
The OP is most likely trying to follow 3ds!Guide which downgrades the console in order to dump the otp.bin. Most likely why it's on. 2.1 and yes technically it's not possible and it can be weird, plus by putting the n3ds in sleep mode here can result in an unrecoverable brick.Any idea what ver the sysNAND backup is? You could always just restore that with Decrypt9/Hourglass9 or a harmod.
Your NEW Nintendo 3DS XL is at 2.1?
That's not possible w/o downgrading, more info about it would be nice.
Are you the original owner?
What was being done to the 3DS prior 2.1?
What's the current situation?