Cyanogen OS 12 was rolled out a few days back to the OnePlus One, was the update was then stopped to add the “Ok OnePlus” feature to the phone software. The latest Cyanogen OS 12 YNG1TAS17L brings this new addition to the OnePlus One phone and for those who are not able to install the update, we have a complete guide to help you guys out. You will need to have a custom recovery e.g. TWRP installed on your OnePlus One. A custom recovery will be needed to install Android 5.0.2 based Cyanogen OS 12 YNG1TAS17L update zip file, since this is how the OTA file has been retrieved — or you can wait for an update to arrive on your phone in the next few hours or later (may be days!).

If this is your very first time installing a an OTA update manually on this phone, we understand you would want to make sure your installation process go as smooth as possible. So before we actually jump to the installation process of Cyanogen OS 12 ROM, let’s take a look below at how to backup all your data. It is better to have a clean installation with no previous data, but since you would want to update from CM11S, please skip out the wipe data steps below in the tutorial. These are the some of the tips given below that we want you to keep in mind and then proceed.


Disclaimer: All the custom ROMs and firmwares, official software updates, tools, mods or anything mentioned in the tutorial belong to their respective owners/developers. We ( or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

Cyanogen OS 12 Android 5.0.2 Lollipop ROM Details:

UPDATE: CyanogenOS 12 YNG1TAS2I3 is now available for the OnePlus One. Download here!

This amazing Cyanogen OS 12 custom ROM comes with tons of new features and is based on Android 5.0.2 Lollipop with the all new Material Design. Several new apps have been redesigned and perform a lot faster on this phone. Check out these screenshots from Cyanogen OS 12 below.


There are tons of useful articles and how-to guides on Team Android for the OnePlus One, but we think you might be interested in the following posts:

Like this Cyanogen OS 12 ROM based on the latest Android 5.0.2? We love it too and we know you are looking forward to install it on your phone now. Now please read below for important tips on how to make sure your installation goes smooth and you do not end up with any problems.

OnePlus One USB Drivers

You will need to connect your Android phone with the computer. For that, please make sure you have installed the USB drivers for OnePlus One properly. If not, you can download the latest official drivers from our Android USB Drivers section here:

Download OnePlus One USB drivers!

Backup and Other Important Tips

Done with the USB drivers? Perfect. The tutorial is on the next page, but first, please take a look at the following tips and important points you need to take care of. These are important, as we don’t want anyone losing their personal data or apps:

Always backup your important data that you might need after you install a new custom ROM, an official software update or anything else. Make a backup for just in case, you never know when anything might go wrong. See below for some tips on how to backup data:

If you already have a custom recovery (ClockworkMod, TWRP etc.) installed on your phone, we strongly recommend a backup using that as it creates a complete image of your existing phone set up. It is easier and faster to restore your phone through a custom recovery.

A few more optional tips that you should remember:

1. Having problems connecting your Android phone to the computer? You need to enable USB debugging mode. See here: How to Enable USB Debugging — for Gingerbread, Ice Cream Sandwich, Jelly Bean, KitKat and Lollipop.

2. Make sure your Android device is charged up to 80-85% battery level. This might help you: How to Check Battery Percentage. Why? Because, if your phone goes off suddenly while installing a custom ROM, flashing an official firmware update or installing mods etc. — your phone might get bricked or go dead permanently. No one wants that, right?

4. Most of the tutorials and how-to guides on Team Android are for factory unlocked Android phones and tablets. We recommend NOT to try our guides if your phone is locked to a carrier, unless we have specified the carrier name or device model. And also make sure you have an unlocked bootloader (except Samsung).

If you find the above tips useful and they were helpful to you, please consider giving us a +1 or SHARE with others so they can also benefit from these tips!

All set and ready? Good. Now, let’s proceed with the tutorial on the next page and update OnePlus One to Cyanogen OS 12 YNG1TAS17L Lollipop software update.

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He lives on everything Android; has countless devices, apps and games to play with everyday. Currently serving as the Chief Editor at Team Android.

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