If you're familiar with Android programming, you might have come across the term 'EDL mode' at some point. EDL (Emergency Download) mode is a Qualcomm chipset specific mode that is used to unbrick a device, flash applications or firmware in the device, and it's widely used across a range of Android devices.
EDL mode is considered a last resort when flashing and other methods of repairing a bricked device have failed.
What is EDL mode?
As mentioned earlier, EDL mode is a Qualcomm chipset specific mode that enables a device to communicate with a computer in emergency situations when the device is not responding or has become bricked.
There are a few reasons why a device may get stuck in EDL mode. For example, if the bootloader has been corrupted, if the phone is not booting, or if the device is unable to communicate with a computer in fastboot mode.
EDL mode functions as an alternative to the standard bootloader mode which is used when a device is booting normally. The primary difference between the two is that EDL mode puts the device into Qualcomm's 'emergency download' mode, while bootloader mode is activated when the device is booting regularly.
How to Put an Android Device Into EDL Mode?
Before we dive into how to enter EDL mode, it's crucial to note that entering EDL mode is different on different devices. In this section, we'll discuss how to put your device into EDL mode for general Qualcomm devices.
You'll first need to download the Qualcomm USB driver to your computer to interact with the device in EDL mode. After that, follow the steps below:
Step 1: Install the Qualcomm driver on your computer.
Step 2: Power off the device.
Step 3: Connect the device to the computer.
Step 4: Locate the Qualcomm driver for the device and open up the device manager.
Step 5: Look for the Qualcomm HS-USB driver and right-click on it.
Step 6: Go to 'Update driver' > 'Browse my computer for driver software.'
Step 7: Install the Qualcomm driver
Step 8: Install the EDL driver
Step 9: Use an EDL tool suitable for your device. For example, MiFlash Tool or Qualcomm Flash Tool.
Note that some devices like the OnePlus 3/3T and the Xiaomi Mi Max 2 come with a direct EDL mode that can be accessed through hardware key combinations while the device is turned off.
Why Do You Need EDL Mode?
EDL mode can be a lifesaver when your device is not responding, and no other recovery methods are working. The EDL mode is often used to recover a device that's bricked or stuck in a boot loop.
In addition, EDL mode is used to flash custom ROMs and kernels, unbrick devices, update firmware and recover from software crashes. It's also used in device manufacturing to flash devices during production.
EDL mode is a useful tool that every Android power user should have in their arsenal. However, proceed with caution and only use it when necessary, as putting a device in EDL mode can be risky if you don't know what you're doing.
In conclusion, EDL mode is a vital tool for recovering a bricked device, and it's a useful tool for Android developers and enthusiasts. If you're unsure about how to use EDL mode, seek guidance from experts or consult reliable online resources.
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