I have followed the guide
http://archlinuxarm.org/forum/viewtopic.php?f=18&t=3312&p=19207 using an 8gb USB drive, the same that I had arch installed in.
That guide says: "cd /media/rootfs"
This was not possible so I had to do: cd/media/sdb1/rootfs, after creating a folder in the flash drive called "rootfs"
I had first formatted as instructed.
Anyway, the rest went smoothly. But it does not matter what port on the pogo in plug the USB into, the result is the same:
an amber light in the front. I still can't ssh into it. While it's booting, I do get green light that stays for a long time, and then it later changes to amber. It picks up an IP. I can ssh but can't log in because the password, "root" is rejected, which means it's not loading the USB drive.
I welcome and thank anyone who can help me deal with this on gong problem which has lasts now for weeks.
Thanks a lot!