OnePlus started to distribute the OxygenOS 2.2.1 OTA (over the air) update for OnePlus X and you will receive the update notification soon on your OnePlus X. As the update roll out in phases it will take some times to reach the update on your device, so be patient. Also, note that this is an incremental update, so your device should be running on OxygenOS 2.2.0 to apply the update. Below are the whole changelog of this new system update. OxygenOS 2.2.1 is an incremental update and it just weighs 284 MB only. Below are what is new in this update. Regarding the Android 6.0 Marshmallow (OxygenOS 3.0) update, still it is unclear when the device gets Android 6.0 Marshmallow update. However, recent developments shows that you do not need to wait too long to get the OxygenOS 3.0 update on your OnePlus X Now, if you would like to manually update your OnePlus X to OxygenOS 2.2.1, folks over at OnePlus forum has managed to capture the update and made available for download To update manually, download OxygenOS 2.2.1 OTA Zip file [HERE]/ [HERE] [Source] and save it on your phone’s internal memory. Boot your OnePlus 2 into stock recovery by pressing and holding Volume Up and Power buttons together. Select ‘Apply update’, browse for the zip file that you saved in step 1, select it and confirm installation. Once done reboot your phone (Source – OnePlus Forum)
