On Thu, Oct 7, 2021 at 10:30 AM, <friedrich.kairo@...> wrote:
flashed my NanoVNA-H withNanoVNA-H4_20210131.dfu, i think this was wrong.
White screen and usb port is no longer recognized. What should i do?
Friedrich
db6px
You have to reflash with the correct firmware. To get back to DFU mode you have to short the VDD and Boot0 pins inside the NanoVNA.
The procedure is all described in the "Absolute Beginners Guide to the NanoVNA" in the files section of this group. This is also described in this groups Wiki.
Roger
Roger Need