Flashing firmware does not always remove the Factory Reset Protection (FRP) lock. If you are locked out of your Google account after booting up, you will need to input your previous Google account credentials or use an FRP bypass method specific to ColorOS.
If the phone successfully flashes but still loops on the logo, boot into stock recovery (Hold Power + Volume Down during startup) and perform a "Wipe Data / Factory Reset".
Extract the downloaded package. Run the setup file ( .exe ) and follow the on-screen instructions to complete the installation. Extract and install the QPST Tool Suite .
Standardizes system files if your phone is stuck on the Oppo logo.
Double-check that all paths are mapped correctly in the tool.
Press and hold the for roughly 10–15 seconds until the device vibrates and displays the Oppo logo.
Unzip the QFIL tool and your downloaded Oppo A3s firmware folder. Launch QFIL: Open the QFIL application on your desktop. Load Firmware: Select Flat Build in the setup menu.
Your computer cannot flash the phone while it is turned on normally. It must be in EDL Mode. Power off your Oppo A3S completely.
Flashing firmware carries risks. This process may void your warranty. We are not responsible for any damage caused to your device by following this guide. Proceed at your own risk.
Click the "Load XML" button. In the window that opens, you will need to select all files beginning with rawprogram (e.g., rawprogram_unsparse0.xml , rawprogram1.xml , etc.). Hold the Ctrl key to select multiple files. After selecting them, click "Open". QFIL will then prompt you to select the corresponding patch0.xml file. Select this file and click "Open".