szangvil:
Defining the board as Uno does the trick and lets me upload the sketch.
What I don't understand is that I BURNED the SAME bootloader to both Nanos (mine and the standard). And to the standard, there was no problem and it acted "normally" where mine does not.
The fact remains that somehow you didn't load the SAME bootloader, as the baud rate used by a specific bootloader is part of the internal code in the bootloader, the same bootloader could not possibly work at two different baud rates.
Lefty