Finally I changed my Nano for a new, and I received it today. I turned it on and it worked but the battery was almost dead. I logged into my USB port to recharge the battery. After a while, I disconnected the Nano’s USB, I turn on the Nano and all what I had on the screen, it was a bright white, nothing else. I managed to get the firmware update 3.64 and now it function, but for how long …
To be honest, I wanted my money back because you after reading the posts on the forum member who have received their Nano and that did not work well when I had lost confidence. After two weeks my first Nano was already defective. Now, how long you run it my new? The idea of the Nano V2 is not bad but I believe he needs a good development before being launched on the market.
As you can see from the pictures, the square wave generator is not perfect on the new Nano.
Thank you to all who have helped me.