Is my nano a02 or b01 ? how can I know it for sure?

Hello to everyone.

I’ve bought this jetson nano :

https://www.amazon.it/dp/B084P23M3R/ref=pe_3310731_185740161_TE_item

it says that it is B01 version,but I suspect that it is not B01,but A02 and I want to explain why I have this suspect. At the moment I’m trying to configure corrrectly qemu and kvm on the nano because I want to emulate windows 10 arm. I’ve followed the explanations that I found on this thread :

at a certain point,they say to use a file,called “tegra210-p3448-0000-p3449-0000-b01-kvm.dtb” provided by a guy. I did it,but my board does not want it. If I use it it stucks on the nvidia logo. I suppose that this file is for the nano vers. B01. mine. Today I’ve understood what to do. Basically I used the file “tegra210-p3448-0000-p3449-0000-a02-kvm.dtb” with the kernel with kvm enabled provided by the guy “mr.chrismitchells” and it worked ! my nano is able to boot the kvm kernel with that file. This is where my doubt arises : why the a02 file works and b01 not ? Is my board a02 and not b01 ? Even if on amazon,where I bough it ,it says that it is the new version b01. I want to be sure that they haven’t sold the old board instead of the newer one.

This article explains differences between A02, B01 and 2GB: https://tutorial.cytron.io/2020/10/14/nvidia-jetson-nano-developer-kit-a02-vs-b01-vs-2gb/. Just look at your board and compare with the following photos:

If you have two camera slots, then you have Jetson Nano B01.

I use tegra210-p3448-0000-p3449-0000-b00.dtb, but it does not mean I have a special B00 board. I have a normal B01 board. DTB file can have any name, in my case it was its default name. Whatever a given DTB will be compatible with particular board(s), depends on its content, not its name.

ok. I have B01. Anyway,at the moment the kvm kernel stopped working with the file tegra210-p3448-0000-p3449-0000-a02-kvm.dtb. its not stable. I made no changes inside the /boot folder,but it does not work anymore.