Have no problems with uncompress it just want to use installer iso image but
can't understand where I must put iso image (write to USB? or it can be writed
to SD card, installer loads in RAM so I can use installation source as
destination source?)
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I'm see that iso images available but can't understand how to use it. All
manuals says about compressed *.raw.xz images which must be unpacked (at least
under windows) to write on SD card. I've tried to use win32dd or some other raw
copy tools to write iso image to SD card (and even tried USB