Read more about the Firmware and access the Downloads for the
EF-M55-200mm f/4.5-6.3 IS STM Lens, EF-M 15-45mm f/3.5-6.3 IS STM Lens and the EF-M18-150mm f/3.5-6.3 IS STM Lens
from the Canon USA Website.
In the case of the 15-45 it seems to apply only to the EOS-M50.
Am I reading this correctly ?