@Pitmaster I would suggest downloading the latest snapshot, create a new USB image with dd, for example I use;
dd if=openSUSE-Tumbleweed-DVD-x86_64-SnapshotYYYYMMDD-Media.iso of=/dev/sdX BS=4M iflag=fullblock oflag=direct status=progress; sync
Where /dev/sdX is your USB device.
EDIT: Fix dd command!