[Q] Software Update Fails

Hi

Rooted SM-T530NU, when I go to Software Update it fails.

Says....



"The operating system on your devices has been modified in an unauthorized way. Try downloading software updates using Samsung Kies on your PC or visit a customer service centre"



Any idea how I do this or do I need to return to stock for 4.4.4 and/or 5.0?

Thanks



L.

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