I have a Galaxy Nexus Maguro (HSPA+). I wanted to update to 4.2. I have Clockworkmod on my Nexus, so naturally it didn't work. I then proceded to wipe out everything on my phone, sdcard and system, so that i could flash the stock ROM...everything was going to plan, until I tried to connect it to my Macbook running 10.8.2. Turns out that my mac will not recognize it, even though I had USB debugging turned on beforehand. I tried using adb, and the nexus still won't show up. (It says "no device found") Short story, my nexus will not boot up past the Google screen, and won't be recognized through adb. What can I do at this point?