Left panel: evolution of the X-ray spectra. The observed X-ray spectra (marked by dots) are overplotted by the results of the fitting by a model consisting of an optically thin thermal bremsstrahlung function and power-law function. The average value of the time interval, the observational data, and the results of the fitting are marked by the same colour for each moment in time. Right panel: evolution of the microwave spectra. The observed data (marked by the dots) are over plotted by the result of fitting by the function corresponding to the form of the gyrosynchrotron spectrum. The average value of the time interval, the observational data and the results of the fitting are marked by the same colour for each moment in time. The vertical orange lines mark the 4 GHz and 8 GHz frequencies.