Today we've released UTM 9.605. The release will be rolled out in phases.
In phase 1 you can download the update package from our download server, in phase 2 we will spread it via our Up2Date servers.
I have been working with Sophos for over two weeks. The Cloud Formation template update fails. Still have no resolution.
Its unbelievable how little oversight goes into QA for these firmware updates. This marks the third major issue we have had updating UTM firmware.