> Phones are type-certified by regulatory agencies based on their 
> behaviours.  There are certain things they should do on the radio waves 
> and certain things they must not do.  If this behaviour is implemented 
> in software, then the software is part of what is type=certified,a nd it 
> has to be there.

Actually for that very reason, the phone part of those devices is
actually quite separate from the rest.  It has its own processor, with
its own firmware and communicates via some bus like USB or some such.

> I have no idea how these interact on the iphone.  Or Openmoko.  Or 

On the FreeRunner, the phone part is closed :-( indeed for the
aforementioned reasons.  Even Openmoko itself did not have access to the
whole firmware of those devices.  But they did get far enough to be
allowed to distribute a piece of code that can update the firmware of
the phone submodule (which is an important functionality if this
firmware has bugs).


        Stefan


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