Sjgadsby, thank you for your help, I'll check that out.

The device has been obtained from nokia for software testing purposes quite a while ago. It is a pre-production model which means that device is (afaik) made in actual production line, and therefore there's no obvious differences to 1301.

Cdmackay, hardware version is visible on boot if device is in research and developement -mode. That can be enabled with:
./flasher-3.0 --enable-rd-mode