Vivo Nex A PD1-1806 Test Point | Vivo Nex A EDL Mode

Vivo Nex A PD1-1806 Test Point | Vivo Nex A EDL Mode

Vivo Nex A PD1-1806 Emergency Download Mode Qualcomm 9008 Com Port Driver.

How to Put a Qualcomm Phone into EDL Mode

Emergency Download (EDL) mode is a Qualcomm feature that can allow you to recover data from a device and perform tasks like unbricking or flashing the device. On supported devices, Magnet AXIOM can use EDL to extract a full image.

The method for putting a device into EDL mode can vary depending on the model. There are two ways to put a device into EDL mode and no single method works on all phones. On some devices you can use a special cable, while others might require you to disassemble the device. Finally, if the device is unlocked, you can use ADB to reboot the phone into EDL mode. Below you can find instructions for all two methods, so you can get comfortable performing them to make use of this acquisition method.

Option 1 – EDL Cable

Using a special cable to put the phone into EDL mode is probably the easiest method listed here. The cable is designed with a toggle switch to short out the correct data pin and force the phone into EDL mode.

Cable

You can buy these cables online for relatively cheap ($2-3 each from Hong Kong), you may have one already with another forensics kit, or if you have the time, you could make your own. There are plenty of instructions online how to turn a regular USB 2.0 cable into an EDL cable.

Once you have the cable, the workflow is straight forward. Just plug the cable into the computer, press and hold the toggle button and plug it into the phone. After releasing the toggle button, the phone should boot into EDL mode.

If you’re not sure the phone is in EDL mode, check Windows Device Manager for any Qualcomm devices listed under COM Ports which should confirm the device is in EDL mode and ready to go. Once the phone is in EDL mode, you’re free to continue with the acquisition in Magnet AXIOM. If it doesn’t go into EDL mode, it might be worth trying a few more times (often anything with mobile might require more than one try) and if you’re still having trouble, you may need to try another method.

Option 2 – Shorting JTAG Pins

If the cable method doesn’t work, another helpful method is to short out the CMD pin on the test ports to direct the device to boot into EDL mode. Not all devices have JTAG test ports, but if they do, this method works quite well. Below is an image of a Vivo Nex A PD1-1806 showing which two ports to short out (highlighted in yellow).