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New firmware upgrade is available. I tried to install it through Kies at least 15 times. But every time, it fails. I am using latest version of Kies on my PC.

I Googled for alternative. I found ODIN for the same. But I am doubtful whether it is reliable.

Please tell me if someone knows reliable way to upgrade firmware without using Kies.

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Did you try rebooting your device or connecting it while in Download Mode? – Matthew Read Dec 1 '11 at 18:45
up vote 6 down vote accepted

There is no alternative for Kies.

Kies is the only offical way to update Samsung's Android devices.

To unofficially flash/update Samsung devices Odin (for Windows) and Heimdall (for Linux) are the de facto standard. These two a very reliable.

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I tried ODIN. and now i am having updated firmware on 1st attempt. But lost my all contacts, data, sms due to my one foolish step. – Amit Gupta Dec 2 '11 at 5:06

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