Oppo A3S CPH1803 Stock Firmware ROM (Flash File)


If you own the Oppo A3S CPH1803 device and you need to flash in the official Stock Firmware ROM. With the official ROM, you can get OTA Updates and another benefit the device manufacturing is giving to their users.

Oppo A3S CPH1803 Run on Android and it is Powered by Processor. it is a dual SIM (GSM) Smartphone that supports a Nano-SIM card. connectivity options include Wi-Fi, GPS, Bluetooth, USB OTG, FM 3G & 4G.

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Before you start to flash the Stock Firmware ROM, please make sure you make a back up of the previous ROM. A charged battery is required to be the process. We will not be responsible if anything goes wrong, Good luck.

However, it’s recommended to check for OTA updates manually on your device via the phone settings. Settings > About phone > Software updates > Check for Updates. If the new software update is available, then tap Download now.

  • File Size – 4.1GB
  • Android Version – 8.1
  • Country – Global
  • Filename – CPH1803EX_11_A.12_180927
  • Download ROM
  • Oppo_A3s_CPH1853_11_A.16_181022 : Download
  • authorized Oppo ID Require.
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How To Flash Oppo A3S CPH1803 Stock Firmware ROM Using Flash Tools.

There are various ways to flash stock ROM on a phone, for this phone use method 6

Follow the link below for the instructions on how to flash stock ROM