Just bought a NIOS kit and i need som help!

Hello to everyone, i have a NIOS II development kit Cyclone II Edition but the NIOS that came with it in the memory has been overwritten and i don't have it anymore.

I would like to put a NIOS + uC Linux on it, i've followed the NIOSWIKI but i need the specific design files for my board.

How can i find them? My board - apparently - is not supported by altera anymore and the website doesnt have the files anymore.