Thanks to XDA member rgib,
Do read the instruction below very well to download the Unofficial CM13 Marshmallow 6.0.1 ROM and install it yourself with any errors
What You Need To Know
This CM13 Android 6.0.1 ROM is just meant for just Galaxy Note 8.0 LTE GT-N5120. Please do not try on any other Galaxy Note 8.0 variants.
•Your phone should be rooted and have Custom Recovery installed from before.
•This tutorial will wipe out all your data.Proceed at your own risk.Perform a Dalvik Cache wipe before proceeding from the recovery mode.
•Samsung KIES will NOT detect your phone after installing this ROM because it is a custom firmware.
•Make sure you backup all your data in your phone before proceeding.
Step 1 – Download Unofficial CM13 Android 6.0.1 Marshmallow ROM and Google Apps for your Galaxy Note 8.0 LTE GT-N5120 to your computer.
Step 2 – Connect and mount your Galaxy Note 8.0 USB memory on your computer using the USB cable.
Step 3 – Now copy/paste the downloaded Android 6.0.1 ROM zip and Google Apps zip files to your SD card. Make sure the files are in the SD card root (not in any folder).
Step 4 – Then turn OFF your phone and disconnect from the USB cable.
Step 5 – Now to get in the Recovery Mode. Switch ON the phone while pressing and holding Volume Up + Home + Power buttons together.
Step 6 – Once you are in ClockworkModRecovery, select perform a full data wipe by selecting “wipe data/factory reset” . Use the Power button to select everything while in the Recovery Mode.
Step 7 – Then, perform a cache wipe by selecting “wipe cache partition” .
Step 8 – Now this is optional, but it is recommended to perform a wipe of your dalvik cache as well. You will not get into boot loops or any other errors. From CWM recovery, go to ‘advanced’ and then select “wipe dalvik cache”.
Step 9 – Then go back to the main recovery screen and select “install zip from SD card”.
Step 10 – Now select “choose zip from sdcard”. Using your volume keys, navigate to the Android 6.0.1 ROM zip file that you copied to your SD card and select it using the Power button. Confirm the installation on the next screen and the installation procedure should start now.
Google Apps: Repeat the above step for the Gapps zip file as well and install it on your phone.
Step 11 – After the installation completes, go to “+++++Go Back+++++” and reboot the phone by selecting “reboot system now” from the recovery menu.
Your Galaxy Note 8.0 LTE GT-N5120 will boot now and it might take about 5 minutes to boot on your first time. So, please wait.
Your Galaxy Note 8.0 LTE GT-N5120 should now have CM13 Android 6.0.1 Marshmallow custom ROM installed on your phone! Go to Settings > About phone to verify.
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