as i know, xzcat and then dd did the same as the arm-image-installer.
I'm on the same step: The U-boot is booting but didn't start
Something is missing.
arm mailing list
The reason, uboot can not start kernel is that sd_fusing is destroying
your boot partition. Try out your sd-card, can you read your boot
partition with a file browser? I guess you can not
By the way when you get this prompt: ODROID-XU3 #
Can you type by a USB keyboard? and see the characters by USB-Serial interface?