Received my Chromebook yesterday. Loving it so far. I put my Fido SIM in it and got no results, but after doing some modifications in developer mode I managed to get it to recognize my SIM. It seems to be functional but it thinks that it's roaming so I'm going to call Fido before I use any data instead of risking $30/MB. If anybody needs the instructions to fully unlock the modem I can post them or send them to you via private message. I'll post after calling Fido and confirming whether or not it will work.