Used ECUHELP KT200 to write/read Mercedes CDR2 via OBD. When reading, receive an error and display a message to contact support. What is the solution?

Solution:
In Jtag mode when using KT200 ECUHELP to write/read Mercedes CDR2.
Kit to use:
Rainbow flat cable
Multifunction cable
Please follow the instructions to connect the multifunction cable:

Solder 3 links on the PCB:

Solder the rainbow flat cable on the PCB:

To write and read, use the following driver:

Done!
Please follow the above guide to use ECUHELP KT200 for reading/writing CRD2.10 in JTAG mode.