Update downloaded, but can't open update.

[WinCoffee]

My lumia 520 downloaded update (I think it was W10) but after downloading I got error message " can't open update" this is not first time.

 

[hotphil]

Reset and try again

 

[WinCoffee]

Hard reset? :/

 

[WinCoffee]

I have tried many times. I got 801882d2 error code... And it says "update was downloaded, but cannot be opened"