How to Fix CAT ET3 Error #134: ERR_INVALID_DEVICE

Problem:
Hey we try to connect to our current cat et3 installed program and do not have any luck, it errors a 134 saying device not recognized, any ideas?

Error:
RP1210 Compliant Device – Communications Adapter Error
Error # 134
ERR_INVALID_DEVICE


Reply:
Is this an error that occurred during the car diagnostics? Could you tell me the machine model and years ?

Problem:
We deleted our 2023 ET and installed the 2019 ET provided with the comm adapter wondering if that was our issue.
we get same result with the 2019 installed as well
we just tried on a CAT 150M grader with same result.


Reply:
Thanks for your feedback, engineer checked your picture and he said you have changed to the incorrect driver

Pls choose the default driver as picture shows, otherwise software unable to communicate with diagnostic tool.


Feedback:
Thank you, it works, thank you for your help.

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