Samsung Galaxy Grand Duos official 4.2.2 JellyBean Update (offline)

Now samsung releases the 4.2.2  JellyBean for Samsung Galaxy Grand Duos with the advance features...Now i m going to give you how to upgrade your samsung galaxy Grand Duos into 4.2.2 JellyBean..

Requirements :

• Odin downloader for samsung galaxy grand duos : Click Here
• Firmware (OS) for Samsung Galaxy Grand Duos  : Click Here 
• Samsung Galaxy Grand Duos Mobile
• Data Cable which is suitable to connect mobile with pc
• Computer

Procedure :

• First extract the downloaded firmware it contains tar.md5 , Modem , CSC , PIT files...
• swith off your mobile then start with ( Swithon + Home + Volume down buttons) by pressing these three buttons simuntaneously it will go to Download Mode..
• Then open the odin downloader (samsung mobile driver must be installed) In the odin downloader window ID:COM will show port number with yellow color if it doesn't show connect mobile with another USB Port..
• Above all are done successfully then Check Phone , CSC , PIT select the PIT , CSC , Phone (Modem ) file from extracted folder..
• finally click Start button
• It will send all OS files to your mobile .. When the update is completed odin will show "successfully completed .. rebooting ".. 
• Disconnect your mobile from computer
• Wait for 15 minutes (All the mobiles take 15 minutes for first boot)
• Enjoy Latest 4.2.2 JellyBean on your mobile...

Any doubts comment below the post ....Thank you for listening :)