Index: fstools-2016-12-04-84b530a7/libfstools/mtd.c
===================================================================
--- fstools-2016-12-04-84b530a7.orig/libfstools/mtd.c	2017-08-29 15:00:46.824333000 +0800
+++ fstools-2016-12-04-84b530a7/libfstools/mtd.c	2017-08-29 15:02:52.848520000 +0800
@@ -218,6 +218,9 @@
 	if (v->type == UBIVOLUME && deadc0de == 0xffffffff) {
 		return FS_JFFS2;
 	}
+	if (v->type == NANDFLASH && deadc0de == 0xffffffff) {
+		return FS_JFFS2;
+	}
 
 	return FS_NONE;
 }