@UnknownRespected
Thank you for suggesting that I use YSMenu on the cartridge instead of the default firmware. That has solved the issue, plus I like that one better anyhow. :-)
@YoshiMoshi
I just want to thank you, and the others who did this, for providing these Roms for all to have. It'll...
Unfortunately, as it stands, I can only do that with gen 6 + right now. Don't have the old version of AR... Just the 3ds one. :-(
Edit: I'm currently attempting to format and reinstall everything on the card. Will see how that goes. :-)
The one on my phone seems to work fine with it, but I can't use it with the actual game that way. My best guesses are that the Rom can somehow detect being on a cart, or there's a bug in the cart.
Yeah, I wish I knew someone that had it, whom I could ask for help... I've been able to run all but this Rom and the jirachi Rom thus far. It's just irritating because I was really hoping for that Arceus. :-\
I'm not really sure what's causing the issue, but the R4 in the question is this one:
http://3ds-flashcard.com/home/8-r4i-sdhc-3ds-rts-2017r4-card-for-2ds-3ds-xl-dsi-xl-ds.html