To be absolutely just, it was not about reading manuals here - xz is absent from nokiabox, one need busybox-power (aka real busybox) for it to work.

Sure, OP could find it himself after not-so-much hassle, but who haven't had such "oh sh|t" moments himself?

Still, tanago's comment was out of line, *especially* having in mind, how often he asks "rolleyes" type of questions, himself.

Anyway, no good reason to argue about, right? Original question got resolved, we learned something new about case sensitivity in tar (at least me and peterleinchen), everyone is happy.

/Estel