How to Update/Upgrade Galaxy Fit S5670 to Android 2.3.4 Gingerbrd S5670XWKQ2 Firmware via ODIN

Here's a step by step guide on how to manually upgrade Galaxy Fit to Android 2.3.4 Gingerbrd with current firmware update build S5670XWKQ2. This version was previously reported as official relse from KIES server over Europe Regions. And has been ripped as a stock ROM, so others can manually flash it using ODIN tool in-case having difficulties on updating it via KIES. This