The update brings January 2021 security patch, improved call performance, and some general fixes and improvements. You can check for the update manually by heading to Settings -> System -> System update -> Check for update. The OxygenOS 10.5.9 update for OnePlus Nord N10 5G is currently rolling out in Europe and North America. As usual, the OTA update is rolling out in batches, so you may need to wait for few days to get the update. You can also check for the update manually by going to Settings -> System -> System updates. The company will soon start to roll out this update to other regions also.
OnePlus Nord N10 5G OxygenOS 10.5.9 – Changelog
System Optimized power consumption Updated Android Security Patch to 2021.01 Network Further improved network stability
It’s worth mentioning that OnePlus has already released the Android 11 update to its flagship devices and hopefully, these mid-rangers will also get the update in near future.