Default How to Get a custom Recovey on i9100

I used to have an i9100 before and heavily tweaked it. I have a Nexus now and it is so much easier than S2 and I forgot everything. Now, my brother is got an i9100 and I would like to know how to get a custom recovery on it. I don't need root, just a custom recovery like TWRP or CWM will do.

Can someone link me how to install CWM or TWRP on this i9100? I want to install a KitKat ROM on it, such as Carbon ROM. I searched and searched but the instructions are for 4.0.4 only. Thanks
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