According to the changelog mentioned on the Realme community post, the November 2021 OTA update for the Realme 6 and Realme 6i brings the Android security patch level to November 2021. It should fix over a dozen of system security and privacy-related vulnerabilities. The new software update also brings optimizations to the system performance and system stability. It is rolling out with the firmware versions RMX2001_11.C.15 and RMX2002_11.C.15, respectively, for Realme 6 and Realme 6i.
As always, the new software update is rolling out in a staged fashion. It means that the update will initially reach a small number of users, followed by a broader rollout in the coming days. Both, Realme 6 and Realme 6i have been released last year with Android 10 on board. This year, the devices were got upgraded to Android 11 OS. [source 1, 2]
