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Today, like every day, is a good day to remind Elon of his promise
Creating the World’s Best Service and Warranty Program | Tesla 3
So a proper fix would have been a new pack, not software limitations.
As far as I know and can see in TeslaLoggers data, the loss of range 4,1V cap came with 2019.16.x, the reduced charging speed came with 2019.20.x and was tweaked multiple times (especially regarding temperature sensitivity) in later updates.