Samsung Galaxy Grand gets updated to Android 4.2.2 Jelly Bean
Samsung Galaxy Grand gets its first update pushing it to Android 4.2.2 Jelly Bean, at present only Russia has got the update but Samsung is expected to seed is globally soon.
If you are in a hurry, the Android 4.2.2 Jelly Bean firmware update for your Galaxy Grand is available at the source link. As usual, flashing a firmware always involves risk, and it may void your warranty as well since its not officially available everywhere yet. Please follow the instructions carefully.