Sony Xperia Z Ultra is a phablet with amazing specs. It has a huge 6.4″ full HD display, quad core 2.2GHz Qualcomm processor, Adreno 330 GPU, 2GB RAM and LTE connectivity. It is IP58 certified, meaning it is dust and water proof, and water resistant to 1 meter or 30 minutes. It features an 8MP camera, 16GB of internal storage and it runs on a large 3050mAh battery.
The CM 12 ROMs are available for whole range of devices. Sony Xperia Z Ultra has received the CM 12 ROM running on Android 5.0.2. You can install it on the Z Ultra. Follow the guide given below.