Yes I did. As I said, there is probably a simple explanation and I genuinely appreciate your attempts to assist, but I think there is something else wrong here. I have a number of units, including a GCX and a Boss Sy-300 linked to the Axe Fxiii and everything worked fine before this update. Now nothing associated with the MIDI block works. I will figure it out LOL.
I think there's definitely an issue, but the difference here is that the workaround isn't working for you. I'm pretty sure the issue will be rectified in an upcoming update.