Realme released December 2021 security patch for Realme Narzo 30 device, the update comes with system and stability improvements which also has optimization in the image quality of the rear camera, this update has a build number of RMX2156_11.C.16 with an update size of 544 MB
As seen previously, the devices had issues in the video & audio sometimes they didn't play and encountered wired noises as well during a call, the September 2021 update, had resolved this issue you can check below on the details in the previous post.
Realme Narzo 30 was launched on May 2021 with Android 11
Previous Post: Realme Narzo 30: September 2021 Security Patch | Updatify Now

Source: Realme Community
Note:
1. Once again, this is a phased roll out and will be available to all the users very soon. Kindly be patient and wait for the update on your device.
| Android OS | update | Released date/status |
| Android 11 | Out-of-the-box | May 2021 |
| Android 12 | First OS update | Eligible/unconfirmed |
| Android 13 | second Os update | – |
Till now there is no Major OS update release for Realme Narzo 30. It is released with android 11 in May 2021, so its first OS update will be Android 12 which is not yet confirmed.
Hence, it is Eligible for the upcoming Android 12 update as well. And it will probably be its last major OS update.
The Realme Narzo 30 security patch has been released in batches. A wider rollout to all the users is expected
Once the update is available on your device, you can head over to Settings >> About Phone >> Software Update section to update your Realme device with the latest update.
For more Realme Android updates please download our android app – available on the Play Store