Try this chip id: AE F8 81 90 (change the C2 F8 00 90)
Dont forget that may be more than one to edit.
Search for CTR-P-AXCE in all template
--------------------- MERGED ---------------------------
Oh, and dont forget that these informations are attached to your .sav
Maybe that is why you cant go online even changing the id.
--------------------- MERGED ---------------------------
If you want to erase your save, the only way is editing your .sav (change its header value to anything diferent) and restore to the rom. But do it after you inject the new template to sky3ds.
Then load the rom and the game will say that your save is corrupted. Start a new game end try to go online
Dont forget to boot the save to sky3ds when you restore a save. Do you know how to do it?
Keep the button pressed while insert the sky3ds in your 3ds. Remove it and insert again. Wait about 3 seconds, remove it and insert again. Now you can play the game