Oppo A3s Qfil Firmware Cph1803 Qfil Flash File Link Page
Click Browse and select the .elf or .mbn Firehose loader file (e.g., prog_emmc_firehose_8953_ddr.mbn ) from the firmware folder. Load XML: Click Load XML and select rawprogram_unsparse.xml . Then select patch0.xml when prompted.
If QFIL throws a "Sahara Error," it usually means the communication link timed out. Disconnect the phone, force a restart by holding Power + Volume Up for 10 seconds, close QFIL, open QFIL again, re-enter EDL mode, and retry the flash immediately. Try using a USB 2.0 port instead of a USB 3.0 port.
Once opened, look at the top of the tool. It should automatically detect your device as Qualcomm HS-USB QDLoader 9008 (COMx) . Under , choose Flat Build .
Install the Qualcomm HS-USB QDLoader 9008 drivers on your Windows PC. oppo a3s qfil firmware cph1803 qfil flash file link
Open the extracted folder and verify that you see the following critical files:
| Source / Website | File Name / Version | File Type / Size | Notes / Compatibility | | :--- | :--- | :--- | :--- | | | CPH1803EX-11-A.03-180720-QFIL.tar | QFIL ROM / 4 GB | One of the earliest and most stable QFIL versions for the CPH1803. | | unofficialtwrp.com | CPH1803EX_11_A.24_191225 | Service ROM | A more recent version that can be flashed with QFIL or other compatible tools. | | romprovider.com | CPH1803EX_11_A.24_191225_27fe4659_ | Stock ROM | A good intermediate firmware version. | | needrom.com | CPH1803_EX_11_A.33_201209 | Official ROM / Approx. 2.1 GB | A later official version, often requiring login to download on Needrom. | | getdroidtips.com | CPH1803EX_11_A.19_190717 | Firmware | Hosted on MediaFire; a reliable, community-tested version. | | onfix.cn (Chinese) | CPH1803EX_11_A.35_220815 | Official line-brush package | A very late official build, may be more relevant for advanced users. | | Oppo Malaysia Support | CPH1803EX_11_A.34 | OTA / 2.1 GB | Official OTA update file (.ozip). Not directly flashable with QFIL ; for OTA updates or recovery. |
This guide applies exclusively to the Qualcomm-based Oppo A3S (CPH1803). Do not attempt this on MediaTek variants. Computer: A Windows-based PC (Windows 7, 8, 10, or 11). Click Browse and select the
Look at the top of the QFIL window. It should display . If it says "No Port Available," click Select Port , choose your device, and click OK.
: Flashing firmware will erase all user data . Ensure your phone has at least 50% battery before starting to avoid power failure during the process. Tutorial Flash Oppo A3S (CPH1803) via QFIL Work
The flashing process typically takes between 5 to 10 minutes. Once finished, you will see a success message stating or "Finish Download" in the log window. Troubleshooting Common QFIL Errors If QFIL throws a "Sahara Error," it usually
Click Browse and select the .mbn file from the firmware folder (e.g., prog_emmc_firehose_8953_ddr.mbn ). XML File: Click Load XML and select rawprogram0.xml .
Wait for the progress bar to complete and for the message "Download Succeed" to appear.
is stuck on the logo, experiencing frequent crashes, or has been bricked due to a software error, flashing the stock firmware is often the best solution. Since this device is powered by the Qualcomm Snapdragon 450 chipset, you must use the Qualcomm Flash Image Loader (QFIL) tool for the flashing process. Pre-Flashing Checklist Backup Data
Double-check that all paths are mapped correctly in the tool.
This allows your Windows PC to communicate with your device in Emergency Download (EDL) Mode. : Qualcomm_USB_Driver_v1.0.zip Download Mirror Link : Download Qualcomm USB Driver 3. QPST Tool (Includes QFIL Utility)
