Inside the MTK tab, look for the "OppOppo / Realme" module (often labeled as "OPPO/Realme" or just "OPPO"). Click on it to open the specific settings for Oppo devices.

⚠️ Disclaimer: This guide is intended for educational purposes and authorized repairs only. Unlocking a device without the owner's permission is illegal. Proceed at your own risk, as unlocking may wipe user data.