Sony Xperia Z1 was released in September 2013. Xperia Z1 is powered by a Qualcomm Snapdragon 800 2.2GHz quad-core processor, and 2GB of RAM. The 5″ TFT display has a resolution of 1920 x 1080 and is manufactured utlising Sony’s Bravia technology. Internal storage comes in at 16GB, with a further 64GB available with microSD. Z1 has a 20.7MP sensor, Sony’s in-house G lens and image processing algorithms, called BIONZ.
Android M Developer Preview was released a few days ago but it was only for a few Nexus devices. Sony released binaries allowing developers to create Android M developer preview test images for a list of compatible Xperia devices in June. Xperia CyanogenMod Team have built on this and created a custom ROM based on Android M Developer Preview. If you want to install it on Xperia Z1, follow the guide below.