Why STM32L432KC shows "BAD STATE MACHINE IN FIRMWARE In dfu mode?

[swapnil champaneria]

stm32l432kc shows bad state machine in firmware when tries to upgrade code in dfu mode using the same code with the same file.

[swapnil champaneria]

Thanks for your reply @Community member​ ,

Here I attached a snap of device manager, Cube programmer and DFU-SE demo.

Thanks and Regards,

 Swapnil

[swapnil champaneria]

Thanks for your reply @Amel NASRI​ ,

My device has been detected as STLINK mode but not as DFU mode after before and after upgrading Cube programmer and Device firmware software. I attached a snap of my device firmware version hereby,

Thanks and Regards,

Swapnil

[Tesla DeLorean]

Any thoughts at ST as to why this isn't working properly? @Nawres GHARBI​ @brk​ 

[Houda GHABRI]

​Hello @swapnil champaneria​ ,

Sorry for the late repons.

Could you plz try with last version of STM32CubeProgrammer :2.1.0.

Tested for my side and it is OK.

Please  let me know if you still have the same issue.

regards,

Houda

[DWalk.1]

I know this is an old thread, but I'm having the same issue. I believe my problem is with USB signal integrity. In my case, I changed layers on the USB traces on a 4-layer board with a ground and power plane. The return path for the USB signals has to find the nearest bypass capacitor which is 0.25" away. I may also need to monkey with my trace width to get closer to 90 Ohms (Right now I'm at 100 Ohms).