diff --git a/target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh b/target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh
index de09d34aef..f1dc81f7c9 100755
--- a/target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh
+++ b/target/linux/ipq40xx/base-files/lib/upgrade/linksys.sh
@@ -47,10 +47,6 @@ linksys_get_target_firmware() {
 	esac
 }
 
-linksys_get_root_magic() {
-	(get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
-}
-
 platform_do_upgrade_linksys() {
 	local magic_long="$(get_magic_long "$1")"
 
@@ -100,23 +96,7 @@ platform_do_upgrade_linksys() {
 	}
 
 	[ "$magic_long" = "27051956" ] && {
-		# This magic is for a uImage (which is a sysupgrade image)
-		# check firmwares' rootfs types
-		local oldroot="$(linksys_get_root_magic "$target_mtd")"
-		local newroot="$(linksys_get_root_magic "$1")"
-
-		if [ "$newroot" = "55424923" ] && [ "$oldroot" = "55424923" ]; then
-			# we're upgrading from a firmware with UBI to one with UBI
-			# erase everything to be safe
-			# - Is that really needed? Won't remove (or comment) the if,
-			#   because it may be needed in a future device.
-			#mtd erase $part_label
-			#get_image "$1" | mtd -n write - $part_label
-			echo "writing \"$1\" UBI image to \"$part_label\" (UBI)..."
-			get_image "$1" | mtd write - "$part_label"
-		else
-			echo "writing \"$1\" image to \"$part_label\""
-			get_image "$1" | mtd write - "$part_label"
-		fi
+		echo "writing \"$1\" image to \"$part_label\""
+		get_image "$1" | mtd write - "$part_label"
 	}
 }