My samsung s5 G900F is not giving the update?why?

Ali Rajpoot

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Jan 1, 2016
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My samsung s5 G900FXXU1ANJ4 is not giving the update...
My current version is (Kitkat 4.4.2)..
When i update the Software in mobile...
Its given (unable to update software.A network or server error occured)..
Please give me the solution...