EDL stands for Emergency Download Mode. This mode is like an emergency door to transfer the android operating system (stock ROM) from computer to EMMC via processor when your device is boot loop, hard brick, or dead boot. The EDL Mode feature is available on Qualcomm Snapdragon devices.

1.?Boot Into EDL Mode Using ADB Commands?

ADB (Android Debug Bridge) can be used if your device is on normally. Enable USB Debugging the device and connect to the computer. Once the computer is allowed to recognize the device, you can write commands for the device to enter EDL Mode. We need?Minimal ADB and Fastboot?software to write the commands.

1. Open?Settings???About phone.
2. Tap several times on the?MIUI Version?until the "You have developer option" message appears and then press?Back?button.
3. Press?Settings???Additional settings.
4. Select?Developer options.
5. Enable?USB Debugging?and?OEM unlocking.
6. Connect the device to the computer, if the message "Allow USB Debugging" appears on the phone screen click?OK.
7. Open the installation directory of the?Minimal ADB and Fastboot?on?C:\Program Files (x86)\Minimal ADB and Fastboot.
8. Press the Shift key and Right click and then select?Open command window here?to display the command prompt screen.
9. Type?adb reboot edl?and press Enter. Automatically the phone screen will dim as dead, it's a sign of your phone has gone into EDL Mode.

2.?Take Across From Fastboot?

Keep using the Minimum ADB and Fastboot tool but compared the first way we have to go into Fasboot Mode first and then to EDL Mode.

1. Turn off your phone.
2. Go to Fastboot by pressing Power and Volume Down buttons simultaneously until Xiaomi 'rabbit' image appears.
3. Connect the phone to the computer.
4. Open the Minimal ABD and Fastboot command prompt, the same way as for point 7 on the first method.
5. Type?fasboot oem edl?and automatically your phone will go to EDL Mode. If the command does not work, try?fastboot reboot-edl?or?fastboot reboot edl.

3.?Combination Buttons?

1. Turn off your phone.
2. Now plug one end of the USB Cable into the PC port and the other end does not connect to the phone.
3. Press the Volume Up and Power buttons and immediately connect the other end of USB Cable to the phone.
4. Automatically the phone will go to EDL Mode with LED lights will light up blinking.

4.?Deep Flash Cable?

You can buy this tool at an online store or build it yourself. Your Qualcomm cell phone will be forced into Qualcomm 9008 mode even if the bootloader is locked.

5.?PCB Test Points?

A surface-mounted test point is basically a small wire loop designed as an attachment point for test probes on a circuit board containing surface-mount components. It is relatively small, about the same size as a standard chip capacitor package.

The location of test points on each type of phone will vary depending on the type of PCB. On Qualcomm phones generally provided test points to force the device into emergency download mode (9008).