Some users notice that the VAG MQB49 5C/5D disassemble key read function in the Xhorse Key Tool MIDI programmer does not work. The tool prompts you to read data with a VVDI programmer first.
Solution:
Xhorse Key Tool MIDI cannot read MQB49 5C/5D key data directly.
Use Xhorse Multi Prog to read the key data first.
Upload the data to MIDI to write the key.
Ensure the MCU adapter is modified for MQB49 5C/5D.
If reading fails, try connecting a 100-ohm resistor in series with CLK.
Tip: Test your setup via Help → Test 180 to ensure everything is configured correctly.
This process allows smooth key generation for VAG MQB49 5C/5D keys using Xhorse tools.
Skype: xhorsevvdi.com
Whatsapp: https://wa.me/8613983756354
Whatsapp: 
Skype: