4.6.5 - Offline update to Debian 10 fails

When trying to update Login Enterprise 4.6.5 (or older) to version 4.8.3 you get the option to update the Debian system from Debian 9 to Debian 10. The update will fail when there is no internet connection available on the appliance. In versions before 4.7.6 the system update will try to talk to Debian repositories to download packages. This has been solved in later versions (4.7.6). You can do the following things to solve the issue;

• Decline the system update when asked.
• Update to 4.7.6 first, then update to 4.8.3
• Temporarily grant internet access to the appliance to update.