Terry, Yeah that's a problem with a lot of the software for these devices, you basically have to muddle through the program to gain familiarization with it. The TinySA app is a derivative from the parent application: NanoVNA-app, which has a lot more functions to support the VNA's. Also is the issue of the frequent firmware updates which generally don't have detailed explanations of the changes except as described in the rollout announcement messages from the group sites, and message queries from users? However, once relatively familiar with the programs use, it becomes second nature. It is useful to go through the wiki info and docs on the group sites, but much of the info is dated, and as the device FW is frequently updated, it's a chore to keep up.?

By the way, I noticed this morning a post on the NanoVNA site where a user had the same driver issue you did with DFU on his NanoVNA and found the same solution (bootloader vs ST Micro in DFU Mode) which fixed it with the correct selection. The driver interface is the same for either the TinySA or the NanoVNA.

....Ted (KD7AQO)

-----------------------------------------

From: "Terry Perdue"
To: [email protected]
Cc:
Sent: Friday August 27 2021 8:41:56AM
Subject: Re: [tinysa] Can't update firmware

Oh, cool! How would anyone know to right-click the grid? Is there a Help
file somewhere?

On 8/26/2021 10:24 PM, Ted Chesley wrote:
> Hi Terry, THX for the reply on the drivers, I remember I had to do that once. That info might help out someone with the same problem.
>
> As to the TinySA interface with the TinySA-app, when connected, clicking on the four arrows next to the freq setting will set the application to agree with the TinySA, the start/stop freq , data points etc, but not the grid. You have to right click on the grid and enter the desired MIN/MAX settings with the manual set. The auto set can be used when there is a waveform in the screen.
>
> Happy Hunting….Ted (KD7AQO)
>> On Aug 26, 2021, at 8:46 PM, Terry Perdue <K8tp@...> wrote:
>>
>> ?That’s precisely what I found out the hard way today.
>>> On Aug 26, 2021, at 8:11 PM, Jim Shorney <jshorney@...> wrote:
>>>
>>> ?
>>> The thing that seems to bite a lot of people is that the Tiny/Nano gadgets are different device when in DFU mode and need a different driver. When connected to the computer in DFU mode you should see a "STM Device in DFU Mode" device appear in your USB tree under Device Manager. This driver is part of the DfuSe_Demo package but is not installed automatically. You have to hunt it down in the DfuSe folders and install it manually if it is not showing up. I've been told that it is needed for the app to upload firmware but I can't say because I already had it installed before the app came around.
>>>
>>> 73
>>>
>>> -Jim
>>> NU0C
>>>
>>>> On Wed, 25 Aug 2021 20:45:07 -0700
>>>> "Terry Perdue" <K8tp@...> wrote:
>>>>
>>>> I'm not sure I understand that, but I should mention that I see that
>>>> when using the tinySA app, it /automatically /puts the device in DFU
>>>> mode. That works. But as you can see, it appears to be unable to 'open'
>>>> the device to write the file to it. I've tried many times.
>>>>
>>>>> On 8/25/2021 8:04 PM, Ted Chesley wrote:
>>>>> Hey Terry, also forgot to add: you must be connected to the TinySA app
>>>>> before you can use the upgrade. I think that's the case but I haven't
>>>>> tried it before connection.
>>>>>
>>>>> -----------------------------------------
>>>>>
>>>>> From: "Terry Perdue"
>>>>> To: [email protected]
>>>>> Cc:
>>>>> Sent: Wednesday August 25 2021 7:05:52PM
>>>>> Subject: Re: [tinysa] Can't update firmware
>>>>>
>>>>> ? I don’t see anything in the upgrade document about renaming any
>>>>> file. Can you elaborate?
>>>>>
>>>>>
>>>>>
>>>>>> On Aug 25, 2021, at 5:08 PM, Larry Acklin <acklin@...> wrote:
>>>>> ?
>>>>> I had the same issues. I used dfu-util, a bit of a PITA but
>>>>> figured it out. You need to follow the how to and also rename the
>>>>> file to what the batch file expects. It’s a DOS based process but
>>>>> mine is running latest and works- passes self test and Cal.
>>>>>
>>>>> And Windows 10 needed to recognize the tinySA as a usb device-
>>>>> running zadig helped get it recognized.
>>>>>
>>>>>
>>>>> Good Luck
>>>>> Larry
>>>>> KB3CUF
>>>>>
>>>>>>> On Wed, Aug 25, 2021 at 7:25 PM <K8tp@...> wrote:
>>>>>> I've downloaded dfusedemo, version 3.0.6. With it running, I
>>>>>> connect the TinySA and put it in DFU mode, but the application
>>>>>> doesn't find it. If it's any help, when I enter DFU mode I get
>>>>>> the 'USB disconnect' sound.
>>>>>>
>>>>>> I've viewed a couple of YouTube videos, and can't figure out
>>>>>> what I could be doing wrong. Also, if I click CHOOSE and
>>>>>> select the new .DFU file, the application reports that the
>>>>>> file doesn't have the correct format. Seems I have two
>>>>>> different issues.
>>>>>>
>>>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
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