@ShanghaiTimes After having a look around, I see still no update on a production release of the TpPLC utility for recent (and now not-so-recent) MacOS versions. Meanwhile tp-link continues to sell...

@Solla-topee I have the v4 hardware version of TL-WPA4220(US) and there appears to be no MacOS TpPLC utility for this version. Can that be correct? I find this very surprising. Please advise.

See @Kevin_Z's reply to my post here: https://community.tp-link.com/en/home/forum/topic/204068 The word is that a production-quality tpPLC utility for an up-to-date MacOS should be available soon....

@Kevin_Z Referring to your question, the firmware version 190523 I was trying to install is described at this link: https://www.tp-link.com/ca/support/download/tl-pa9020p-kit/#Firmware which looks...

[Note: in order to make this post, I had to select a model from a pulldown menu. The pulldown menu is outdated, and does not contain the model TL-PA9020P(US), so please ignore the "7020"...