TestController already has a definition for this series LCR, so you're better off using that than anything ET provided.
ET provided software runs perfectly with a minimal learning curve, if run as Administrator ... issue that is probably related to the new security features of Win11/obsolescence of the software itself.
TC ... I had to modify the definition. The new firmware (that is newer of anything reported in this topic) identify itself as
;; ELEC,ET4410 ,1xxxxxxxxx3 ,V6.00.2423.059 V1.12.2103.008
Please note the whitespaces; seems they switched to a fixed lenght (15) for model and serial num.
Also the serial and veriosn are again switched ...
Learning curve of TC not so steep; yet steeper than pushing the software buttons that resemble the instrument keyboard.