Download and Install Stock ROM On Oppo A3S (CPH1803EX) [Official Firmware]: The stock firmware file name is CPH1803EX_11_A.03_180720_88dff542.zip. The firmware file is around 4.3 GB in size. The stock firmware is based on Android 8.0 Oreo. The ROM is only for Oppo A3S which is powered by 1.8 GHz Cortex-A53 octa-core Qualcomm SDM450 Snapdragon 450 The official Stock […]
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