I have made some progress. I wanted to be able to extract the FW from my device for backup. I can't seem to find FW that matches mine online. This () seems to be the closest. However, if I download the DFU, convert it to BIN and compare using STM32CubeProgrammer, they do not match. I extracted the firmware using "dfu-util -d 0483:df11 -a 0 -s 0x08000000:leave -U /Users/USERID/DELETE/test.bin". The log is attached. The extracted file is 130K and most of the FWs I see online are under 100K. That concerns me? If I compare using STM32CubeProgrammer, they do match. I then flashed this back to my NanoVNA using STM32CubeProgrammer. The log is attached. If I compare the versions from the VanoVNA (config | version) pre and post, they are identical. I guess next I will flash an updated FW, maybe the one that removes SDcard support and allows for 8 saved calibrations. My only concern at this point is the discrepancy in file sizes. If anyone can explain, I would appreciate it?
73
Peter
