have tried to recover deleted directory tree from usb stick,
recuva reported, that files are unrecoverable due to they are overwritten,
by ........ the files from the same deleted directory tree,
this is fat32 filesystem,
so the files have gone,
so time for experiment,
in next step I writed a directory tree to the stick,
copied the whole tree to HDD just to be sure the files were correctly written,
deleted the directory tree,
and tried to recover,
the same - files are unrecoverable