I've downloaded http://www.odroid.in/mirror/dn.odroid.c ... 07.img.zip
Then flash this image to SD card using card reader with Win32DiskImager-odroid-v1.3.zip software
When I'm trying to boot U3, nothing happens, just black screen. Power (orange led) works as normal, blue led indicator blinking somewhat 1 time per second. And still - nothing on the screen.