When attempting to write a Citroën EDC17CP42 ECU using ECUHELP KT200 bench mode, you might get the error:
“End Writing. ADDRESS 018000: Non-erasable sector in Bench mode.” (Example shown below)

Possible Cause of the Error:
This issue typically arises because ECUs have OTP (One-Time Programmable) sectors that cannot be overwritten.Used ECU: If you’re working with a used ECU, you must use the cloning driver feature in KT200.

How to Use the Cloning Driver in KT200?
Cloning Tricore ECUs with KT200 is straightforward, especially when following the correct steps for MEDC17 clones BOOT/Bench Tricore mode.

Prerequisites:
Ensure the KT200 ECU programmer is correctly connected to the ECU.
Confirm your computer has a stable internet connection.

Step 1: Read Data from Original and New ECU
Firstly, read the data (Micro [flash] and EEPROM) from both the original ECU (ECU 1) and the new ECU (ECU 2). This can be done separately either via BOOT MODE TRICORE or BENCH TRICORE.

Step 2: Launch KT200 Software
Run the KT200 software and proceed with the following steps:

Select the driver: TOOL BOOT.
Next, choose TOOLS BOOT MODE >> INFINEON TRICORE Clone Service and select the appropriate ECU clone model.
Click OK to proceed.
Step 3: Open Micro Files
Now, open the micro file of the original ECU (ECU 1) and then the micro file of the new ECU (ECU 2) in sequence.

Step 4: Clone and Save
Click on “Clone & Save” in the software. The software will generate the new ECU data and save it in the directory you choose.

Step 5: Write Data to New ECU
In the software, navigate to TOOLS BOOT MODE >> INFINEON TRICORE Boot >> and select the corresponding ECU. Choose the new file that was saved for ECU 2 and write it into the new ECU.

Key Tips and Precautions:
It is recommended to perform the read and write operations in Boot mode as using BENCH TRICORE may lead to incomplete writing of ECU data.
When writing the original ECU (ECU 1) EEPROM into the new ECU, avoid making any changes to the data directly.
Write Micro[flash] data and EEPROM data separately; do not select read all or write all options.
In case the Micro[flash] data cannot be written, it may need manual processing with winols by a professional engineer.
Please note that the KT200 ECU programmer does not support Volkswagen 5th generation anti-theft systems.

By following this tutorial, you can efficiently clone Tricore ECUs using the KT200 ECU programmer.