I had to wipe & fresh install this ubuntu. Perhaps somebody has a better explanation of whats going on for such a simple thing. Its ubuntu 21.10, and repo has gnuradio-3.8.2 and uhd-3.15, thats ok the version i need (although if somebody wants 3.9 maybe a problem with Release file)
/usr/bin/uhd_image_loader put the images into /usr/share/uhd/images uhd_config_info --print-all shows Images directory as nothing (no path) after i set environment variable export UHD_IMAGES_DIR=/usr/share/uhd/images then uhd_usrp_probe downloads firmware and shows my B100 correctly, all OK after setting this environment var.
