Stock Rom For OPPO A3s (CPH1803)

OPPO A3s (CPH1803)


Unlocking the potential of your OPPO A3s (CPH1803) becomes a breeze with the power of Stock ROM. In this comprehensive guide, we’ll unravel the mysteries of Stock ROM, exploring its benefits, the installation process, and how it can transform your OPPO A3s into a seamless and optimized device.

Decoding Stock ROM: At its core, Stock ROM, or Stock Firmware, is the official operating system that comes pre-installed on your OPPO A3s. This tailor-made software provides the foundation for your device, ensuring stability, security, and optimal performance.

Benefits of Opting for Stock ROM:

  1. Stability Beyond Compare:
    • The Stock ROM is engineered for stability, creating a reliable platform for your daily smartphone activities.
    • Experience fewer crashes and glitches, providing a smoother user experience.
  2. Security Reinforcement:
    • Regular security updates are a hallmark of Stock ROMs, safeguarding your OPPO A3s against potential threats.
    • Enjoy peace of mind knowing your device is fortified against vulnerabilities.
  3. Optimized Performance:
    • Designed specifically for the OPPO A3s (CPH1803), the Stock ROM ensures efficient resource utilization, resulting in improved performance.
    • Apps launch faster, multitasking is seamless, and the overall responsiveness of your device is enhanced.
  4. Harmony with Official Updates:
    • Stay on the cutting edge with official firmware updates seamlessly integrated into the Stock ROM.
    • Access the latest features, optimizations, and improvements rolled out by OPPO for your A3s.

How to Install Stock ROM on OPPO A3s: Embarking on the journey of installing Stock ROM on your OPPO A3s may seem daunting, but fear not – the process is user-friendly.

  1. Backup Your Data:
    • Begin by backing up your important data to prevent any loss during the installation process.
  2. Download Stock ROM:
    • Visit the official OPPO website or trusted sources to download the Stock ROM firmware tailored for your OPPO A3s (CPH1803).
  3. Enable USB Debugging:
    • Navigate to your device’s settings and enable USB debugging to facilitate a stable connection with your computer.
  4. Install Flashing Tool:
    • Download and install the recommended flashing tool compatible with OPPO devices on your computer.
  5. Connect and Flash:
    • Connect your OPPO A3s to your computer using a USB cable and launch the flashing tool.
    • Follow the on-screen instructions to flash the Stock ROM onto your device.


In conclusion, delving into the realm of Stock ROM for your OPPO A3s (CPH1803) is a journey worth taking. With benefits ranging from enhanced stability and security to optimized performance and seamless updates, the Stock ROM becomes the backbone of your smartphone experience. Follow the outlined steps to install it effortlessly and unlock the full potential of your OPPO A3s. Elevate your smartphone journey today with the reliability and power of Stock ROM!



I. How to update OTA firwmare:

1. Once the download is complete, click on [Show in folder] then look for the software update file.

2. Connect your OPPO phone to your computer, then choose [Transfer Files]. On your computer, a pop-up will show then click on [Open device to view files].

3. Open the two folders on your computer, then drag the Software update file to the phone storage folder. Wait for it to finish transferring.

4. On your phone, go to [File Manager] > [Phone Manager] > then look for your device’s Software Package. Double-click on the file to download and wait for it to be done.

II. How to using OFP firmware:

Do the same as OPPO F5 Youth

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