How to Upgrade Galaxy Gio S5660 to Android 2.3.6 Gingebrd S5660DXKT4 with Odin

Here's the step step by step instruction on how to manually upgrade your Galaxy Gio S5660 to Android 2.3.6 Gingerbrd using S5660DXKT4 original stock ROMs which is officially relsed by Kies server. This method is by using Odin downloader tool that needs to be installed on your PC. This is useful  just in-case you are having some issues updating via Kies. The Android 2.3.6 for Gio has