vCenter Server Appliance checking for update hangs

Hey all,

I just wanted to update a vCSA appliance. Unfortunately it hangs in the status "Checking for aivailable updates..." as has no internet access.

I changed the settings to CD-ROM  updates, mounted the update-repo iso and restarted the appliance, but no luck, it's still in the checking for updates mode.

Anyone has an idea how to stop this process? As the check and install update buttons are disabled during the update search.

Thanks

Tim