How to Fix Foxflash Reading VW MED17.1 by Bench Error?

One of Foxflash.co.uk customers feedback:

I had an error with foxflash programmer when reading VW Med17.1 ECU. foxFlash failed to read and gave an error bench not supported.What should I do?

Here’s the solution.

The error indicates your ECU has been updated, foxflash is telling you to read/write in Boot Tricore.

Tips to read BOSCH MED17.1 [TC1796 INT.F.] in Boot Tricore:
Compatible with VW, Audi, Seat, Skoda

Step 1: Read and Write ECU
Follow the Pinout and the boot as below to connect Foxflash and ECU via the multifunction cable
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Boot
→ SAK TC1796

Step 2: Search password
Disable the boot mode by unsoldering the grey wire. Connect the pinout below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Tool Password
→ OBD PASSWORD TPROT V08 VAG
→ Click on “Find Password” and follow the software messages to do

If the password was found with this system, go directly to the boot step to read and write the control unit.
Otherwise, see the next step as below.
Step 3: Search password
Connect the pinout below.
Use the driver:
→ TOOLS BOOT MODE
→ INFINEON TRICORE Tool Password
→ PASSWORD BFT
→ Click on “Find Password” and follow the software me foxflash-clone-benz-vgs3-audi-med9.1-vw-med17.1-6ssages to do

If the password was found with this system, go directly to the boot step to read and write the control unit.
Otherwise, keep the previous pinout and add on the PCB two resistances 470 Ω as shown: