On Mon, Jan 20, 2020 at 03:24 AM, <brianbgarber@...> wrote:
Hello all, I'm at a loss. I was able to update firmware by going into DFU mode
on my nanoVNA, but now that is not working at all since firmware version
0.5.4. The DfuSe Demo (v3.0.6) is not recognizing the nanoVNA"c when I enter
DFU mode either via "Config", "Reset and Enter DFU" or by putting the short
across the pins to force DFU mode. My PC recognizes the difference between my
virtual com port (normal mode) and Universal Serial Bus devices, STM32
BOOTLOADER mode (DFU) mode.
I'm not sure what has changed. Any troubleshooting tips would be greatly
appreciated!
Thanks,
Brian
There are two ways to upgrade the firmware:
1. DfuSe
2. STM-Link which requires an STM-Link v2 dongle
You need to use the latter to recover.
More descriptions on the wiki or my web page. ha3hz.hu
I wish you a successful fix.
73, Gyula HA3HZ
Gyula Molnar