On Sun, Mar 26, 2023 at 07:26 AM, allen KC2KLC wrote:
I think I'm in a similar situation to OP. When I connect my TinySA Ultra in DFU mode to my Windows 10 x64 desktop, I see "STM32 BOOTLOADER" under "Other devices" in the device manager but there's no driver assigned. I downloaded STTub30.sys from but when I try to update the STM32 BOOTLOADER driver by pointing to my download folder, it isn't recognized. As a result, when I execute "dfu-util -a 0 -s 0x08000000:leave -D tinySA.bin" per the instructions at I get a string of errors reading "Invalid DFU suffix signature / Cannot open the device at 0483:df11 / No capable DFU device available".
I can certainly live with my TinySA Ultra as-is, but it would be nice if updating the firmware were more straight-forward (I've done so far more easily with my other devices, like my NanoVNA). Any pointers on what I'm missing are genuinely appreciated.
? ?Did you see my earlier post at? /g/tinysa/message/10798? where I attached all the files and the procedure I used for installing TinySA-App and using it to update my TinySA Ultra to the latest firmware version on a Windows 10 PC.? I used the same procedure on a 2nd Windows 10 PC with the same successful results.
? Windows 10 automatically detected and installed the correct serial driver for the Ultra on both systems (I was connected to the Web so I'm not sure if found the driver locally or not).? I was able to run TinySA-App and use it to communicate with the TinySA Ultra after it was automatically detected by Windows 10.
? I was not able to update the TinySA Ultra firmware using TinySA-App until I installed the DFU driver manually as described in my post.? Both Windows 10 installations went smoothly, however they were clean installations where I hadn't tried any other methods of installing the serial and DFU drivers.
Herb
