I'm having the same problem. I am on the latest firmware I think. The changelog on the wiki stops at 0.1.2 so I can't verify that oupgrade is correct in telling me that 0.1.3 b328 is the latest. I also did a factory reset, and then ran 'opkg update'.

/etc/opkg/distfeeds.conf includes "src/gz chaos_calmer_onion http://repo.onion.io/omega/packages"

I had to manually go to repo.onion.io, which is 403 forbidden before trying repo.onion.io/omega, downloading the packages as stated above, and installing them that way.

So far these types of problems have wasted hours of my time, I bought this product expecting it to work and am starting to lose patience. Let me know if there's anything else I can provide that will help.