Hacking Rom hack doesn't work on specific 3ds

[RoyalLemons]

So I have pokemon volt white 2 on my r4 flashcart, I believe it's a r4 3ds rts or something like that.
Booting the rom works and all but after choosing my name and Juniper is all like "go to the world of pokemon", i get a black screen that never ends.
However, on my old 3ds the game works fine. I'm able to go past where that black screen would be and even save.
I've tried using that save on my new 3ds where i'm getting this issue, but loading the save causes an endless black screen.
Other games on the r4 work. The only one that has this issue, specific to this new 3ds is volt white 2. I've also tried blaze black 2 which has the same scenario; works fine on the old 3ds but not the new 3ds.

Any ideas? Thanks.

I've also tried loading it on dsimenu++ but I just get a message saying "Error!" with the loading symbol red...

 

[RoyalLemons]

If it wasn't clear;
My R4 is able to load a game on one 3ds, but it fails to load it on the other 3ds.
Is there anything I could try to fix this as my partner uses the 3ds it works on, thus I can't just leave it like this?

 

[Durelle]

SD your 3dss have cfw?

 

[RoyalLemons]

Yes, both are on Luma 9.0 and running firmware version 11.7 if i recall.

 

[Durelle]

I dunno if this would do anything but the only thing I can think of is this.

https://github.com/AuroraWright/Luma3DS/wiki/Optional-features

Check to see if both of those are the same in the Luma config

 

[RoyalLemons]

Thanks for your response.
That's one of the first things I tried, making the one that doesn't work, match the settings with the one it works with.
Still didn't fix it.

 

[Durelle]

Have you tried ntr?

--------------------- MERGED ---------------------------

What I meant to say, check to see if the ntr is the same version

-edit-

Ignore this post, it made no sense

 

[RoyalLemons]

Do you mean NTR cfw through boot ntr? Because that's what i've tried and it still gets to a black screen.
Pokemon ranger: Guardian signs also don't boot at all. black screen right from the start yet the game boots fine if I put the r4 in the old 3ds...

 

[Durelle]

I'm honestly not 100% sure then. It could also maybe be related to this

https://gbatemp.net/threads/r4i-3ds-black-screen-on-luma3ds-a9lh-o3ds.432572/

Something about a patched twl

 

[RoyalLemons]

Thank you so much, what you linked me to helped me fix it. I had a patched twl_firm and needed a clean one installed.

 

[Durelle]

Your most welcome ^^ enjoy the game, I haven't tried it yet maybe I'll give it a try once I finished ultramoon