If you have not upgraded or updated your old Android Firmware to the latest Android 4.1.1 Jelly Bean OS on your Google Nexus S device so do it now and get many new and updated features with Android 4.1.1 Jelly Bean like smooth user interface, more powerful notifications, optimized keyboard with next word prediction and offline typing, improved battery performance and most amazing feature of Google Now voice searching feature. and now Android 4.1.1 Jelly Bean is also available for Google Nexus S Smartphone. Google had released Android 4.1 Jelly Bean at Google I/O Conference 2012 and have also integrated its new Android Mobile Operating System on many upcoming Android Smartphones and Tablets devices including Google Nexus 7, Galaxy Nexus, Motorola Xoom etc. How To: Download, Install, Flash and Root Android 4.1.1 Jelly Bean On Google Nexus S Model’s (i9023/i9020/i9020T/i9020A) Devices - Full Tutorial and Guide