Hi, Thanks for you response. But I think that part of the problem is that I'm trying to access the board using a bluetooth FTDI programmer. I ordered the M5 Programmer board and see if I can pass the error. For your info, when I provide power to the board via the 5v pin, I observe a Red, then a Blue and finally a green light (which breadths). I also observed that I got an IP for the board. I have tried to access it via the UIFlow but no luck. Anyway, thanks for your assistance.