You can try this. It is a text file of how to reset the BSI on Citroens. It`worked for my C5. This is the download link.
https://mega.co.nz
#!c1dFTBLS!ZidcMgooTECeUvznfzD5aC_2BNBSRKBD19I_8BBJPvM
John
July 2013
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