Fuji Singapore returned me my Xpro 2 stating that they were unable to resolve the issue as it was firmware based - i have the on/off error coupled with black frame (only fella in my country it seems - bloody luck of the draw) [ At least they are confident that the issue is software and not hardware based - which seems reasonable seeing how some people have had the issue recur even with replacement sets).
Initially i had heat issues as well but that seems to be resolved by my local Fuji Technician.
Fuji Singapore also has information that a firmware update for this issue is due very, very soon - possibly by end April.