yeah, i just got it to work. i had to replay all of chapter 7 on the 1.0 patch, resuming a suspend save at the end of the battle didn't seem to work. beat the map in 14 turns and it unlocked.
e: also visited all the houses, of course
posts on the blog + page on the hack's website says that the requirements for chapter 7x were messed up by the 1.1 patch in some way. some people said that saving during the battle and switching to a rom on the 1.0 patch works to get the chapter. anyone with the early version of the patch want to test this?
also wouldn't mind if someone uploaded the 1.0 patch somewhere so i could try this. or i could just wait for 1.2, whenever that comes out...