I'm having the same issue. I've tried to use the updater on a Mac Book Pro running Catalina v.10.15.5 with no joy. I've started the POD Go in update mode (pressing page > while powering on), I reconnect the usb and start the Line 6 Update software. Updater does not seem to detect the device. i tried this with multiple USB cables. I have opened a ticket with Line 6. I'm waiting on their response. If anyone has insight into this issue, I'd appreciate the help.