I am comminting here because you suggested me to move the discussion here from here(BalenaOS on nvidia Jetson Nano devkit not booting to OS - #8 by venkatraman)
I will not confuse you, very first I have tried with Nvidia nano devkit and it failed to boot. Once this is up I will go and check the carrier board, as you pointed it is custom build and I need to figure it out more for that.
The issue I am facing currently is with standard nvidia devkit.