Hello po. Ask ko lang po sana kung paano pa kaya maunlock bootloader ng Oppo. Nag try nadin ako yung sa In-depth test kaso walang update doon hindi rin gagana yung sa developer option na usb debugging at unlock bootloader. Nagask din ako sa oppo support ito sinabi
Thank you for getting back with us.
With regards to this, we are sorry to inform you that OPPO don’t support rooting or modifying the system because it may result in the phone to freeze, auto restart or even totally dead. Same goes with the in depth test you are inquiring. We apologize for the inconvenience.
We advise using the device as it is,since it was already optimized when it was released for production.
Once again, we apologize for any inconvenience and we appreciate your patience and understanding on this matter. Please let us know if you have further questions and concerns.