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Original thread:
Post 2 made on Saturday January 4, 2020 at 13:27
Daniel Tonks
Wrangler of Remotes
October 1998
URC did have 2 versions of their software, updateable and non-updateable. But, that software line hasn't had an update in a long time. I think the RX820 Editor might be newer than any of them.

Searching that problem comes up with a few possibilities:

1) Com port number is incorrect (basically indicates that its getting no response from the remote)

2) Need to run as administrator

3) Bad / wrong cable (ie. using a Pronto cable instead of a URC / Take Control cable, or broken leads)

4) Another program is using the com port

Since those don't seem to apply to you... best I can suggest is try another computer. If the problem persists, you could take the remotes apart (search for how) and see if there's any crud or obvious damage to the serial ports, which seems like the most likely answer right now.

You could also try inserting the cables slowly, or not entirely all the way, or bending/pushing on the cable to see if you can get any response.

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