can't extracted JFFS2?

Started by c326277320, October 25, 2012, 06:59:08 AM

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when i run "./ B070.jffs2 B070"

but the result is error:

Extracting 0 bytes of  header image at offset 0
ERROR: No supported file system found! Aborting...

and the documents tips it can be extracted ...

Need your help !!!