About schematic of Jetson Nano development kit

I have a Jetson Nano development kit, and it P/N is 945-13450-0000-000.
The carrier P/N is 180-13449-DAAF-A02.

There are 2 carrier schematics can be downloaded in website, one is released on 2020/01/15(schematic-1)(for version B01) and the other is on 2019/06/24(schematic-2). The schematic-2 seems not to correspond with version A02 carrier.
For example, Schematic-2 have one CSI connector, same as A02, but IC U21 is different to A02 carrier, U21 on schematic-2 is 8-pin, the actual IC U21 on carrier A02 is 5-pin.

  1. How many versions of carrier are there?
  2. Which version of carrier is schematic-2 used for?
  3. Is there schematic for carrier A02?


Best regards,

Hi, the current reference schematics are not the whole sch of dev kit carrier board, they are just reference to customer to do own design. A02 schematic is not released either.