Phone Storage locked, no access, no saving files or browsing

On the S7 there was an unusual requirement to upgrade via 1.17.1-q-herolte in February 2024. Did the “jump” which you made perhaps exclude that step ?

1.17.1-q-herolte was a “special release” the purpose of which was to ensure users did not bring forward Adoptable storage. Here is the link to the Release Note v1.17.1-q · e / os / :rocket: Releases · GitLab . As I understood it and loosely speaking, this requirement was part of the team’s workaround to dealing with the change of storage encryption method used beyond Android 10 (Q).

Here is a forum search for herolte + 1.17.1.