After rolling out the Android 4.1.2 Jelly Bean update for the Nexus 7, Google has started rolling out the 4.1.2 OTA updates for the Nexus S, Galaxy Nexus and the Motorola XOOM.
The Android 4.1.2 update for the Galaxy Nexus and the Nexus S will bring with it some bug-fixes and performance improvements, along with the ability to expand notifications via a single finger gesture.
Galaxy Nexus and Nexus S owners can download the OTA update zip file from here and here, respectively. Owners of Nexus S (I9020 and 9023 variants) can manually install the update by downloading the OTA update, renaming it to ”update.zip” and then transferring it to their handset. Then, reboot your handset into recovery mode by pressing the Volume Up and Power key and finally select the ‘install update.zip’ option.
The steps to manually install the OTA update on the Galaxy Nexus are a bit complicated, but if you are still interested, then head over to this thread on XDA for the steps.
Owners of the Wi-Fi variant of the Motorola XOOM will be automatically notified when the update is available for their tablet. The 4G LTE variant of the XOOM and the Galaxy Nexus will get the update only after Verizon is done with its internal quality testing, which can take quite a while.