I was able to update my fw using Logitech's normal method, afterwords, my remote performaned erratically....wouldn't change inputs on AV Receiver, had to keep pressing vol. up or down rather than just holding down the button. Items that previously worked fine under fw 4.3.

Then, I reinstalled the fw on both extender and remote using your suggested method and now everything WORKS PERFECTLY!!! I can live with the 4 device max on RF for the time being.

THANKS!!!!