Currently it is not simple to change it but it is possible.
Close the IDE. Find the file named: project.pbxproj.template in B4i installation folder.
Edit the file and change line 240, from:
TARGETED_DEVICE_FAMILY = "1,2";
To:
TARGETED_DEVICE_FAMILY = "2";
Note that there is a similar line a few lines above so make sure to change the correct one.
Currently it is not simple to change it but it is possible.
Close the IDE. Find the file named: project.pbxproj.template in B4i installation folder.
Edit the file and change line 240, from:
TARGETED_DEVICE_FAMILY = "1,2";
To:
TARGETED_DEVICE_FAMILY = "2";