Ian, where exactly in that Av Week did you see reference to a s/w 'glitch', as I again quote your post:
This poorly handled icing software glitch could have occurred in the ITCZ over mid-Atlantic then the story may have had a different outcome.
A software "glitch" is when the software does not function as intended. The GEnx software in this event worked
exactly as intended.
Since you obviously didn't read my response, I'll repeat it:
The problem is Ice Crystal Icing (ICI) - which is fundamentally a hardware problem. ICI can cause ice to form internal to the engine core, in areas where it's normally too hot for ice to form. When this ice sheds, it can damage blades and/or quench the burner. GE is trying to
address the ICI problem using software changes, because if they have to change the hardware it'll be hugely expensive and take a long time. They may or may not be successful with this approach.