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The Monte Carlo event generator EKHARA was upgraded during last years.  The upgrades presented here contain: a) the inclusion of new final states$e^+e^-\to e^+e^-\eta $, $e^+e^-\to e^+e^-\eta'$, $e^+e^-\to e^+e^- \chi_{c_i}$ and $e^+e^-\to e^+e^- \chi_{c_i} (\to J/\psi (\to \mu^+\mu^-)\gamma)$; b) new$\gamma^*-\gamma^*-P$ transition form factors and c) the radiative correctionsto the reactions $e^+e^-\to e^+e^-P $. For the upgrades a) and b), we presenthere only the pieces missing in other publications, mostly algorithms used inthe phase space generation. The radiative corrections are presented here forthe first time. A new algorithm of the phase space generation for the reaction$e^+e^-\to e^+e^-P \gamma$ being its main part. A comparison with GGRESRCgenerator is presented. Big differences between the radiative correctionscalculated by the EKHARA and the GGRESRC generators are observed.

EKHARA 3.0: an update of the EKHARA Monte Carlo event generator