We present the first spatially resolved, X-ray spectroscopic study of 4-8 keV diffuse emission found in central part nearby starburst galaxy M82 on a few arcsecond scales. The new details that we see allow number important conclusions to be drawn nature hot gas and its origin as well feedback ISM. use archival data from Chandra with an exposure time 570 ks. Fexxv at 6.7 keV, expected metal-enri...