The US Standard N3DS (non-XL) comes with a minimum firmware version of 9.5. If you are looking for an exploitable console stay away from these.
At this point most systems will have a firmware above 9.2. You should work off the assumption that any serial number not on this list will be above 9.2.
Note: If your N3DS is missing either the 3d demonstration video (paper airplane video) for US systems or the Tomodachi Life demo for EU...
N3DS XL Firmware by version number
At this point most systems will have a firmware above 9.2. You should work off the assumption that any serial number not on this list will be above 9.2.
Note: If your N3DS is missing either the 3d demonstration video (paper airplane video) for US systems or the Tomodachi Life demo for EU...
N3DS XL Firmware by version number