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I've ordered a new nanoVNA-H4 . As it is new, I don't expect I will immediately need to upgrade the firmware. However, I want to be prepared. I use this command to upgrade the firmware on my tinySA

I have a NanoVNA-H which I haven't used for 2 years. Just pulled it out of the cupboard and upgraded to latest firmware (1.0.69). The spane is set to 1MHz to 40MHz, and it has been calibrated. It

The answer to your last question: Yes, the previous firmware can be restored, if you saved it before the update using DfuSe (in the window on the left) or if you can find the previous firmware

Al, I know that everyone has different tolerances and the basic knowledge of technical things is different. If you have read and understood my writing, you should know that the firmware can be

Refund from this vendor then buy something else. Based on my experience and the two others here with apparently bricked H-4s, the claim that these things are brick proof seems overstated. I-m leaning

Hi Al, I hope you mean a "replacement" rather than a refund. The NanoVNA is such a great piece of kit. You have been remarkably persistent trying to get this going. I was just wondering if you know

I believe I have confirmed that the FW loaded was DiSLord NanoVNA-H build date Dec 11, 2021. The version reported by the firmware as delivered matched the dfu load in his Github. My device was sold to

"almost" same exact issue here, Fred... now i know why previous owner never updated the FW. i should have left it alone ! ' least it turned on and was able to play with measurement functions prior to

complete #newbie, but have followed all instructions, performed update and DID use correct file for the -H4 nano ( NanoVNA H4 v1.2.08.dfu) even received successful upgrade message. turned unit off,

I have tried everything I know how to do. Deleted and reinstalled DfuSe and drivers, STM USB Commport driver, etc. Tried Zadig, USBDeview, and TeraTerm. It runs the installed firmware, Powering on

Got the microscope working by re-installing the app. Unfortunately reinstalling everything NanoVNA did not change the operation. Inspection of the USB-C under microscope did not reveal anything

I have tried two different A to C cables and have tried flipping the C end. No joy.

The typical USB-C to USB-C (and Thunderbolt) cable has 4 possible orientations, too.. 1 to 2 1 flipped to 2 1 to 2 flipped 1 flipped to 2 flipped And then there's the end for end swap too. I've

Because overthinking is what I do. Jk Actually, I tried a different cable on the computer where it worked minutes before it didn’t after I loaded new firmware. I also tried it on another computer

Al, Not sure why you are inspecting the USB connector at such a low level.? The connector itself is a very reliable item.? Is your problem with the USB-C cable / connection or the driver in your

In my "New Problem...." post I reached the conclusion that there was something wrong with the USB port on my NanoVNA. Today I took a close look at the connector. I have a sandwich construction

Read this https://coppermountaintech.com/optimizing-vna-measurement-speed/

thank you John, did not find this before. 73, dan

Thanks. Display works normally when running NanoVNA firmware, so CPU is OK.

It seems to me the polite thing to do is tell Alan. I'm sure he cares were he to have made an error. Alan has always been very helpful me and he cares about those wanting to learn about electronics.