LG L7 II Dual (P716) Stuck in Emergency Mode after software update

Hi all

I tried to do a software update for the first time on my LG L7 II Dual (P716), but it has gone into emergency mode. I've tried to do a hard reset (Power + Hotkey + volume down key) but it doesn't work. All I have is a yellow screen that says emergency mode.

What do I do?

Thanks

Jamie