MSFS 2020 - A400M Inibuild: The thrustmaster calibrating procedure is the same as for MSFS2024 and you can easily find videos on Youtube.
The throttledata.ini is located at:
C:\Users\yourname\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalState\packages\inibuilds-aircraft-a300-600\work
Same procedure as for MSFS2024; set to "true"and the reverse should work.