RePhone retro problems

So, I’m trying to install the Rephone Core 2G-Atmel32u4 board for the Retro Phone kit, but when I open the board manager in the Arduino IDE after setting the url in the prefferences, I get this:
Error downloading
I’ve tried going to that address myself, and it’s a 404. Is there any way I can get this .json file so my IDE will recognize the board or have I just wasted $10?

Hi @Isaac_Turner
Sorry for we have changed the URL, please change the URL to

Nice one dude, thanks.