It looks like the Tizen image flashing instructions are out! I wouldn’t have found out about it had not my good pal jezra posted a link in the forum (I’ve been waiting for it to be announced in the mailing list which was promised 2 weeks ago).
Anyway, below is a summary of the steps, and oh, you need to be running Ubuntu (32-bit):
The full, detailed instructions are at the Tizen.org Wiki.Thanks jezra!
There has been some questions on instructions for flashing new images to devices for Tizen. We are working on getting that documentation out to all of you. I hope to have this complete by either Friday or Monday.
Links: Tizen General Mailing List