Hi, I am a newby to UM and not a computer expert. I finished UM build and installed Cura (v12-12a). Tried to upgrade firmware to Marlin but PC (a HAF 912 running windows 8) could not find the UM. I tried rebooting PC and reconnecting the USB cable. No luck. I don't know how to try upgrading firmware now since the wizard doesn't give me a window. I went to github Marlin website and I am confused. Should I click the Clone In Windows button to try to get the upgrade? I do not know how to tell if I am missing the USB drivers for the UM. I am not sure also how to get at the error logs with this damn Win 8. :( Cura will load a file like the handle or robot just fine so software install seems OK. Thank you anyone for suggestions. Happy New Year.