ROM stands for “Read Only Memory”, it is a essentially all the files in the system partition. Installing a new ROM changes these files to give your device a new operating system. A custom ROM is a ROM that is not the Stock out of the box software. To install a custom ROM on this device a custom recovery is required, such as TWRP, find out how to get on here. Below are all the guides and Downloads to give your device a whole new look with an awesome custom ROM.