My Macbook air (late 2011) USB Ethernet adapter stopped to work after I installed Samsung Kies and Android File Transfer. I already removed the apps and the USB continues to not work.
In System Report (About this mac -> More information) in the USB tab shows the device working with no problem, there is no USB issue, I already plugged other devices (USB HD for Time Machine and my iPhone). I also tested the cable and the USB Ethernet adapter and it works fine in other Macbook air.
I tried to remove the service and add it again and it keeps showing Cable Unplugged.
I upgraded my mac from Lion to Montain Lion trying to solve the issue, but no success and tried DHCP and Fixed IP in the config.
Does anyone have a clue of the issue or know a way to reinstall the USB drivers to fix this problem?
First of all I'd like to Thanks the Apple phone support. I really apreciate your attention.
We tried a lot of stuff ( PRAM reset, Removing USB config, Creating new network location, restoring using the time machine) none solved my problem
At the end I decided to restore my macbook air from scratch. I don't know why, but Montain Lion Recovery also failed so I was instructed by support to run a Internet Recovery (Command + Option + R). Few hours later my USB Ethernet is back to work.
Now I have to waste my time copying back my files and reinstall all apps.
We could define if the problem is the Samsung or Android apps, but anyway I'll not install this crap on my Mac again.
If you are a Samsung SIII owner like me, install that software in a virtual machine or do not think in sync it with your mac.