The prebuilt ConnectCore image includes support for the ConnectCore Cloud Services demo.

1. Establish a serial connection with your device

Open a serial connection with the device. You can use any serial terminal program such as Tera Term, Minicom, CoolTerm, or HyperTerminal.

PuTTY terminal program is not recommended due to an incompatibility with the USB/serial driver.

Open a serial connection with the following settings:

Parameter Value


Serial port where the device is connected

Baud rate


Data bits




Stop bits


Flow control


2. Download the firmware

3. Program the firmware

These instructions assume that the target U-Boot version is v2017.03-r11.1 or higher, where the fastboot command is available.

Digi recommends you use the Universal Update Utility (UUU) through a USB connection to your development PC to program the images.

  1. Decompress the zip file in a directory of your choice.

  1. Download the latest Universal Update Utility (UUU), a software tool from NXP.

    UUU version should be 1.5.11 or higher.
  2. Place the uuu executable in a directory in your PATH, such as /usr/bin.

  3. Install udev rules to allow any user to run uuu to access the USB port:

    $ sudo sh -c "uuu -udev >> /etc/udev/rules.d/70-uuu.rules"
    $ sudo udevadm control --reload
  1. Connect a micro USB cable to your development PC and the other end to the target USB OTG connector.

  2. Reset the device by pressing the reset button on the board and immediately press any key in the serial terminal to stop the auto-boot process. The U-Boot bootloader prompt displays:

    U-Boot dub-2017.03-r15.1 (Sep 20 2023 - 13:29:45 +0200)
    CPU:   Freescale i.MX6QP rev1.1 at 792MHz
    CPU:   Industrial temperature grade (-40C to 105C) at 38C
    Reset cause: POR
    I2C:   ready
    DRAM:  2 GiB
    MMC:   FSL_SDHC: 0, FSL_SDHC: 1
    In:    serial
    Out:   serial
    Err:   serial
    Model: Digi International ConnectCore 6 QuadPlus Single Board Computer.
    ConnectCore 6 Plus SOM variant 0x02: Industrial QuadPlus-core 1GHz, 8GB eMMC, 2GB DDR3, -40/+85C, Wireless, Bluetooth, Kinetis
    Board: ConnectCore 6 Plus SBC, version 3, ID 160
    Boot device: MMC4
    PMIC:  DA9063, Device: 0x61, Variant: 0x63, Customer: 0x00, Config: 0x90
    flash target is MMC:0
    Net:   FEC [PRIME]
    Fastboot: Normal
    Hit any key to stop autoboot:  0
    Information in the console log may vary.
  3. On the target, in U-Boot, execute the following command:

    => fastboot 0
  4. On your development PC, change to the directory where you extracted the ZIP file:

    $ cd <zip-folder>
  5. Program the image files:

    $ ./
  6. Once the firmware is installed, the device boots automatically. The default username is root with no password.

While the recommended boot method is eMMC, you can also boot the image from a microSD card using the *.sdcard image file on the downloaded ZIP file. See Boot from microSD card for instructions on programming a microSD card and booting from it.

You must use a microSD with a minimum capacity of 8 GB.