ok!... Let me be clear... the unit was NOT loaded with -H4 firmware...
The unit was sitting on a shelf for a couple of months and when I pulled it out to use it it was... DEAD... Bricked... NOT WORKING... call ot as you wish it stopped working by itself not because I load -H4 firmware in it...
I tried running the DFU procedure and can not detect the unit, and yes I did follow the process to get the unit in DFU mode holding the Select switch while powering up, tried in all 3 possible position...
No I do not see any Jumplers on the pcb
I got myself an ST-Link V2 from Amazon, and I am simply looking for;
1- Software to download firmware in NanoVNA-H (Not using DFU!)
2- Proper site do download latest NanoVNA-H Firmware HEX file.
3- good site for step by step of the procedure
thanks for the help
73
Richard VE2DX
