Oppo A12 (CPH 2083) Formatting user data successfully done by Hyda Tool
1. Run MTK Tool and choose "Sosc"
2. Choose Brand and Module.
3. Go to "Service"–> "Tool"
4. Choose "Factory Reset / Format user data" from universal Operation
5. Choose "Erase 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:2. Choose Brand and Module.
3. Go to "Service"–> "Tool"
4. Choose "Factory Reset / Format user data" from universal Operation
5. Choose "Erase 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.

BR
Mount Everest
Mount Everest