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This wasn’t an image of any particular real black hole. It was a computer rendering a model of a black hole, by ray tracing photons through all of the interesting trajectories and orbits they can take.
The first real image of the black hole at the center of M87 was published in 2019. This was achieved by processing interferometry data from several telescopes.
OP’s title would have been better as “first accurate depiction of a black hole.”