I do believe that there's a problem within the Nokia Software Updater or the Nokia Ovi Suite and I hope that the software engineers at Nokia will do something to correct it. I have posted three screen shots below to show you guys the problem. I would not be able to understand if both updating softwares failed to perform the update considering the fact that the Nokia 6600i slide was a mobile device launched by Nokia back in July 2009! The product has been launched for more than six months now so both Nokia PC Suite and Ovi Suite should have supported it by now!
Nokia Software Updater failed to detect the mobile device
At least the latest Nokia Ovi Suite managed to detect an update...
But the device is not supported by the Ovi Suite!