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This doc relates to the below revision of hardware
Mecha Logo

Comet (rev5)

For Pilot users

The all new Mecha Comet

Better in all ways, the next revision of Mecha Comet, coming soon.

Flashing the Rootfs Image

Prerequisites​

  1. uuu tool on your host machine.
  2. Prepare the rootfs bundle: Make sure you have the following files available in the same folder as the flashing files on the host machine: - debian-v2.auto (this is the configuration file for the flashing process). - flash.bin (the flash binary file). - debian-image-rootfs.tar.gz (the root filesystem image to flash).
  3. Male to Male USB cable

Installing the Flash Utility​

The Mecha Comet relies on the uuu (Universal Update) utility provided by NXP for the IMX8M Mini processor. This utility is used for flashing firmware and root filesystem images to devices in fastboot mode.

Follow the steps below to install the uuu utility on your host machine.

Linux​

  1. If Running Ubutnu LTS / Debian

    Install the uuu utility using the following command:

    sudo apt-get install uuu

  2. Use Precompiled Binaries for any linux distro

    Download the precompiled binaries from the official GitHub page.

MacOS​

  1. Using home brew

    Install the uuu utility using the following command:

    brew install uuu

  2. Use Precompiled Binaries for mac

    For Intel Macs, download from the official GitHub page.

    For M1 Macs, download from the official GitHub page

Windows​

  1. Download exe from official GitHub page.

Now that you have uuu installed, lets start preparing the flash image.

Steps to Flash the Image Bundle​

1.Put the device into fastboot mode:​

Locate the switch provided on the back of your Mecha comet device and toggle it to enter fastboot mode.

mecha-comet-toggle-switch

2. Connect the device to your machine: Use a USB cable to connect the Mecha​

comet device to your host machine.

mecha-comet-male-cable.

3. Ensure the necessary files are in place: Make sure the rootfs bundle (debian-image-rootfs.tar.gz)​

and the debian-v2.auto file are in the same directory as the flashing files.

4. Flash the image: Run the following command on host machine to flash the device:​

bash sudo uuu -v -b debian-v2.auto flash.bin debian-image-rootfs.tar.gz This command uses the uuu utility to flash the flash.bin file and the root filesystem image (debian-image-rootfs.tar.gz) to the device in fastboot mode.

mecha-comet-flashing

Final Notes​

  • The flashing process will begin once the command is executed, and it will use the debian-v2.auto configuration file for the process.
  • Monitor the terminal output to ensure that the flashing completes successfully. If there are any errors during the flashing, they will be displayed in the terminal.