Jetson Orin Nano does not boot after flashing Jetpack 6

I think this issue seems very similar to the issue I was facing and @DaveYYY was helping me as well on this thread Jetson Orin Nano not booting up - #12 by DaveYYY. I was trying the SD card flashing and booting method though. I am still waiting to get my USB<>TTL-cable to get the logs. But from this discussions in this thread, did we buy a wrong board “third party board” instead of the original NVIDIA board ? I ordered from Amazon.com , there were 2 options one for 499$ and other was 599$. I bought the 499$ development kit as it had good reviews and “Amazon Choice” label on it. Now I am worried I probably bought the wrong development kit.