The hotfix is only for updating 1.09(b) to 1.09c, sorry.
It doesn't contain any of the new images and animations.
If you're on PC, I guess you could try copying the "cache" subfolder from your 1.05 installation to an installation of 1.09c.
Since the info what lines have been seen doesn't seem to be stored in savegames, that's the only data I can think of that might be responsible for storing this info.
Though 1.09 makes a pretty big engine jump from Renpy 8.0.3 to Renpy 8.3.7, so no guarantees that this works and doesn't break everything ^^'
Definitely make a backup of the 1.09c cache folder first.
All that being said, 1.09 adds only 3 new types of content:
- The showers in the westwing and eastwing,
- some very late-game beach bonus events,
- and some very late-game marriage options.
No other new content in the main game sandbox or story, so if you completed all content that was in 1.05, identifiying the new content should be fairly straightforward, because anything not listed above isn't new.