Based on Android 6.0 Marshmallow, CyanogenMod 13 is finally available for quite a few devices and as you can see, your AT&T LG G2 is one of them as well. CM13 is an AOSP based ROM and brings near stock UI, Android 6 features, as well as CyanogenMod’s own features to your device, so I bet that you want to give it a try as well.
If you have been waiting to enjoy the latest of the team CM for a long time, here is how you can flash it on your AT&T LG G2, but note from the start that the currently CM13 is a Nightly build, so you might experience some instability, lags and bugs. Are you ok with that? Then, as always, root access and latest version of custom recovery (preferably TWRP or CWM) are both required to flash custom ROMs like CM13 on your device.
Then, you must also understand that the process will wipe off all the data stored on your LG G2. Therefore, before proceeding any further, please backup all your important data. And besides wiping your data, this process will also void your device’s warranty, but here you can find a guide that might help you with that: How to Restore the Warranty on your Android device.
Let me remind you that I won’t be liable for any damage to your AT&T LG G2 whatsoever. I won’t be held responsible if you brick your device or if something else bad happens to it while youflash the Android 6.0 CM 13 Marshmallow software, but it’s only your responsibility to assume. And even if you feel confident, it’s better to check the version of your phone and make sure that it is the d800 one. A mistake like this one could cost you more than you are imagining!
How to update AT&T LG G2 to Android 6.0 CyanogenMod 13:
- Start with the required files, so download CM13 Android 6.0 custom ROM for your AT&T LG G2 and save it on your computer; use this link for that;
- Then, you must take the GApps package as well be entering here;
- Connect your LG phone with your computer by using the original USB cable;
- Move the downloaded files on your phone;
- Disconnect the USB cord and power off the handset;
- Boot it into recovery mode by pressing and holding the usual Volume Up, Home, as well as Power buttons together for no more than a few seconds;
- I have already told you how important is to create a NANDROID ROM Backup, so don’t skip this step if you care about the safety of your data;
- From recovery menu, select wipe data / factory reset and confirm the process;
- You must also wipe cache partition and wipe dalvik cache;
- From recovery menu, select install zip from sdcard followed by choose zip from sdcard;
- Find the CM 13 Android 6.0 Marshmallow custom firmware and confirm the flashing process;
- Then, you must do the same for the Google Apps package;
Return to main recovery menu and reboot your AT&T LG G2 into the new custom ROM. Tfhe irst boot could take around 5 minutes if not even longer then that, so please be patient.