Confirmed: ECUHELP KT200 can read and write Marelli 4AVP successfully.
![](https://www.kt200.org/wp-content/uploads/2022/12/kt200-marelli-4avp-01-576x1024.jpg)
Kit to use: Multifunction cable.
Connect multifunction cable as follows.
![](https://www.kt200.org/wp-content/uploads/2022/12/kt200-marelli-4avp-02.jpg)
To read and write use the following driver:
->Tools BOOT MODE
->ST ST10Fxx
->ST10F269
Look at the following cable, the red power cable is not connected, then it won’t read a mareli 4AVP with kt200.
![](https://www.kt200.org/wp-content/uploads/2022/12/kt200-marelli-4avp-03-576x1024.jpg)
Alright, next is to following on-screen guide to operate.