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Guide to Flashing Opo A3s with MSM Download Tool
Important: The MSM download tool is an online flash tool and the firmware requires an Internet connection for Flash. So make sure you have enough data or internet connection during the firmware polishing process with the MSM download tool.
Do You Want MSM TOOL Download
Download and extract the OPPOA3s Flash file downloaded to any folder.
Enter the extracted folder and run “MSMDownload Tool.exe” as administrator. Here you need to login with the correct username and password. Otherwise, you can’t continue the flashing process.
[Use the premium version of the MSM download tool or do Google to activate the MSM download tool without a username and password]