Скачать или смотреть How To Install Android Lollipop 5.0

WARNING - This tutorial is only for International Galaxy S3 I9300.
Blue Star or the developer are not to be held responsible for any kind of damage to your device before or after the installation. Users should proceed at their own risk.
DO NOT TRY UNLESS YOU ARE NOT SURE TO TAKE A RISK.

PRECAUTIONS
)-Take a proper backup of your data using custom recovery such as CWM or TWRP.
)-Make sure your Galaxy S3 is already rooted with CWM recovery installed.
)-The battery level of the device must be more than 80%.
)-Check the model no. of your device and ensure that you have the one which is specified here.

DOWNLOAD-
1) SuperSU
2) NamelessROM 5.0 lollipop FOR S3 I9300.
3)gapps lp-20141109
(search all the files on Google)