CM12s Android 5.0 Lollipop update (YNG1TAS17L) is already out now for the OnePlus one users. Here in this guide we’ll show you the proper way to install the Lollipop update on OnePlus one. This guide is for those whom currently run stock CM11S, CM12 Nightly, Oxygen OS or any other Custom ROM. The guide is pretty simple and takes a few minutes to update you oneplus with (YNG1TAS17L) CM12S update. This guide is for all rooted users, with custom recovery or Non-rooted user with Stock Recovery.This process involves nearly zero technical knowledge, it is safe, simple and only manually activates the OTA update file! The best part of this guide is we’ll show you all the steps one by one with the images. So it will be easy for all the new users to update the device.
Before following this guide Make sure your phone is charged, above 50% and backup all of your data. (It will NOT erase your data or phones contents, but for safety reason take the full backup)
Read Also: List of Best Oneplus One Lollipop Custom ROMs and Installation Guide
Read Also: Guide To Fix OnePlus One CM 12 Problems
Read Also: Guide to Rollback to CM11s from CM12S on OnePlus One
Read Also: Root, Unroot, Unlock, Restore OnePlus One with Wugfresh ToolKit
Cyanogen OS 12
Update OnePlus One to Cyanogen OS 12 (CM12S )Lollipop using Stock recovery
If you are the non-rooted user with stock recovery then follow the below mention guide.
Step 1. Reboot your Phone in stock recovery. Switch off your phone and “Power” button AND “Volume Down” button until the phone responds.
Step 2. Welcome into Recovery! Simply select “Apply Update” by touching the screen accordingly.
Step 3. At this screen simply touch “Choose from internal storage”
Step 4. At this screen we need to select our storage device, which should be “0/”
Step 5. Your download should be located in the “Download/” folder. If you chose a different location please follow the appropriate directory tree to point to the OTA file!
Step 6. Simply touch the file we downloaded, “cm-12.0-YNG1TAS17L-bacon-signed.zip” and the installation process will start on your phone.
Step 7. Once the installtion process is completed, go to main page and ‘wipe cache partition‘.
Step 8. After that choose “Reboot System Now”.
The first boot will take some time, once the phone is booted you will see the new CM12S rom on your One plus one.
Update OnePlus One from Oxygen OS or Any other Custom ROM to Cyanogen OS 12 using TWRP
This guide is for all the rooted user with TWRP recovery or Oxygen OS user, CM 111S rooted user or any other Custom ROM user with TWRP recovery.
Step 1. Reboot your Phone in TWRP recovery. Switch off your phone and “Power” button AND “Volume Down” button until the phone responds.
Step 2. Now you are on the main screen of TWRP recovery. From here tap on the “Wipe” button.
Step 3. Now tap on Advanced Wipe
Step 4. Select “Dalvik cache, System, Data and Cache“. Then swipe to wipe.
Step 5. Go back to Home screen, select Install and then choose the “cm-12.0-YNG1TAS17L-bacon-signed.zip” Your download should be located in the “Download/” folder. If you chose a different location please follow the appropriate directory tree to point to the OTA file!
Step 6. Once installation is over, Reboot System.
You now are running Cyanogen OS 12 YNG1TAS17L Adroid Lollipop !