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 9d5e7576ecd8d..8055396b855ca 100755
--- a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
@@ -114,6 +114,7 @@ platform_do_upgrade() {
 	zyxel,nr7101)
 		fw_setenv CheckBypass 0
 		fw_setenv Image1Stable 0
+		[ "$(fw_printenv -n BootingFlag)" = "0" ] || fw_setenv BootingFlag 0
 		CI_KERNPART="Kernel"
 		nand_do_upgrade "$1"
 		;;