OK, was finaly able to get the NanoVNA-H in DFU mode and was able to find it in DfuSeDemo...
loaded the proper firmware DFU file and loaded it correctly as per the procedure...
the unit is still dead!...
While in DFU mode the Blue LED stopped flashing and did comeup in win10 as STM32 Bootloader like it should be...
the DfuSeDemo found the unit, I was able to load the proper firmware even did a VERIFY and confirmed it was loaded.
removed the jumper
rebooted the NanoVNA-H, blue led started flashing again and... wait for it... NOTHING
Just a white screen!
looks to me like the unit is not having firmware issues... instead I think this is a HARDWARE display issue???
comments or suggestions please
73
Richard VE2DX
