# FAQs
How do you recover your device?

  1. Download the software.

  2. Force the device to emergency download (EDL) mode.

  3. Flash the downloaded software.

For detailed instructions, see Ubuntu, Windows, or macOS.

How do you flash the configuration data table (CDT)?

CDT is a set of platform-specific configuration files used during flashing to configure hardware parameters on the Dragonwing IQ-X EVK.

To perform CDT flashing:

  1. Download the IQ-X.1.4-EVK-CDT.tar.gz file from JFrog.

  2. Unzip the boot binaries.

  3. Put the device in EDL mode.

  4. Verify whether the device has entered EDL mode:

    $ lsusb
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    Sample output

    Bus 002 Device 014: ID 05c6:9008 Qualcomm, Inc. Gobi Wireless Modem (QDL mode)

  5. Navigate to the CDT workspace directory.

  6. Erase CDT

    <qdl_tool_path>/qdl --storage spinor xbl_s_devprg_ns.melf rawprogram0_WIPE_PARTITIONS.xml
<qdl_tool_path>/qdl --storage spinor xbl_s_devprg_ns.melf rawprogram0_BLANK_GPT.xml
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  7. Flash CDT:

    <qdl_tool_path>/qdl --storage spinor xbl_s_devprg_ns.melf rawprogram0.xml patch0.xml
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    Sample Output

    waiting for programmer...
flashed "cdt" successfully
flashed "recoveryinfo" successfully
flashed "PrimaryGPT" successfully
flashed "BackupGPT" successfully
11 patches applied
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How do you provision universal flash storage (UFS)?

UFS provisioning divides storage into logical unit numbers (LUNs) for better organization and performance.

To provision the UFS, do the following:

  1. Download the provision file:

    wget https://artifacts.codelinaro.org/ui/native/codelinaro-le/Qualcomm_Linux/X1E80100/provision.zip
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    unzip provision.zip
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  2. Provision UFS:

    <qdl_tool_path>/qdl --storage ufs xbl_s_devprg_ns.melf <Provision file>
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    Example

    <qdl_tool_path>/qdl --storage ufs xbl_s_devprg_ns.melf provision_default.xml
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    Sample output

    UFS provisioning succeeded

How do you install and connect to ADB?

ADB (Android Debug Bridge) enables communication with the device.

Enable ADB on the device

  1. Boot and log in.

  2. Enable USB debugging:

    touch /etc/usb-debugging-enabled
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  3. Start ADB:

    • Option 1: Reboot

    • Option 2:

      systemctl start android-tools-adbd
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Note

ADB persists across reboots.

Install ADB

  1. Install QUD

  2. Run:

    sudo apt install git android-tools-adb android-tools-fastboot wget
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  3. Verify:

    adb --version
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Sample output

Android Debug Bridge version 1.0.39

Connect

../../_images/top-view-iqx2-usb2port_ADB.png

  1. Connect device:

    adb devices
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  2. Start shell:

    adb shell
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How to put the device into EDL mode without DIP switches?

Run:

adb shell reboot edl
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How do you install the Qualcomm USB driver (QUD)?

Install QUD to detect the device.

  1. Clone repository:

    sudo apt install git
sudo git clone https://github.com/quic/quic-usb-drivers.git
cd quic-usb-drivers
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  2. Set permissions:

    sudo chmod +x QcDevDriver.sh
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  3. Install:

    sudo ./QcDevDriver.sh install
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  4. Verify:

    lsusb
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How do you troubleshoot flashing issues?

Note

Stop ModemManager before flashing.

If flashing fails:

  1. Power off device

  2. Disconnect device

  3. Restart host

## Further support Ask your questions on the [Qualcomm support forum](https://mysupport.qualcomm.com/supportforums/s/). Last Published: Jul 01, 2026 [Previous Topic Update the software](https://docs.qualcomm.com/bundle/publicresource/80-80023-261/topics/iqx-ug-update-the-sw.md) [Next Topic References](https://docs.qualcomm.com/bundle/publicresource/80-80023-261/topics/iqx-ug-references.md)