Ok, after a couple of months on the shelve my 2.8inch NanoVNA-H Hardware version is bricked (I think!).
From my reading online, it sounds to be common, I just hope newer firmware will prevent this?
I downloaded NanoVNA-H4_20210131.HEX from one of your posts, hope it is the correct version, there seem to be many variations.
And I have an ST-Link V2 Mini STM8/STM32 unit coming from Amazon.
just a bit confused (a lot) as to what software I need to do this. Obviously, I can not do a DFU process, since I can not communicate with the unit even holding the select center switch during powerup using DFUSeDemo, can't find any devices. Tried the select key in all possible positions during power-up Nothing!
The exact symptoms, before I jump to a conclusion, are at power-up get white high raster screen with no data or graphics, battery led (RED) is flashing at approx 1 pulse/sec, upon power-up the Blue System LED does show some random activity and then starts flashing at approx 1 pulse/sec.
the unit is enclosed in a plastic enclosure, opening it the PCB is ided as NanoVNA-H V3.4
If this unit is NOT Bricked, then how do I bring it back? Hard reset?
hope you can help me
Thanks
73
Richard G. Desaulniers Sr., VE2DX
