Innov-is 4000D/4000 FAQs & Troubleshooting Innov-is 4000D/4000 Not your product? Sort by Updated Date Popularity 2 Results 1. 14/05/2015 Unable to successfully finish upgrading 2. 14/05/2015 I tried to upgrade the machine with USB media. But the message "Saving the upgrade file. Do not turn main power to OFF." appeared for more than 5 minutes and I still can't upgrade it. Software FAQs & Troubleshooting