Yes, I used the latest script. These are the files created after a tried to start the upgrade. In dbsrvresp_update i have the DO_UPDATE_INSTALL=true which the ase log says to make it false.
From my point of view is something else i'm not doing right, like the command i used.
Note that upgrading an ASE server from 15.7 to 16.0 is a major upgrade which requires special upgrade steps. Beside that rsecssfx part there is nothing about this case in the note.