How to Write ECU TCU with MPM Plug without Credits?

Question: I can read ecu with the mpm ecu tuning tool but can’t write it asked for credits.

Answer: You cannot save the file after making modifications directly. Only save after reading PCM/ECU/TCU.  It does not ask for credit in this way. 

MPM Tool How to Write ECU/TCU without Credit?

Step 1: Read ECU/TCU data and save

Step 2: Make modification

Step 3: Write the data back after making modification

Step 4: Exit VCM Editor

Step 5: Read again and save data.