Hi
Thank you, Larry Rothman for your help.
I'm sorry, but after trying everything, I give up.
1) installed the firmware version that you indicate to me (V1.0.69), also v1.0.71 and V1.1.
2) Uninstalling all software and controllers on the PC.
3) I make a clean installation of VCP_V1.5.0_SETUP_W8_X64_64BITS.EXE and DFUSE_DEMO_V3.0.6_SETUP.EXE.
4) Terratem installation. (The nanovna is connected and disconnected from the terminal, as well as Teraterm perfectly recognizes the serial port with the installed driver STMicroelectronic).
5) Nanovna-App works in DFU mode, he installed the different firmware, but it does not recognize the Nanovna in serial port mode.
6) Back to original firmware V.0.5.0 and everything returns to normal.
So far my experience. I hope that one day you see the light. LOL
I am very grateful for your help.
Antonio - EA7HJ.
