[Question] How to extract protected media.pk2

[multiuses]

How to extract protected media.pk2 ?'
when i use the EliteSROPk2Tools
the extractor shows a warning " Error : Invalid Blowfish key "
how to get the blowfish key
and if i suppose i have the key
how to use it and extract the media.pk2 file ?
please share

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i found out how to get the blowfish key
but how to extract files??
i use Joymax Pk2 tool
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Edit : thanks i got it

[noenergy]

use the jomax pl2 extraktor and use the pw 169841