OxygenOS 2.2.1 starts to roll out for the OnePlus X
Last month, the OnePlus 2 received an update to OxygenOS 2.2.1. The update didn't bring Android 6.0, but did carry RAW photography support. Today, OxygenOS 2.2.1 has started rolling out to OnePlus' form over function model, the OnePlus X. Again, no Marshmallow appears on the update, not even a little taste.
What does come with OxygenOS 2.2.1 is a number of bug fixes, a security patch update, and a few specified changes. One of these includes the elimination of a data leak that appeared in some regions when users were roaming. Another repair job was done to the microphone, which was muted by accident whenever Google Hangouts was being used. The update also resolved an issue with the Google search bar that prevented the app drawer from launching whenever the search bar was hidden. With OxygenOS 2.2.1 installed, the OnePlus X will support wireless operator Tigo.
The update is being sent out OTA in waves; if you don't get it today, don't pout. Eventually, you will get the update. And you can manually check to see if it has arrived on your phone by going to the Settings on your OnePlus X.
source: OnePlusforums via AndroidCentral