FAX-1840C FAQs & Troubleshooting FAX-1840C Not your product? Sort by: Updated Date Popularity 1 Results 1. 21/11/2006 When I run the Firmware update tool or the I-FAX install tool, it asks me about my internet connection method. There are two options: 'Connect directly' or 'Using proxy'. Which one should I choose? Driver / Software FAQs & Troubleshooting