Stm32 Bootloader Update Firmware By
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 nanoVNAc 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.
Any troubleshooting tips would be greatly appreciated Thanks, Brian.
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.
Tamil slokas and mantras downloadMore descriptions on the wiki or my web page.
I wish you a successful fix.
Gyula HA3HZ.
Also, I can connect via the STM32CubeProgrammer program over USB (see attached png).
![stm32 bootloader driver windows 10 stm32 bootloader driver windows 10](/uploads/1/3/3/1/133168739/242301522_orig.png)
If you dont recognize it, you can use USBDeview Utility to see whats preventing it.
Stm32 Bootloader Install The Troublesome
If your mouse and keyboard are both usb, do not delete it Delete and reinstall the troublesome or unnecessary driver.
In the image you can see where Ive highlighted a Port002.Hub, SMT32 Bootloader line.
However, the very last line is what shows up when I reset and enable DFU on my nanoVNA.
The serial number looks corrupted, does this mean that I must recover using the ST-Link v2 dongle I think I saw where that is less than 2 USD on the Chinese website.
Brian.
This is strange, but Ill chock it up to Windows Thanks again, Brian.
Search this forum for STM device in DFU mode using the Search box at top of page.
For some reason Windows sometimes replaces the driver STM device in DFU mode (for DfuSe Demo software) with the driver STM32 BOOTLOADER mode (for the ST-Link dongle).
Delete the BOOTLOADER driver (with Device Manager or USBDview) and then reinstall DFUse Demo software, it should put the STM device in DFU mode driver back (I think).
![stm32 bootloader driver windows 10 stm32 bootloader driver windows 10](/uploads/1/3/3/1/133168739/358302203_orig.png)