ECUHELP KT200 II ECU Programmer has been confirmed to successfully and quickly read and write the JOHN DEERE 5075E 2021 L23 ECU via OBD.

Below are several images demonstrating the connection among the KT200II, the JOHN DEERE L23 ECU, and the computer, as well as the status of the ECU reading and writing process.
KT200 II Read and Write JOHN DEERE 5075E 2021 L23 ECU via OBD-01

KT200 II Read and Write JOHN DEERE 5075E 2021 L23 ECU via OBD-02

KT200 II Read and Write JOHN DEERE 5075E 2021 L23 ECU via OBD-03

KT200 II Read and Write JOHN DEERE 5075E 2021 L23 ECU via OBD-04

Conclusion:
ECUHELP KT200 II proves to be an effective ECU Programmer for programming the ECU needs of the JOHN DEERE 5075E 2021 L23 model. Its ability to read and write quickly via OBD makes it a convenient choice for professionals working with agricultural machinery.