@d0k3
Do you remember the "rare 2DS which has 1.21GB NAND size"?
Unfortunately, the recently released JPN Pokemon RGBY exclusive 2DSes are in that case.
Those 1.21GB NAND size 2DSes's emuNAND can only be formatted in 1.21GB / 2GB legacy.
But GW / rxTools / other CFWs are not intelligent enough to recognize that "O3DS/2DS with emuNAND over 1GB" properly.
3 month ago, a GBATemp member gave a worked solution about this:
1) Borrow an O3DS
2) Format 1GB legacy emuNAND on that O3DS
3) Force injecting 1.21GB 2DS NAND/emuNAND backup to that 1GB legacy emuNAND partition with emuNANDTool 1.0.3
So.....
I don't know whether current emuNAND9 version can force formatting 1GB emuNAND partition for O3DS/2DS or not.
If it can, then this problem is already resolved.
If it cannot, I would like it to be added on next version.
Thanks for reading this article.