0.33.0 - rev 3.x images for the NANO and the Guition
A NANO bought in August came up as chip revision v3.1, and the flashing tool refused every release we had. The board was fine. The image was built for the other silicon family, and the two fence each other off on purpose.
Both boards now build and publish a -rev3 image beside the plain one, each with its own update address, so a device is never offered the other family's build. The browser flasher offers the choice, and docs/FLASHING.md says how to ask a board which chip it has.