Oppo A37F (Neo 9) formatting user data succcessfully done by Hydra Tool
1. Run Qualcomm Tool and choose "Sosc"
2. Choose Brand and Module.
3. Go to "Service"--> "Universal"
4. Choose "Auto" from "Format / Factory Reset" of drop down menu
5. Click on "Execute"
6. Connect device to computer using USB Data Cable.
7. Wait until the operation is completed.
Screen Short:
1. Run Qualcomm Tool and choose "Sosc"
2. Choose Brand and Module.
3. Go to "Service"--> "Universal"
4. Choose "Auto" from "Format / Factory Reset" of drop down menu
5. Click on "Execute"
6. Connect device to computer using USB Data Cable.
7. Wait until the operation is completed.
Screen Short: