Keep us
Okay. I'll explain to you what this means, and your options. What you got here is not a full NAND backup, but rather the decrypted CTRNAND partition only. See
here (also called the CTR-NAND file system). This does not mean the FW 1.0.0 state is lost, but it will make things difficult. What you don't have at this point is the contents of the TWLN partition (which is not critical) and the FIRM0 / FIRM1.
If you want to try to go back, try this, but keep in mind there's a bricking risk with this:
- Use the valid 6.x NAND backup as base
- Inject the 1.0.0 NAND.img as FAT16 partition, using 3DSFAT16tool
- Get the 1.0.0 FIRM from somewhere (it is identical over all regions)
- Inject the FIRM to both, FIRM0 / FIRM1 via either 3DSFAT16tool or 3DSFIRMtool. Latter one is recommended
- Ignore TWLN for now (you may fix this at a later point by injecting another same region 1.0.0 3DS' TWLN)
- Restore via D9
If you do this, keep in mind, bricking risk. Also, if you do this, make sure you don't lose the XORpads, you may need them at a later point, too.