Hi LucianB, I was literally just about to load the new firmware and have a go but decided to check the forums a bit first. Can you describe a bit more in detail how to reproduce the problem(s) you are experiencing after the firmware update? Can you upload a video showing before and after firmware update behavior? I am optimistic Arturia will solve these issues, but lets detail the exact issue so they can narrow it down and solve it.
<UPDATE> I have updated my MxB to 2.0.2 Happy to report the Midi start message is no longer required to use the ARP or Sequencer in Time with Midi Clock input !!! THis is GREAT NEWS! I also use Logic Pro and have slaved the MxB to Logic, it is following along just fine, in time and respects incoming midi Notes and CC etc..so now I am really curious to get a more clear understanding of how it is behaving for you. Please post either a setp by step to reproduce or a video explaining the issue by example and steps to reproduce. I hope your issue is just a simple setting maybe.