This is the million-dollar question. Based on user reports from Realme Community forums:
If you’re looking for a (e.g., RMX2189_11_C.18), provide: rmx2189 ota update
: This major update introduced a "Global Theme" feature, allowing you to choose from 5 different color schemes and 10 single colors for the system interface. It also brought significant enhancements to privacy, such as the "Deep Sea Privacy Plan," which offers better control over app permissions and personal data. This is the million-dollar question
If you are running a custom ROM or have a rooted device, a simple OTA might fail. You can manually flash the OTA firmware using these methods: Using Custom Recovery Download the OTA zip file for the Official Realme Firmware Support Boot into recovery by holding Power + Volume Down Apply update from storage , navigate to your file, and flash it. If you are running a custom ROM or
Settings → System → System Updates → Check for updates
Once you have confirmed the update is available, follow this protocol to ensure a smooth installation without data loss.