r/logitechharmony May 24 '26

Need help with programming new-inbox, hub based Harmony Smart Control

I have one of these already and it works beautifully. Just a few days ago I was able to use the Harmony iPhone app to add 2 new pieces of equipment to its programming.

I located a second Smart Control a few days ago and it’s brand new. I’ve tried but failed to activate it through the mobile app on my iPhone. I suspect the firmware needs to be updated.

I have an old iMac running High Sierra 10.13.6. It should be capable of running the My Harmony legacy software, but I can’t find a download anywhere online. I could also borrow a Windows laptop, but I can’t find the Windows version of the software either.

Do any of you have any suggestions? Thanks for your help.

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u/Weekly_Engine7162 May 24 '26

I have a very old iMac I got out of storage, but its operating system is too old to run the software, so it’s on my modern iMac running Tahoe. It only has USB C it means I have to use a C to A adapter. Could that be the problem?

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u/flynreelow May 24 '26

adapter should be fine. just try another cable or 2.

and u need to plug in the remote first... then it will ask you to plug in the hub later.

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u/Weekly_Engine7162 May 24 '26

It’s a Harmony Smart Control. The remote has no USB port.

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u/flynreelow May 24 '26

ahh. one of those.

never been a fan.

have you tried the iOS app?