Why can't I update my firmware/OS?

  • I just bought a used (but mint condition) Kemper Stage. It currently has firmware version and I'm trying to update it to the most current version. I'm connected directly from the Stage to my Mac using a USB cable. This is the same way I connect and update my other Kemper and it works perfectly. In Rig Manager, it asks me if I want to update and I select yes, it begins to download the file and then when it's done, it does nothing.