How can I update my Karbonn A4 Android phone?

Gaurav Yadav February 20, 2014
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My mobile, a Karbonn A4, does not update the system. I open Setting System updates, click “Checking Updates and then I get “Network connection failed, retry?”.

I’ve tried, but no updates on my mobile. WiFi will not update. How can I update my mobile phone?

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