it has been more than a few years since I upgraded ISY to its current version is 5.0.16C. I

help-> about show that it is ISY 994i (1120)

is there a newer firmware that I could use?

if so, where do I download it?

thanks for any help.

UDI announced that the 994 series was end-of-life almost 3 years ago. If there is newer software, I believe one of the Help drop down menu items would indicate you could upgrade it.

5.3.4 was the last ISY994i firmware.

If you have a Z wave card. Depending on which version you have. Series 300 or 500. 5.3.4 was only for series 500.