Finally!!!
Test vectors passed And I can confirm now that test job returns six nonces. 744ec1ec is the 6th one.
This chip is a nightmare for software writer. Behavior of the chip depends on the command. Some commands break chain, some don't return any value back to host uC. And datasheet is the worst I ever seen. Errors (register table for example) and lack of information. Without oscilloscope I would never guess how to "talk" with this chips. Many hours spended on discovering things that should be in datasheet.

http://imgur.com/MVtOniD