Oppo A3S CPH1803 Firmware Flash File ROM

Download Stock ROM for Oppo A3s CPH1803 (CPH1803)

Below you will find the official & unofficial Stock Firmware for the Oppo A3s CPH1803. You can use this ROM to flash your device using compatible tools.

Stock Firmware for CPH1803

  • Firmware Version: CPH1803EX_11_A.24_191225_27fe4659_()
  • ROM Type: Service ROM
⬇ Download ROM

Stock Firmware for CPH1803

  • Firmware Version: CPH1803EX_11_A.24_191225_27fe4659_
  • ROM Type: Service ROM
⬇ Download ROM

Stock Firmware for CPH1803

  • Firmware Version: CPH1803_EX_11_A.12_180927_()
  • ROM Type: Service ROM
⬇ Download ROM

How to Install Stock ROM on Your Oppo A3s CPH1803

follow the instructions below to install official stock firmware on your oppo device.
  1. Download latest firmware from above links.
  2. Charge the device at least 50%.
  3. Download & Install O + USB Driver on your PC.
  4. Extract the downloaded ZIP file to a folder.
  5. Boot your device into Fastboot mode (Power + Volume Down).
  6. Download & Open O + Service Tool on your PC.
  7. Login With O+ service ID
  8. Click Flash Service
  9. Click Manage Firmware package
  10. Browse & select extracted ROM folder
  11. Click \'START\' button
  12. Connect your device to your PC via USB by holding Volume up + down button at same time.
  14. Wait until the process completes, the device reboot itself.
  15. have any trouble?, Contact us for Professional help, Tool Login, Auth, Region change.