Why do you think that your new NanoVNA needs a firmware upgrade? If you purchase a known version, there should be no reason that a new device should immediately need a firmware upgrade.
After you have used the device for some time and have determined that there is a defect or a documented feature that is not working properly, then you can look for an upgrade.
In summary, in response to your questions...
1. "Best" firmware version should have already been installed unless you purchased a knockoff device.
2.? Check the reviews for the product you purchased (this should have been done before your order was placed).
3.? You did not buy your NanoVNA with a case??? Most NanoVNA devices can be purchased with a suitable case.
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On 3/9/2023 5:40 AM, John Knight via groups.io wrote:
Hi,
I am awaiting delivery of my first nanovna H4. It is going to be used to examine various types of mobile VHF aerial sytems swr performance.
I have never used one and I do NOT know which version or chipset it is using until it is delivered.
But while I am waiting for it to arrive I would like to try and understand the following -
1. Which is the "best" stable version of code that I am likely to require.
2. I read there may be "suspect" chipsets, how do I find out if the unit I purchased is a lemon or not?
3.Is there a professional looking case for the device available anywhere?
Thanks for looking.
Best regards - John
