Oppo A83 (CPH1729) rebuilding user data successfully done by Hydra Tool
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1. Run MTK Tool and choose "Sosc"
2. Choose Brand and Module.
3. Go to "Service"--> "Tool"
4. Choose "Ultra Power Option"
5. Choose "Rebuilt User Data" from Method / Option drop down menu
6. Click on "Execute"
7. Connect device to computer using USB Data Cable.
8. Wait until the operation is completed.
2. Choose Brand and Module.
3. Go to "Service"--> "Tool"
4. Choose "Ultra Power Option"
5. Choose "Rebuilt User Data" from Method / Option drop down menu
6. Click on "Execute"
7. Connect device to computer using USB Data Cable.
8. Wait until the operation is completed.
Screen Short: