Earlier today, Ubuntu Touch Preview became available to be installed on a variety of Nexus devices including the Nexus 10, Nexus 7, Nexus 4 and Galaxy Nexus (GSM only). When the files first became available, it appeared that they could only be flashed using an Ubuntu PC. Now, anyone who has unlocked the bootloader on their Nexus and running a custom recovery can go ahead and flash. Remember this is a developer preview, so you'll most likely find bugs that may make your device unusable (and you'll have to flash back to stock or your current custom ROM). Now let's get to the instructions.
1. Download the correct file below
2. Download the Phablet armhf.zip and place both files on your internal storage
3. Reboot into your custom recovery
4. Create a nandroid backup
5. Wipe Data/cache
6. Install the device.zip
7. Install the phablet ARMHF.zip
8. Reboot and enjoy some Ubuntu on your Nexus!
Phablet armhf zip: Download
It's just that easy to flash it onto your Nexus. If you have any trouble, please be sure to leave a comment below and we'll try and assist you. If you've flashed ROMs before, it's basically the same method. Let us know in the comments below how you like or dislike Ubuntu Touch!