What is the default profile behavior for the 30 Series and 40 Series?

Answer

The default profile behavior is controlled by the following registry:

[HKEY_LOCAL_MACHINE\Comm\SDCCF10G1\Parms\Configs\GlobalConfig] "ignoreNullSsid"=dword:00000001

In the 30 Series, this setting is 0 by default and will try to connect any non-encrypted AP.

In the 40 Series, this setting is 1 by default and will not try to connect to any AP.