I cant mod my 3ds (mii plaza update is broken)
So I haven't found anything online, but I have a used 3DS (crt-001/original 3ds non-XL) from 2013. The old user did not update Mii Plaza before quitting (the update did not exist as it was 2015 when they quit) and now the eSHop is down.
I have run into an issue. Despite being able to update MP, when I insert the ID1 it reverts back to before it updated, and says that the update data is corrupt (I opened it and it said that the update data couldn't be found, and asked to redownload it.) This throws off the entire run of MSET9 and now I can't progress.
How could I fix this? Are there any alternatives for modding this way? I want it to get modded, I've modded a 3DS before (same model), but this one seems to have an error that is hard to find.
QUICK NOTE: MY 3DS IS NOT MODDED (adding this after bot-comments)