Vodafone UK S6 won't update.

My wife has a Samsung Galaxy S6 from Vodafone UK, and it keeps telling her she has an update (see attached photo), however, everytime she tries to run it, it reboots into (what I assume is) recovery, tries to install the update then it comes up with an exclamation mark in a yellow triangle with an Android with X's for eyes. It then reboots without installing the update?

The phone is 100% stock, never had any root or any modifications.

Any ideas why this update is failing?

Cheers
Stewart



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