Duet 3 + RRF3 : bad M999

steevebecker

Hi
I made a mistake : on the console I type "M999 S0" instead of "M997 S0" to update the firmware
From that time impossible to communicate with Duet3 ... few suggestions ?
msg:

M997 S0
Error: Code has been cancelled

M115 same result ...

M115
Error: Code has been cancelled

gtj0

M999 S0 should just reset the board and have it restart. What are the status of the LED between the SD card slot and the always-on fan header?

T3P3Tony

restart the duet&pi

steevebecker

The 4 bottom LEDs are lit and the one of the arrow at the top in the picture[DIAG] flashes very slightly

I turned off, waited 20sec and turned on the PI and Duet again (several times)

A little more info, during the boot:

1 - The arrow diode (DIAG) flashes normally during the boot of the Pi4 and the card

2 - Then starts flashing very weakly (at the same frequency) when the connection is established

08/11/2019, 18:50:13	 Connected to 192.168.0.152

3 - Then 15-20sec after that disconnects and it reconnects!

08/11/2019, 18:50:38	Connection established
08/11/2019, 18:50:31	Warning: Controller has been reset
08/11/2019, 18:50:31	Connection interrupted, attempting to reconnect...
Broken pipe

Dashboard is empty

gtj0

Flashing very lightly usually indicates that the firmware is corrupted. If it was on very lightly with no flashing it usually means the firmware was erased.

You're going to have to use "Fallback Procedure #3" in this guide to get it back...
https://duet3d.dozuki.com/Wiki/Installing_and_Updating_Firmware

steevebecker

I connected a USB cable to the Duet.

In the device manager the Duet appears like this during the boot of Duet 3

Then the device disappears

Trying to :

Reboot the PC (W8.1)
Changing USB cable
Trying one other PC (W8.1 too)
Installing Duet drivers from Windows update > fail
Installed Bossa > no port listed in Bossa

gtj0

Try erasing the firmware by jumpering the "Erase" pins in the middle of the board for a few seconds while it's powered on.

steevebecker

Erased the firmware
Uploaded RRF3 beta12 with Bossa

Perfect, everything works like before...

Thank you