I just flashed my phone's GSM and have some suggestions regarding the procedure.
I did this:
phone# mkfifo /tmp/image phone# cat /tmp/image > /dev/mmcblk0
host$ scp flash-moko11-2.image email@example.com:/tmp/image
and it worked very well. This required no uSD slot on my computer, no mounting of remote filesystems, and has no risk of blasting my host HD.
If someone seconds this method, I will update the documentation.
Also, I have the feeling this might work too: host$ dd if=flash-moko11-2.image | ssh firstname.lastname@example.org "dd of=/dev/mmcblk0"