Just as I posted the previous article, Profoto dropped this in my mail box. It speaks for itself. No further comment necessary:
NO, THE PROFOTO B1 CANNOT PERFORM TTL METERING WITH CANON EOS-1D X. NOT QUITE YET.
As some of you might have noted, the firmware upgrade we released on Mar 31 contains a bug that causes the B1 to get stuck at full power. The bug only appears when shooting in TTL mode with Canon EOS-1D X, but considering today’s announcement, that is more than enough to remove it from our site.
The short, non-technical explanation for the bug is: we were too eager and didn’t test the upgrade properly. For that we are sorry.
Rest assure that we’re now working hard to fix this problem. Vacations have been cancelled, the coffee is brewing, and we will get back to you as soon as we can with an update.
For the meantime, it is not possible to download the firmware upgrade from the Profoto site.
Those of you who do not shoot with Canon EOS-1D X will not notice this bug, regardless if you’ve performed the upgrade or not. Everything will work just fine.