Oppo A3S CPH1803 Firmware
Unlock First, When flash failed Click Here
How to Flash Oppo A3S CPH1803 Firmware via QFIL Tool? Almost every android would be a problem like bootloop, hang, and slow response. And for example, it happened on your Oppo, you can try to flash with this firmware file ROM, to solve the problem. With a flawed Oppo A3S flash will come back to fresh and normal again.
Because the firmware that has been replaced with Oppo A3S flash file stock ROM fresh without error. All you need to know is to backup the data in internal memory. Because this flash will wipe all data in the memory.
With this tutorial How to flash Oppo A3S CPH1803 Firmware via QFIL Tool, you can also solve other error problems, such as:
- Forgot Password
- Stuck on Logo
- Forget Pattern
- Oppo A3S Bootloop
- Soft Brick
- Blank Screen
- The touch screen is not sensitive
- Slow not responsive / Hang
- Virus malware
- Unfortunately, the app has stopped
- Oppo often restarts itself
- And other errors
Read Also: How to Flash Oppo A3 CPH1837 Firmware via DownloadTool
Tools and Firmware Download
- Qualcomm Driver for Oppo A3S CPH1803
- QFIL Tool
- Download firmware CPH1803EX_11_A.03_180720_88dff542_QFIL.rar stock ROM via Google Drive – for A3S CPH1803 ONLY
- Bypass Limit Google Drive Work Tutorial follow Bypass Google Drive Download Limit (Quota Exceeded) Error
Read Also: Flash Oppo A11
How to Flash Oppo A3S CPH1803 Firmware via QFIL Tool
- First of all, get all tools and extract them into one folder.
- Install the Qualcomm Driver. If the installation failed, you need to install it manually from the device manager.
- Open the QFIL Tool.
- Make sure the Qualcomm Driver for QFIL is installed correctly and detected on the device manager (COM6 port is my device, may be different on your PC).
- If the installation failed, try this method:
Turn off your device, hold Volume Up + Volume Bottom, and plug your Oppo into PC, wait till the driver installed and the device detected. This will appear on the QFIL COM port.
- Extract the Oppo A3S firmware and make sure you see a file with a .mbn format, similarly as for files like prog_emmc_xxx.mbn, also the important files are rawprogram0.xml or rawprogram2.xml and patch0.xml. Those 3 files are very important (prog_emmc_xxx.mbn, rawprogram0.xml, and patch0.xml), and sometimes the files are not included on the ROM flash file pack, you need to find them manually via google or XDA forum.
- Click menu Flat build then click menu Browse, find the Oppo Stock ROM where you extract.
- Find the files prog_emmc_xxx.mbn, then open the .mbn file.
- Click menu Load XML, you will see the file like rawprogram0 with XML format, click open and next click patch0 with the same format and last click open again.
- After all ready, click the Download button and wait to flash the firmware.
- This process usually taking 5-10 minutes.
- Flash finish will show messages “Download Succeed” and “Finish Download” on the tab menu Status.
- Unplug the cable and turn on your device.
- First booting after flash will take 5-10 minutes. So, just wait until entering the wizard menu.
- Finally, flash Oppo done.
Read Also: Firmware Oppo 6607 U3
With this tutorial on How to Flash Oppo A3S CPH1803 Firmware via QFIL, you will get a fresh ROM without errors.
