Your phone must be rooted.
Your device must be running one of these stock ROMs:
DXLF1
DXLL1
DXMJ1
Installation Steps
Download the ROM and kernel files to your phone.
Power off your phone and boot into Recovery Mode.
Flash the cwm.zip file through the stock recovery.
Select Unmount /system.
Flash recovery-6.0.5.3.zip through CWM to upgrade to ClockworkMod Recovery 6.0.5.3.
Select Reboot Recovery.
Wait a few seconds until the device boots back into Recovery Mode.
Perform the following wipes:
Wipe Data / Factory Reset
Wipe Cache Partition
Wipe Dalvik Cache
Format the following partitions:
/system
/data
/cache
Unmount:
/system
/data
/cache
Flash the ROM (Install ZIP from SD Card).
Select Reboot System Now.