@dilanka is right, it’s a separate image which is not available for download. We need to get it restored via the ticket system.
Did you rewrite the sd card that came with it? I hope not. What you’re describing is rare and I would like to run some tests to see what might have happened. It’s unlikely that the card was broken, there could be other reasons that might have caused this which way easier to fix than a complete reflash. Also there’s a file there that I need to make the restore process much more smooth.
For all others, if this ever happens, please contact us before you destroy the contents of the card.