  We present a detailed analysis of the spectral properties of the Seyfert 1
galaxy 1H0419-577, based on the archival XMM-Newton, NuSTAR and simultaneous
Swift observations taken between 2002-2015. All the observations show a broad
emission line feature at the iron band. We demonstrate that the broad band
spectral variability at different levels can be explained by the combination of
light-bending effects in the vicinity of the central black hole plus a thin
warm absorber. We obtain a black hole spin of a > 0.98 by fitting the
multi-epoch spectra with the relativistic disc reflection model. 1H0419-577 is
accreting at 40% of its Eddington limit and its X-ray band shows the hardest
powerlaw continuum in the highest flux state, which was previously more
commonly seen in AGNs with a low accretion rate (e.g. $L_{\rm X} /L_{\rm Edd} <
10^{-2}$). The NuSTAR observation shows a cool coronal temperature of
$kT=30^{+22}_{-7}$keV in the high flux state.
