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-rw-r--r--defaultenv/bin/_update_help8
1 files changed, 5 insertions, 3 deletions
diff --git a/defaultenv/bin/_update_help b/defaultenv/bin/_update_help
index e6ea64cf80..a23f00fe0a 100644
--- a/defaultenv/bin/_update_help
+++ b/defaultenv/bin/_update_help
@@ -1,8 +1,10 @@
#!/bin/sh
-echo "usage: $0 -t <kernel|rootfs> -d <nor|nand> [-f imagename]"
+echo "usage: $0 -t <kernel|rootfs> -d <nor|nand> [-f imagename] -c"
echo "update tools."
-echo""
+echo ""
+echo "options"
+echo " -c to check the crc32 for the image and flashed one"
+echo ""
echo "type update -t kernel -d <nor|nand> [-f imagename] to update kernel into flash"
echo "type update -t rootfs -d <nor|nand> [-f imagename] to update rootfs into flash"
-