To unlock 1For the 2 version of the OPPO phone, you usually need to follow these steps:
Back up your data: It is important to back up your phone data before doing any unlocking operation as the unlocking process may lead to data loss.
Enable developer options
Open the Settings app.
Swipe to "About Phone" and tap it.
Tap "Version Number" several times until you get the prompt "You have become a developer".
Enable OEM unlocking and USB debugging
Go back to the Settings menu.
Go to "Additional Settings" or "System" (depending on your OPPO version).
Find "Developer Options" and open it.
In Developer Options, enable OEM Unlock and USB Debugging.
Unlock the bootloader
The use of ADB and fastboot tools is usually required. These tools are part of the Android SDK and can be downloaded from Google's Android developer***
Connect your phone with your computer and enter the relevant command in the terminal or command prompt, egfastboot oem unlock
Follow the instructions to complete the unlocking process
A prompt may appear on your phone's screen asking you to confirm the unlocking operation. Use the volume keys to select "Yes" and press the power key to confirm.
Once unlocked, the device may restart automatically.
Precautions
Unlocking the bootloader usually voids the warranty.
This can increase the security risk as it allows the installation of unofficial firmware.
Different models of OPPO phones may have slightly different unlocking steps.
If you are not familiar with these operations, or have any questions about the unlocking process, it is recommended to consult a professional technician or contact OPPO customer service for more specific guidance. Unlocking the bootloader is an advanced operation that can damage your device if done incorrectly.