Finally setting up my Circuit Sword CM3 that I ordered last summer. I've been running through the set up steps here, but I'm getting hung up on step 11, putting in the imaged SD card. I've tried setting up the SD card on my Mac and my roommate's PC, both with tester mode on and off, but nothing's working.
The best result I get is the screen turns on but stays black, and the various status LEDs light up. Here's a photo:

Any ideas what I could be doing wrong?
Thanks! Hoping to get this running, excited to finally have it set up.