Compatibility perimeter — & rollback updates / Metadata TUF

This topic is an official beginning of the Team HexaOS ; it does not represent a user's testimony, nor does it represent a test result already obtained. Theme : **Metadata TUF**. Subforum : « & rollback updates ». Objective of the theme : controlling roles, versions, signatures and expirations. Subforum rule : prepare a reversible update with explicit identity, health and return. Angle proposed : « Compatibility perimeter ». Instruction : document an exact configuration and the limitations of what has been observed. Indicate only HexaOS 3.0.0-rc1, publishing, the identity of the artifact, the environment, the preconditions, the steps, the expected result and the observed result. In the snapshot of August 20, 2026, eight out of thirteen editions are qualified and the overall verdict remains NO-GO. An idea, a presence in the sources or a partial essay never validates other editions. Remove keys, chips, internal addresses, personal data and raw logs. This official thread is delivered read-only; no response, vote and commitment counter are assigned to the community.