HTC One X was launched in the first half of 2012 as HTC’s flagship. It has a 4.7″ Super LCD2 720p screen, quad-core Nvidia Tegra 3 CPU processor, 1 GB of RAM and 32 GB internal memory. It is equipped with an 8 MP primary camera. Initially, it ran on Android 4.0.3 ICS.
HTC One X is an older device so HTC wont provide official KitKat support. However you can still update this phone to Android 4.4.2 via the CM 11 custom ROM. The CM 11 ROM is still being developed but it can be used for day to day purposes. Follow the instructions given below to install CM 11 on HTC One X.