Samsung Galaxy S I9000 was Samsung’s first entry into its Galaxy S series of Android smartphones. The Galaxy S features a 480×800 Super AMOLED touchscreen display, a 5 MP rear camera, a 0.3 MP VGA front-facing camera, and a 1 GHz processor. It came with Android 2.1 Eclair and was upgradable to Android 2.3 Gingerbread.
A few days back, we saw a guide on how to install Omni ROM running on Android 5.1 on the Samsung Galaxy S2. The same ROM is available for the Galaxy S also. It will update the Galaxy S to Android 5.1. This ROM offers the best Lollipop features taken from top Android custom ROMs such as CyanogenMod, SlimROMs and ParanoidAndroid ROM. Follow this guide to install it on the Galaxy S.