diff --git a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
index 427c39c06..bdf49b7d7 100755
--- a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
@@ -106,7 +106,8 @@ platform_do_upgrade() {
 	xiaomi,mi-router-4|\
 	xiaomi,mi-router-ac2100|\
 	xiaomi,mi-router-cr660x|\
-	xiaomi,redmi-router-ac2100)
+	xiaomi,redmi-router-ac2100|\
+ 	zte,e8820s)
 		nand_do_upgrade "$1"
 		;;
 	hatlab,gateboard-one)