In the process of the firmware update you will be losing all the data which is there in the phone which includes SMS, Contacts, images, videos, songs and other files which is there in the phone memory. You can move all the data to your phone’s internal / external SD card so that the data is safeguarded from getting deleted or corrupted. You can also refer the below tips or methods on how you can create a backup and then restore of all your data.SMS – Use sms backup and restore app from market,Contacts...
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