I highly doubt that the dealers will have the "1.0" software to re-flash, and am even more doubtful that smart would provide the software if the dealer requested it. The 2.0 upgrade is just that, an upgrade. The improved software has been in service on all 2009 models, and now many 2008's as well. If there were a problem with it, smart would surely address it with another improved software version rather than resorting to rolling back to "1.0".
As dink stated, it's very unlikely that 2.0 is the culprit in the situation you're referring to, and I'm certain it will all get resolved.