Attempting to install PanelDue firmware gives error

[Tortuga]

Error: Failed to communicate with PanelDue bootloader (no START signal received). Please try again or press the Erase and Reset switches on PanelDue.

Bossa doesn't connect at all to the Duet 3's serial port, and the PanelDue is unidentified in device manager. What can I do to fix this? I've been following the connection guide exactly for the Duet 3 6HC, but there's no information on this.

[Phaedrux]

@tortuga said in Attempting to install PanelDue firmware gives error:

Please try again or press the Erase and Reset switches on PanelDue.

Have you tried pressing erase and reset on the PanelDue?

What firmware version was on the PanelDue to begin with? To be able to update the PanelDue from the Duet, both must be at a minimum firmware version.

Manually flashing the PanelDue from your computer would be the next step.

https://docs.duet3d.com/en/User_manual/RepRapFirmware/Updating_PanelDue

Is your Duet3 otherwise working? It sounds like you're trying to update it as well? It's not really clear what you're trying to do.

[Tortuga]

@phaedrux I figured it out. The issue was that I was trying to install the firmware the way it's described in the documentation via Duet and USB, but having attempted to do so erased the previous, working firmware. I'm still not sure why it couldn't communicate with the bootloader, but I was able to fix this anyway by using bossac.exe to install the firmware instead of Bossa or installing the PanelDue firmware from the Duet 3. I'm not sure why bossac.exe was the only way to make it work, but it's back to normal. Worth noting as well that I'm an idiot and never needed to do this in the first place. I was doing it to try to fix a connection issue without realizing that the issue had nothing to do with firmware, and the PanelDue 7i ships with firmware installed that I accidentally erased. On the bright side, I know what to do in the future if I ever accidentally press the erase button.