You could try to dump you original AK2i and write it to your clone.
At least @Some1CP managed to do it successfully: https://gbatemp.net/threads/how-to-convert-an-r4i-ultra-r4ultra-com-clone-into-a-legit-acekard-2i-using-a-hacked-3ds.473764/
My suggestion is, that you try the following (at your...
