While many users are still waiting for an official update to Android 4.0 Ice Cream Sandwich, Google has gone ahead and launched Android 4.1 Jelly Bean, and everyone wants to have their device running this new version of operating system. With the slow roll out rate, the penetration rate of Android 4.0 Ice Cream Sandwich is just above 10%, and it is not sure as to when these devices will be getting an upgrade to Android 4.1 Jelly Bean.
The first devices that will be getting Jelly Bean update are those devices which are running the vanilla Android build. Vanilla Android build basically means the ROM which is installed on the phone by the manufacturers is the stock ROM which Google supplies officially. Normally, manufacturers like HTC for example take the stock vanilla ROM and “skin” it with HTC Sense UI before installing on to their device. Such ROMs cannot be updated by Google directly and the update has to be released by the manufacturers after making appropriate changes to the vanilla ROM according to their requirements, however, some devices do come with vanilla version of Android pre installed as its operating system, meaning Google can update those devices directly without any intervention from the manufacturer or carrier of the particular device.
Galaxy Nexus S is one such device. Vodafone Australia announced that they would be rolling out the Android 4.1 update and the company has said that the update has been approved and that the Android 4.1 roll out by Google is scheduled for 1:00pm AEST, 19th July 2012. SFR France is also indicating that they will be updating Nexus S very soon.
If the update is rolled out at scheduled time, the Nexus S, the aging Nexus device, will be getting Jelly Bean before Samsung Galaxy Nexus. Galaxy Nexus is also amongst first few devices announced to be getting Android 4.1 Jelly Bean update, however Motorola Xoom and Galaxy Nexus S seem to be getting the latest version of Android in a speedy manner.
While the American roll out of Jelly Bean for Nexus S is also around the corner, we should be expecting something solid very soon, however, since American carriers take their own sweet time to roll out an update, you can check out the AOSP ROM in the meantime if you are dying out of curiousness.
XDA Senior Member legolas93 has released a Jelly Bean 4.1.1 AOSP ROM for Nexus S. There is no detailed info about the functionality of this ROM available except the claim that everything is working, which is like honey to ears. The current changelog for release 2 says that the Camera app and Tethering have both been fixed. The ROM is already rooted, so if you are comfortable with the process of flashing ROMs, head over to xda-developers over here.