Transfert sof file ?

Hello !

I just bought the Microtronix Cyclone development kit and I have a problem :

In Quartus II, Tools->Programmer, when I want to load a file .sof, it doesn't work ; I have an error : "Can't communicate with device. Device will stop functioning when it reaches its non-tethered mode timeout limit."

I'm sure the connexion is correct, because I tested the same manipulation with an altera Stratix card... and it works !

Can anyone have an idea ?

Futhermore, I have an other question :Is there already a uclinux pre-loaded in the card ? If yes, how can I rebuild the kernel ?

Thanks.

John.