How-to: Force OTA update of Android software

Once your carrier has rolled out a new update, here are a few ways to quickly update your phone:

Option 1:
Settings -> Software Update -> Use the "Check Now" button to look for the update.

Option 2:
Settings -> APPs -> Select All -> Google Services Framework -> Clear Data -> Force Stop -> Turn phone off & on.
Once that is finished Settings -> Software Update -> Use the "Check Now" button to look for the update.
You might have to repeat the process a few times.

Option 3:
Settings -> APPs -> Select All tab -> Google Services Framework -> Clear Data ->Disable -> Turn phone off & on
Settings -> APPs -> Select All tab -> Google Services Framework ->Enable
Settings -> Software Update -> Use the "Check Now" button to look for the update.

source: How To Force Latest OTA System Update On Android Smartphone | iJailbreak.com

Install Tips: Before performing update:
~Make sure battery has full charge; Dont try to plug in charger
~Make sure signal strength is good; Dont try to switch wifi/ 3G/ 4G
~Back up Apps & Sync Apps; Make screens of Settings.

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