Posted by Gnomad on Jun 23, 2019; 3:04am
URL: https://itus.accessinnov.com/FIRMWARE-Itus-Networks-Shield-Firmware-Upgrade-WIP-tp1726p1770.html

Hi Grommish,
see commit history under https://github.com/ItusShield/Shield-Master/commits/master/usr/lib/lua/luci for LUA page changes from the original Shield, which includes a tab for users to specify which block lists they want applied.  I can't remember the specifics of how that was saved, but if you clone the repo and diff against 2016-03-30 you should find the relevant files.  Then the fw_upgrade.sh file referenced earlier picks up those settings to apply them.

Similarly under this folder is a tab that allows users to backup or restore their configs via downloadable zip - might be able to replicate this mechanism with your repo.