How to Root Galaxy S II I9100 Running Android 2.3.4 Gingerbrd XXKG2 Firmware

Here's a step by step procedure on how to root your Galaxy S II I9100 that now runs Android 2.3.4 Gingerbrd firmware version I9100XXKG2 (OXA). This method of rooting is by using Chainfire's modified kernel that can root the Galaxy S II

Ftures:
- The kernel is fully stock and taken from the original firmware, with just the following added:
- Root
- Superuser 2.3.6.1
- Busybox