Download MSM Download Tool (Oppo's official flashing utility) or use a premium multi-tool interface like the UMT (Ultimate Multi Tool) QC Fire Tool or UFI Android Toolbox . Step-by-Step Guide to Flashing Oppo A57 Step 1: Set Up the Computer Environment
The firmware package typically includes the Oppo MSM Download Tool . Alternatively, you can use the official QFIL (Qualcomm Flash Image Loader) tool, which is part of the QPST suite. Step-by-Step Guide to Flash Oppo A57 (CPH1701) Step 1: Install the Qualcomm Drivers Download the Qualcomm USB Driver package to your PC. oppo a57 cph1701ex-11-a.35 flash file
If you want to ensure a smooth configuration, please let me know: What your PC runs (Windows 10, 11, etc.)? oppo a57 cph1701ex-11-a.35 flash file