The LG Nexus 4 Smartphone with model No. E960 can now be upgraded to the newest Android 6.0.1 Marshmallow Nitrogen OS ROM. This is a free stable ROM that aims at augmenting the features & functionalities of your Smartphone. The Custom ROM is based on Chroma, AOSP, CyanogenMod, DU, BenzoRom, Euphoria OS, Krexus, PAC, & PureNexus builds. The Custom ROM