Oppo A37f safe format user data successfully done by Hydra Tool
1. Run Qualcomm Tool of Hydra.
2. Choose Module and Brand
3. Choose "Service"-->"Universal" Tab.
4. Choose "Format / Factory Reset" from drop down menu.
5. Choose "Auto" from flash mode.
6. Click on "Execute"
7. Connect device to the computer with USB Data Cable.
8. Wait until the operation is complete
Screen Short:2. Choose Module and Brand
3. Choose "Service"-->"Universal" Tab.
4. Choose "Format / Factory Reset" from drop down menu.
5. Choose "Auto" from flash mode.
6. Click on "Execute"
7. Connect device to the computer with USB Data Cable.
8. Wait until the operation is complete
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