Hacking How can I remove a NNID off a 3DS without calling Nintendo or format?

[Pokem]

Sooooo, I sold my 3DS to my friend, and he downloaded many games on it with A9LH and stuff.
Before I handed the system to him, I foolishly though that formatting via. TinyFormat can take off a NNID, but I was wrong because he still has my account on the system. Sooo, how can I take it off the system without formatting because he has made many progress on his games?

 

[aos10]

Can you make system transfer?
If your friend is near you,restore your old nand then make system transfer.

 

[Pokem]

Can you make system transfer?
If your friend is near you,restore your old nand then make system transfer.

Restore an old nand? which system?

 

[aos10]

Restore an old nand? which system?

On your old system that your friend has,i suppose you still keep old back up for it?

 

[Posghetti]

Just do the unbanning process from the Miiverse thread. (How to unban)

 

[Pokem]

On your old system that your friend has,i suppose you still keep old back up for it?

I don't think I do.
How about making a new backup now, do the transfer, then install the backup?
Would that work?

 

[aos10]

I don't think I do.
How about making a new backup now, do the transfer, then install the backup?
Would that work?

Making new backup won't do anything,because even on your friend's 3DS he won't be able to sign to your NNID,because in Nintendo server your NNID us still tied to a system.

Either forgot about your NNID or call Nintendo that your system is stolen or broken and request system transfer to new system.

 

[Posghetti]

Making new backup won't do anything,because even on your friend's 3DS he won't be able to sign to your NNID.

Either forgot about your NNID or call Nintendo that your system is stolen or broken and request system transfer to new system.

He can just use the unbanning process from the Miiverse thread to remove his currently linked NNID so that he can link a new one...

 

[Pokem]

Making new backup won't do anything,because even on your friend's 3DS he won't be able to sign to your NNID.

Either forgot about your NNID or call Nintendo that your system is stolen or broken and request system transfer to new system.

aw x.x such a hassle, but oh well. I'll give Nintendo a call tomorrow

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He can just use the unbanning process from the Miiverse thread to remove his currently linked NNID so that he can link a new one...

would that work without formatting anything?

 

[aos10]

He can just use the unbanning process from the Miiverse thread to remove his currently linked NNID so that he can link a new one...

But he said his old NNID on other system and used tinyformat on it,so actually his NNID is still there but he can't used it unless he has NAND backup.