OxygenOS 2.2.1 update for OnePlus X is now available, which includes many bug fixes, optimizations and latest security patches. Based on Android 5.1.1 Lollipop, OxygenOS 2.2.1 will fix data leak while roaming, microphone mute issue on Google Hangouts, Google search bar and app drawer issue, and few other issues.
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.
Fix for data leak while roaming experienced in some regions
Fix for microphone being muted when using Google Hangouts
Fix for app drawer not launching when Google search bar is hidden
GMS 3.0 upgrade
APN update to support Tigo carrier
Security patch update
General bug fixes and optimizations
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
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)