Rooting an Android device is the most important thing users look for after installing an Official Firmware, or after purchasing a brand new device, however, most of the people don’t know that for the Firmware you can use any recent version of Super SU.zip and as far as the Custom Recovery is concerned, it is for the device, not the Android version, so it doesn’t matter which Android version you are using you can use the same recovery you used for the Older version and it will work without any problem.
androidswiki.com/