Entering EDL Mode

Qualcomm EDL (Qualcomm Download Mode) is an emergency download mode for Qualcomm processor devices. It is mainly used for emergency repair, firmware flashing, or unlocking devices.

Entering EDL Mode

Before powering on the board, hold the EDL button. After powering on the board, release the EDL button to enter EDL mode.

1. Hold the EDL button

2. Connect a 20V Type-C power adapter (PD compatible)

3. Release the EDL button

4. Connect the Dragon Q8B USB-C port to a computer USB port using a USB Type-C cable

Verify EDL Mode

Windows

• Download the EDL driver

On Windows, go to the Resource Downloads page to download the EDL driver file.

• Install the EDL driver

Extract the downloaded driver file, then run Install.bat as administrator to install the driver.

• Device Recognition

In Windows, open Device Manager to check whether the device is recognized properly.

Linux

On Linux, use the lsusb command to check whether the device has entered EDL mode.

Linux$

lsusb

After the device enters EDL mode, output similar to the following is displayed:

Bus 001 Device 008: ID 05c6:9008 Qualcomm, Inc. Gobi Wireless Modem (EDL mode)