The Kindle is accessible via Finder just fine and files can be read / created. Underlying error: Operation not permitted: u'/Volumes/ Kindle/ driveinfo. If you device has a 'Reset to factory defaults' type of setting somewhere, use it. Common fixes are: try a different USB cable/USB port on your computer. You should contact the device manufacturer for support. IOError: Failed to access files in the main memory of your device. py', line 161, in get_device_ information py', line 473, in _get_device_ informationįile 'site-packages/ calibre/ devices/ usbms/driver. py', line 90, in runįile 'site-packages/ calibre/ gui2/device. calibre'įile 'site-packages/ calibre/ gui2/device. However, after updating to Catalina, it fails with the error:ĮRROR: Error: Error communicating with deviceįailed to access files in the main memory of your device. On my iMac I've always had success connecting to my Kindle with Calibre.