I know you can't lower the firmware for 9.3+ 3DSs without a backup, I know, I know.
I just want to know if I can backup my firmware on my current 3DS, so if something gets patched 10.2+, I can just go back to 10.1?
I just want to know if I can backup my firmware on my current 3DS, so if something gets patched 10.2+, I can just go back to 10.1?