diff --git a/target/linux/mediatek/mt7986/base-files/lib/upgrade/platform.sh b/target/linux/mediatek/mt7986/base-files/lib/upgrade/platform.sh
old mode 100755
new mode 100644
index 1b4de86..2ee99c7
--- a/target/linux/mediatek/mt7986/base-files/lib/upgrade/platform.sh
+++ b/target/linux/mediatek/mt7986/base-files/lib/upgrade/platform.sh
@@ -2,8 +2,7 @@
 	local board=$(board_name)
 
 	case "$board" in
-	mediatek,mt7986-fpga,ubi |\
-	mediatek,mt7986-rfb-snand)
+	*snand*)
 		nand_do_upgrade "$1"
 		;;
 	*)
@@ -21,8 +20,7 @@
 	[ "$#" -gt 1 ] && return 1
 
 	case "$board" in
-	mediatek,mt7986-fpga,ubi |\
-	mediatek,mt7986-rfb-snand)
+	*snand*)
 		# tar magic `ustar`
 		magic="$(dd if="$1" bs=1 skip=257 count=5 2>/dev/null)"