Flashing

The LAA arrives from the factory pre-flashed with the factory validation OS on the eMMC. In order to operate properly, each LAA should be flashed with the production OS on the NVMe.

The factory validation OS is able to automatically flash the production OS on NVMe as long as it’s able to download a file called torizon-docker-verdin-imx8mp.ota.tar.zst from http://laa-tezi.local.

If for some reason, flashing from network is impossible, you can reflash from scratch.

Network flashing

Network setup

Connect the LAA to the flashing network using the Main Eth ethernet port. By default, the LAA is expecting to get an IP from a dhcp server.

Flashing server

The flashing server should be reachable at http://laa-tezi.local in the flashing network.

Avahi server

Configure avahi-server to answer to laa-tezi.local.

In /etc/avahi/avahi-daemon.conf add:

[server]
host-name=laa-tezi

The restart avahi-daemon:

sudo systemctl restart avahi-daemon

HTTP server

Download the latest firmware to flash from baklava-manifest registry, extract it and serve it over http:

tar tf torizon-docker-verdin-imx8mp-Tezi.tar
cd torizon-docker-verdin-imx8mp-Tezi_1.0/
sudo python -m http.server 80

You can now check the http service works well with:

curl -o /dev/null http://laa-tezi.local/torizon-docker-verdin-imx8mp.ota.tar.zst

LAA flashing

You can now power-on the LAA. The factory validation OS will boot, detect the presence of the laa-tezi.local http server and start the flashing process.

During flashing, the OLED display will show progress of the process.

At the end of the flashing, the LAA will reboot to the prodution OS, ready to be registered.

Reflashing from scratch

Reflashing

If for some reason, flashing from network is impossible, you can reflash the LAA from scratch.

LAA SDCard

In order to reflash the LAA, a specific SDCard should be created with the disk image

SDCard size”

The SDCard should be larger than 1GB.

Partition

If the SDCard is available at /dev/sdb, you can automatically create the partition with fdisk:

echo "n\n\n\n\n\nw\n" | sudo fdisk /dev/sdb

Extract the content of the tar archive into the SDCard partition.

wget https://gitlab.com/api/v4/projects/43713736/packages/generic/firmware/v1.0/torizon-docker-verdin-imx8mp-Tezi.tar
mount /dev/sdb1 /media/data
tar xf torizon-docker-verdin-imx8mp-Tezi.tar --strip-components=1 -C /media/data
umount /media/data

Reflashing software

Download the recovery software and extract it.

wget https://gitlab.com/api/v4/projects/43713736/packages/generic/tezi/7.1.0-devel-202412+build.3/tezi.zip
unzip tezi.zip

Recovery

To reflash the LAA you should:

  • connect LAA USB OTG port to USB port

  • Insert the SDCard on the LAA

  • Enter recovery: hold down flash recovery, reset the board and release the button after 2s.

  • Load recovery software into memory

cd Verdin-iMX8MP_ToradexEasyInstaller_7.1.0-devel-202412+build.3/
./recovery-linux.sh

The recovery software will boot, flash the LAA OS on the NVMe and reboot. You can see the progress by connecting to the serial:

  • connect the LAA Con port to a USB port

  • launch sudo tio /dev/ttyUSB0