Or just copy them from the keyboard to a USB stick.
Note that the COPY function does not work inside the Expansion folder. So you could only load each single Expansion Style and then SAVE it to another location in User drive or on a USB stick.
On Genos and Tyros5, it is much faster to use the USB Storage Mode and copy the desired Expansion content (e.g. Styles or Multi Pads) using the computer (as already mentioned by ckobu).
By the way: Styles in
unprotected Packs (.ppf/.ppi) can be extracted with the PC (Windows) program "Style Extractor".
To be complete: There are also Vali's "YEM Content Explorer" that can extract Styles from .ppf Packs that are already imported into the YEM (but no need to install it on the instrument). And there is Jørgen's program "Style in YEP/PPI Files" that also can extract Styles, however, to my knowledge, only from .ppi (and old .yep) files, but not from .ppf files.
Best regards,
Chris