can't update.

[ashleylawless]

I go to update and it downloads then says can't download.

[Alexander1]

Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.

Could you please elaborate a bit? 

Are you trying to update directly in the phone via Update Center app or are you using a computer? 

[ashleylawless]

Yes I am using the mobile device to update. It fully downloads. But after its finished just before it should install it says "could not download“

[Alexander1]

OK. Thanks. 

I recommend that you are connected to a Wi-Fi network when you do this update. If you already are, I suggest that you try on another network. 

You can also use a computer to update the phone: 

http://www.sonymobile.com/update

[ashleylawless]

Tried doing both. And still nothing.

[ashleylawless]

Companion says it's not original or something.

[_alexdon_]

So your bootloader is unlocked?Then it will notify you about not original software.

[ashleylawless]

The bootloader is I think.

[_alexdon_]

You cannot install official updates if the bootloader is unlocked.

[ashleylawless]

So,if I relock it. It will update.