--- /dev/null
+#
+# Copyright (C) 2020 OpenWrt.org
+#
+
+. /lib/functions.sh
+
+case "$(board_name)" in
+ linksys,e4200-v2|\
+ linksys,ea3500|\
+ linksys,ea4500)
+ uci set system.@system[0].compat_version="1.1"
+ uci commit system
+ ;;
+esac
+
+exit 0