Hello,
I'm encountering some issue while trying to update the firmware on our Duet 3 Main Board 6HC.

Couple of weeks ago, the printer stopped working so i decided to update the firmware to the newest version.

I followed the procedure from the documentation Online regarding the Fallback Procedure #2.
The issue I encountered during the firmware repair process are the followings:

• I cannot connect the board to the PC, the only way I found to see the COM port on BOSSA is to keep the “Erease” pin connected, if I remove the jumper from the “Erease” connection or I press the reset button as shown in the procedure the board is not detectable from BOSSA.
• If I connect Bossa to the board, remove the jumper on Erease and try to flash the board, an error message warns me about the firmware locked on the board and BOSSA can’t unlock it.
• I tried to install SAM-BA from Microchip website but I can’t run it, if I try to run it a pop-up windows appears and disappear instantly.

Could you give me some information or possible solution on hot to fix this issue?

Thank you so much for your kind availability.