I changed the driver and problem solved!
??? Thank you!
??? Mark Jordan, PY3SS
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On 05-Feb-25 14:36, DiSlord via groups.io wrote:
NanoVNA App need use DFUSe driver for device in DFU mode, by default windows install driver for STM32CubeProgrammer (this driver allow flash in this software, but not work for NanoVNA-App or DFUSeDemo)