Index: lede/target/linux/mediatek/image/Makefile
===================================================================
--- lede.orig/target/linux/mediatek/image/Makefile	2023-03-14 10:22:26.601486141 +0800
+++ lede/target/linux/mediatek/image/Makefile	2023-03-14 10:25:01.346275356 +0800
@@ -18,13 +18,13 @@
 
 # build squashfs-hashed
 define Build/squashfs-hashed
-	$(CP) $(ROOTFS/$(FILESYSTEMS)/$(DEVICE_NAME)) $(ROOTFS/$(FILESYSTEMS)/$(DEVICE_NAME))-hashed
+	$(CP) $(ROOTFS/$(FILESYSTEMS)/$(DEVICE_NAME)) $(ROOTFS/$(FILESYSTEMS)/$(DEVICE_NAME))-hashed-$(firstword $(DEVICE_DTS))
 	$(TOPDIR)/scripts/make-squashfs-hashed.sh \
-		$(ROOTFS/$(FILESYSTEMS)/$(DEVICE_NAME))-hashed \
+		$(ROOTFS/$(FILESYSTEMS)/$(DEVICE_NAME))-hashed-$(firstword $(DEVICE_DTS)) \
 		$(STAGING_DIR_HOST) \
 		$(TOPDIR) \
-		$(ROOTFS/$(FILESYSTEMS)/$(DEVICE_NAME))-hashed-summary
-	fdt-patch-dm-verify $(ROOTFS/$(FILESYSTEMS)/$(DEVICE_NAME))-hashed-summary \
+		$(ROOTFS/$(FILESYSTEMS)/$(DEVICE_NAME))-hashed-summary-$(firstword $(DEVICE_DTS))
+	fdt-patch-dm-verify $(ROOTFS/$(FILESYSTEMS)/$(DEVICE_NAME))-hashed-summary-$(firstword $(DEVICE_DTS)) \
 		$(KDIR)/image-$(firstword $(DEVICE_DTS)).dtb $(KDIR)/image-sb-$(firstword $(DEVICE_DTS)).dtb \
 		$(HASHED_BOOT_DEVICE)
 endef