Hello all, first-timer here. The forum and guides have been helpful in setting op my 2DS XL with cfw. However, I encountered a little problem and wanted to try and fix it myself. That turned into a bigger problem that I cannot fix myself, I'll try to keep this post clean and clear.
Pokemon Ultra Sun not booting (small problem)
Yesterday I followed the 3DS guide and used FBI to play some titles. While cias for Pokemon Ultra Moon (including a separate cia for the 1.2 update), Fire Emblem Awakening, Bravely Default and Bravely Second worked, the cia for Pokemon Ultra Sun (including a separate 1.2 update) kept crashing. I got different cias from different sources, but the error remained. That was the small problem I tried to resolve.
Starting Pokemon Ultra Sun, I got the following error message:
An error occurred (ErrDisp)
Error type: generic
Process ID: 67115840
Adress: 0x00000d1a
Error code: 0x00000d1
Press any button to reboot.
So, I searched for the error message, and I found that the Luma 10.X error messages are sometimes nonsensical. Therefore, I got and used another boot firm file from Luma 9. That did not resolve the issue but gave me another, maybe a more insightful (not to me) error message:
An error occurred (ErrDisp)
Error type: generic
Process ID: 39
Process name: momiji
Process title ID: 0x00040000001b5000
Adress: 0x00346e74
Error code: 0xd900458b
Press any button to reboot.
Internal SD card not accessible (big problem)
Not wanting to come across like the total beginner I actually am, I figured I would check the basics. I started with my SD card, since that's the first thing I usually saw veteran users recommend people with issues.
Today I followed the first five steps from TurdPooCharger's post (cannot link to it, but from today, in thread called "I got errdisp error... maybe changed region caused problem??"). The SD card was backed up, quadruple reformatted, checked with H2testw (no errors detected), emptied and refitted with the backup I made this morning.
And that's when the small problem I had (i.e., Pokemon Ultra Sun not booting while the other games worked fine) turned into a bigger problem:
Cannot display the software on the microSD card. The microSD card could not be accessed.
My question for help
It seems like I did something to my internal microSD card and now my 2DS XL cannot read it any more. The System Settings still mention that firmware is the Sys variant, so I assume it has something to do with me reformatting the card.
Sorry for the long post. If anyone can help me with either (i) getting my internal SD card recognised by my 2DS XL again, or (ii) what I could do about Pokemon Ultra Sun not working when the internal SD card did function, I would be really grateful.
Some closing information: I am from Europe and have made sure to get EU/PAL or region-free versions of the cias.