On some USB sticks, upgrading the Persistent Storage was too slow and failed with the error message "*Upgrade of persistent storage failed*".([[!tails_ticket 19728]])
[[!tails_ticket 19728]] was affecting 5.14, and it might still be present. If you encounter this bug, please [[send us a *WhisperBack* report|doc/first_steps/whisperback/#whisperback]].