The update is exclusive to China only. The update is rolling out via OTA (Over the Air) to the Realme 6i and Realme 6s. So, it may some days to reach your smartphone. Alternatively, check the update status manually by heading to Settings -> Software update. This is a major bug fix update which addresses various bugs which were being reported after the previous update. It also promises to improve system stability and performance. Along with all the fixes, the update brings some optimization to the camera and charging. There are some new features added which you can check in the changelog below
Changelog
Security Update Android security patch (2020#12)
