I get static noise after connecting my Kemper to Rig Manager

I haven't connected it to Rig manager for over a year now.. I was connecting it because I had purchased a couple of new sounds that I wanted to transfer.. The first message I get is that some of my sounds are corrupt, and I turned off my Kemper while it was syncing (Because Rig Manager told me to do so). I turned it on while holding the RIG button for thirty seconds, and when it was finished, all of my favourites was gone for once, but then a steady static noise is playing constantly.. Something is really bugged and I don't know how to fix it... If I click "Check for software updates", it states that I have the newest software already, which couldn't be true since it's been over a year? Any help is appreciated here. Can I for example reset the OS without losing my sounds and performances?