The infotainment version for your car is currently R63, but your vehicle contains around 20 other ECUs that manage various functions, from battery management to traction control or steering assistance. SC077 is not an infotainment update; it’s an update to some of these ECUs. Applying these updates improve the car’s overall behaviour. There is no direct way to tell if it has been installed, at least not from the infotainment.
Here is a picture showing the ECUs updated, which require “SIPS”, a dedicated software from SAIC, as well as a proprietary OBD dongle.
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