I know that there was a problem with the Wifi LED binding in 2.3.0 at the release date, but I don’t know if it is resolved yet or not… If yes, how/where can I download just only this binding and place it in my addons folder? I don’t want to update to the daily snapshots, I want to stay on the stable release…
The corrupt file should be replaced with a working one in all the released files (see issue #3601).
If you downloaded 2.3.0 just after the release it could be that a corrupt wifiled jar is still cached on your disk.