Firmware update in SBC mode not working

benecito

I have a up to date image prepared with all my settings which I copy to my SD cards. Everything is running on 3.3 on the machine I took it from.
If I boot a new machine (exact same setup) the Firmware on the 3 mini is 3.2.2 (stock). After that I run

sudo apt update
sudo apt upgrade

which tells me everything is up to date, but if I check back on the firmware it is still 3.2.2.
For now I uploaded the Firmware by dropping the Duet2and3Firmware-3.3.zip into /sys using DWC but should it not work using

sudo apt update
sudo apt upgrade

I have 20+ machines coming up, and this simply means a few extra steps for each of them which I would like to avoid.

Shouldn't it work? What am I doing wrong?

jay_s_uk

@benecito The upgrade process using sudo apt, downloads the relevant files and then sends a trigger to the board to upgrade.
resending sudo apt won't upgrade the board because the current files are already there and the trigger won't get sent.
Use M997 instead

benecito

@jay_s_uk can I send the M997 command / trigger the update via ssh?

jay_s_uk

@benecito not that I know of.
you could add a file called runonce.g which contains M997. This file gets ran at first boot and then gets deleted.
or so you don't have to replace the runonce every time, you could add a macro and call it from config.g with the following contents

if boards[0].firmwareVersion != "3.3"
   M997

That checks the object model and will trigger an upgrade if the board firmware version isn't 3.3

benecito

@jay_s_uk I will try on the next printer! Not exactly what I had in mind but I guess it will do the job