Flashing Guide for Ubuntu OS on I-Pi SMARC RB5

The Ubuntu OS is only for evaluation purposes(Internal use). If it is for commercial use, you need to get a license from Canonical. Canonical’s IP policy can be found here: https://ubuntu.com/embedding/faqs.

This document provides detailed information on flashing Ubuntu OS on the I-Pi SMARC RB5.

1. Prerequisites

To flash the OS on the I-Pi SMARC RB5, you need a Windows PC (Windows 10/Windows 11).
Download the prebuilt Ubuntu image files by clicking here.

1.1 Download and Install ADB and Fastboot drivers

1. Please download the ADB and Fastboot drivers and install them using the link provided below.

Note: If you encounter the “0 Files Copied Error,” download and install the “15_Second_ADB_Installer_v1.3.0” version, as the latest version might not be compatible with your computer’s Windows version.

1.2 Download the QPST Tool and QUALCOMM USB Driver to Flash the Image

1. Please download the driver below,

USB driver

2. When installing the USB driver, please select the setup type as ETHERNET-DHCP.

QPST TOOL

3. Please select Complete during installation as mentioned below.

4. After installing QPST, the Qualcomm Flash Image Loader (QFIL) Tool will be installed on your PC. Please open the QFIL Tool (Search bar -> Application -> QFIL).

2. How to Flash the Image

To initiate the flashing process for the Ubuntu image, it is essential to first transition the module into Emergency Download (EDL) mode. Once the module is in EDL mode, the Ubuntu image can be flashed using either Qualcomm Flash Image Loader (QFIL) or Android Debug Bridge (ADB).

2.1 Enter into EDL(Emergency Download) Mode

1. Micro USB.

2. Power jack.

3. UART Pins (See How to Read Console Output).

4. F_DL button (requires removal of the heatsink).

5. Follow these steps to enter into EDL mode.

6. Press the F_DL Key Button on the module

7. Hold the F_DL Key Button and power on the module by connecting the power cable.

8. Release the F_DL Key Button and connect the Micro USB cable.

2.2 Flashing on Module (QFIL)

1. The image being flashed contains the NON HIGH LEVEL OPERATING SYSTEM (NON-HLOS) firmware, boot-loader, kernel, and file-system.
2. Please use the QFIL Tool and follow the steps below.
3. Make sure image path is short in host PC from drive as below.

#windows_Drive:\LEC-RB5-8G--UBUNTU_20_04_xx\LEC-RB5-8G-NON-HLOS-UBUNTU_20_04-xx

4. Enter the module into Download mode (refer to section 2.0 for instructions).After LEC-RB5 Enters into EDL mode -> QFIL Tool will detect LEC-RB5 module as Qualcomm HS-USB QDLoader 9008.

5. Open QFIL Tool ,click Select Port and make sure that the COM port is detected.

6. Choose the Flat build option.

7. In ‘Configuration’ menu, select **‘FireHose Configuration’ **and edit the configuration as shown in the image below.

8. Go to the “Browse “ tab.

9. select prog_firehose_ddr.elf

10. Go to “LOAD XML” tab,select all .xml file.

11. Click download.The QFIL start will process and notify download succeed,Once completed

Attention: After the image flashed successfully, the target device automatically reset itself. Don’t turn off (or) Reset the target device manually. It causes the image packages to break, resulting in the inability to boot.

12. Now, wait for the Ubuntu terminal to show up on the target HDMI.

13. After this, you can only see the CLI(Command Line Interface). You can install the desktop based on your needs.

14. Login credentials are below,

**User:** adlink 

**Password:** adlink123

15. Once installation is completed, we have Ubuntu login on target HDMI. Proceed to log into the Ubuntu Wayland desktop as detailed in 2.3 Logging in to Wayland Desktop.

16. You also need to enable/restart the network manager. For instructions, refer to section 2.4, Enabling the network manager.

