The official CyanogenMod 12.1 Stable release is now available for the Galaxy Note 2 LTE devices. Check the instructions listed in this post and learn how to successfully flash the new custom ROM on your device.
The CM 12.1 Stable Release is based on the latest Android 5.1.1 Lollipop AOSP builds, so you should be getting all the vanilla Android improvements, as well as tons of extra features designed by the CyanogenMod team. Check the info here and here to learn all about this new official release.
As you already know the Stable Releases are the final builds and the best versions of CM 12.1 that you can run on your smartphone. If you want to install such custom ROM on your device, then you should first read the following guidelines:
- use this post only with the Samsung Galaxy Note 2 LTE devices.
- the models supported are the N7105, I317 AT&T and the T889 T-Mobile.
- do not try to update any other devices with the files that you will find in this post.
- your device needs to be on a rooted firmware and it should have a custom Recovery installed on it, too.
- the custom Recovery has to be updated to its latest version, so that it supports the latest Android 5.1.1 custom ROMs.
- in the tutorial part of this guide you will find two extra preparation steps: the NANDROID Backup and the Factory Reset.
- the NANDROID Backup creates a full restore point for your device, as it might become very helpful in case the new ROM doesn't boot in normal mode.
- the 'factory reset' process wipes clean the system partition, it removes the old ROM and it allows you to flash a CM 12.1 ROM instead.
- the 'factory reset' won't remove any data from the internal storage of your phone.
- if you need to save data from installed apps, then you should use the Helium app for Android.
- Contacts can be easily synced with your default Gmail account.
- use this tutorial only in case you are an advanced user, we cannot be held responsible in case you brick the device nor in case you lose any data files.
- read the whole guide and make sure not to skip any steps.
- check the battery charge level of your device and make sure that it is over 50%, it prevents your device from powering down during the installation and first boot process.
In case you want to continue using these types of CM 12.1 Stable builds on your smartphone, then you can keep updating the installed ROM from Settings> About Phone> CyanogenMod Updates menu.
Now that you know all that you can continue to the next part of this post.
How to flash CM 12.1 Stable Android 5.1.1 ROM for Galaxy Note 2 LTE "t0lte":
- Download the CM 12.1 SNAPSHOT ROM from here.
- Download Gapps for Android 5.1.1-based ROMs from here.
- Transfer both files to your phone's internal storage.
- after the files are moved you can disconnect the phone from computer.
- do not unzip the archived files.
- Switch off the Galaxy Note 2.
- Next, boot it in Custom Recovery Mode.
- Create a complete NANDROID Backup:
- CWM: select the 'backup and restore' menu.
- for TWRP you should select the 'backup' options menu.
- set a name for the file and confirm the process.
- Now you can 'factory reset' the device too:
- CWM: select 'wipe data/ factory reset'.
- TWRP users should open the 'Wipe' menu.
- confirm the process and continue to the next step when done.
- You can start the CM 12.1 Android 5.1.1 ROM install:
- CWM: select the 'install zip from sdcard', then the 'choose zip from sdcard'.
- for TWRP open 'Install'.
- Find the CM 12.1 SNAPSHOT zip and confirm the installation.
- When the Custom ROM was flashed you can install the Gapps zip in the same way.
- Reboot your phone in normal mode after you are done with the flashing processes.
Note that the first boot of CM 12.1 Android 5.1.1 ROM is going to take a while before it loads all the new files. In case you need any extra help completing this guide, then you can tell us in comments.
Also, if the installation fails, then you can keep trying to repeat the whole guide more than once. Make sure that your phone meets all requirements and that you won't skip any steps listed above.