VXDIAG PIWIS III PT3G possible to Diagnose Old Porsche?

There is a rumor that VXDIAG Porsche PIWIS 3 (PT3G) will not work on old models nor DoIP protocol.

VXDIAG PIWIS3=  Porsche tester ii + PT3G software (2017 up and DoIP models)

It is the only VXDIAG VCI supports Porsche (latest 2018 version) especially the latest models based on Ethereum:

For Panamera (971) 2018

For Cayenne (92A) 2018

For Macan (95B) 2018

For 911 (991) 2018

Tester III perfectly compatible with Tester II:

PT3G Supports Porsche both old and new from year 2005 to 2018.

For Porsche 911(997) (991)

For Boxster/for Cayman (987)

For Cayenne up to MY 2010

For Cayenne from MY 2011

For Panamera