https://releases.ubuntu.com/focal/ubuntu-20.04.6-desktop-amd64.iso
Can you confirm "ubuntu-20.04.6-desktop-amd64.iso" is visible to usb-creator menu automatically?
https:/ /releases. ubuntu. com/focal/ ubuntu- 20.04.6- desktop- amd64.iso
Can you confirm "ubuntu- 20.04.6- desktop- amd64.iso" is visible to usb-creator menu automatically?