Samsung Galaxy S3 unlocking / rooting / modding tutorial part 4: Flashing CF-Root / CWM with Odin
*This video only documents my personal experience - I cannot guarantee that the same process will work for your phone and take no responsibility for whatever damage that could be caused to your phone as a result of following this tutorial.
How to unlock / root / mod Samsung Galaxy S3
3. Download & Run Odin 3 v.3.07
http://hotfile.com/dl/161620048/6c6d559/Odin3_v3.07.rar.html
4. Download & Extract Clockworkmod Recovery 6 (recovery-cwmtouch-6.0.3.1-GTI9300.tar)
http://forum.xda-developers.com/attachment.php?attachmentid=1885468&d=1366021041
5. Download MIUI rom
http://bigota.d.miui.com/3.1.25/miui_i9300_3.1.25_1537f5642d_4.1.zip
In this video you use Odin to flash CF-Root onto your phone, then flash ClockworkMod Recovery onto your phone, by booting your phone into download mode first.