• Switch off the mobile
• Press the Power + volume down + home button
• Android symbol will appear, now press volume up to enter into the download mode
• Now open the Odin flash tool and follow the steps as shown in the video
• Select Samsung GT-S7562i
• Select the Odin tool and open it
• Select PDA file
• Click phone
• Click CSC
• After selection mobile will get detected automatically
• Now click start on system & installation is in process
• After installation mobile switch ON of its own.