Lmao I just got it on my first try, it was right in the beginning (25th line, address 00000190)... I feel so lucky right now
thank you so much for the advices, I really didn't want to waste 2 hours
to find the right one (I had 58 fragments = 3A, and there was around 15 of them)
but I still don't have the trophy, I'm uploading the save here before, so everybody can get it too