Hm, it should work in PSK/PSK2 though.
You'll have to find out the exact encryption type of your router.
The article on setting up WiFi has a command to list all WiFi Networks and the encryption methods they use ("iwlist scan" I think).
Maybe even google for more general OpenWRT help on this topic. The OpenWRT tutorial on setting up WiFi is a lot more detailed.
I don't think there's an 802.11n cpable chipset out there that doesn't support PSK encryptions.

Maybe it's not even the encryption method itself, maybe it's just a matter of setting the password correctly. Try setting up your router and carambola for PSK2 and use a simple password without special characters for testing.

Thanks NaYthan. You are the only one on earth that give a damn effort on helping people.

I've actually figure out the problem. But I'm really annoyed. more than 50 persons came see my post and you are the only that helped me. So you are the only one who deserve the answer.

Hi auxtony78

Do you mind sharing what the real issue was?
I seem to be having a similar issue

Z69

Hi auxtony78

Thank you for the reply.
My issue turned out to be - ME...

Had some ctl-c, ctl-v issue when i updated the network configuration.
Did a "Clean" boot, set-up via web i/f, working now.

Z69