2.3 Flashing on Module (ADB)

You can skip this section if you prefer to update the entire image using the QFIL tool, as detailed in section 2.1
If you wish to update only the Bootloader, kernel, and Filesystem and not the NON-HLOS firmware, follow the steps below:

The image being flashed contains the kernel and file system.
Please use the ADB Tool and follow the steps below.

1. Image needed “qti-ubuntu-robotics-image-qrb5165-rb5-boot.img”, “qti-ubuntu-robotics-image-qrb5165-rb5-sysfs.ext4” and “abl.elf”.

2. Image can be found on the path :

FHD HDMI : /LEC-RB5-8G–UBUNTU_20_04_xx/LEC-RB5-8G-HLOS-UBUNTU_20_04_xx/LEC-RB5-8G-FHD-UBUNTU_20_04_xx/

4K HDMI :/LEC-RB5-8G–UBUNTU_20_04_xx/LLEC-RB5-8G-HLOS-UBUNTU_20_04_xx/LEC-RB5-8G-4K-BUNTU_20_04_xx/

3. Power on the Target board and connect the USB OTG/Micro USB between Target and the Host PC.

4. Open the command prompt.

5. Go to /LEC-RB5-8G–UBUNTU_20_04_xx/LEC-RB5-8G-HLOS-UBUNTU_20_04_xx/LEC-RB5-8G-FHD-UBUNTU_20_04_xx/ (for FHD).

6. Check that the target board (LEC-RB5) was detected using the command below.

$ cd /LEC-RB5-8G--UBUNTU_20_04_xx/LEC-RB5-8G-HLOS-  UBUNTU_20_04_xx/LEC-RB5-8G-FHD-UBUNTU_20_04_xx/
$ adb devices

Note: If the “#adb devices” command shows no device, please check your Device Manager for any yellow bang in the Qualcomm USB driver for troubleshooting. Refer section 2.6

7. Enter into ADB mode.

$ adb root
$ adb reboot bootloader

8. Check module detected.

$ fastboot devices

Note: If your device is not listed, please check the device manager for yellow bang and update the driver (refer to 2.2.1).

9. Enter into Fastboot mode.

$ fastboot flash boot_a qti-ubuntu-robotics-image-qrb5165-rb5-boot.img
$ fastboot flash boot_b qti-ubuntu-robotics-image-qrb5165-rb5-boot.img
$ fastboot flash system qti-ubuntu-robotics-image-qrb5165-rb5-  sysfs.ext4
$ fastboot flash abl_a abl.elf
$ fastboot flash abl_b abl.elf
$ fastboot reboot

2.4 Logging in to Wayland Desktop

1. After this, you can only see the CLI(Command Line Interface). You can install the desktop based on your needs.
2. Once the desktop is installed, you will see the desktop login page. Select “Ubuntu with Wayland“ and log in to the desktop using the following credentials:

User: adlink

Password: adlink123

Note: If the ‘Ubuntu with Wayland’ context menu item is not visible, please click on the user icon, and it should pop up.

2.5 Enabling the network manager

The network manager needs to be reinstalled after installing the desktop environment. To enable it, follow the below command on the RB5 Ubuntu desktop terminal.

$ su

$ echo "nameserver 8.8.8.8">>/etc/resolv.conf

$ apt reinstall wpasupplicant network-manager -y

2.6 Erasing image from Module

To erase the images on the module, follow the steps below.

1. Check LEC-RB5 detected on the host.

$ adb devices

2. Enter the module into ADB mode.

$ adb root
$ adb reboot bootloader

3. Check module detected on host.

$ fastboot devices

4. Run the below command to erase the kernel and filesystem.

$ fastboot erase system
$ fastboot erase boot_a
$ fastboot erase boot_b
$ fastboot reboot

2.7 Troubleshooting Qualcomm USB driver (yellow bang)

1. The driver may have to be manually selected and updated as detailed in the screenshots below.

2. Right click on Android select Update drivers.

3. The driver is already present in the system at this stage and should be available in the list as ‘Android ADB Interface’.

4. After updating driver,check adb devices in command prompt.

$ adb devices