ROM Hack Unchained Blades undub problem

[medoli900]

I'm trying to replace the sounds folder in the US version of the game for the JP version. When I start the game, the game freeze just after "ART" logo finish to fade out. I guess it's because it try to load a sound file, but fail to do it. I still can go to the home menu, so it is just a game sided freeze. I tried changing the locale (I am on A9LH v1 + Luma 6.6 [insert string of number and letter] (dev)), but then it only does a bootloop when I start the game.
I used two .3ds personal dump (tried four times to ensure that it is not a bad dump) of Unchained Blade reXX and two .cia personal dump of Unchained Blade US using Asia81 toolkit.

 

[Nightwinter]

Mmmm no Idea, Ask Asia81 or Canzah for undub support!!

 

[offalynne]

Did you have any luck figuring this out?

 

[gapwanderer]

How exactly are you replacing the sound folder? It might be that the number of files in the sound folder are different between the JP and US versions.