CyanogenMod is a free, community built distribution of Android 4.1 (Jelly Bean) which greatly extends the capabilities of your phone.
#include <std_disclaimer.h> /* * Your warranty is now void. * * I am not responsible for bricked devices, dead SD cards, * thermonuclear war, or you getting fired because the alarm app failed. Please * do some research if you have any concerns about features included in this ROM * before flashing it! YOU are choosing to make these modifications, and if * you point the finger at me for messing up your device, I will laugh at you. */