[LeEco Le Pro3 Guides, News, & Discussion] tsongming:
Below is the list that I was telling you about.

Although what you found may be all that you need to get your phone unbricked from all of the various posts. you may have ran into an issue that keeps you from being able to unbrick your phone.

If you continue to run into issues. I have prepared notes below that contain everything that I know of to help you unbrick your phone. I have personally spent many hours helping people unbrick their phones. Does it work for everyone? No, some people have hardware damage that cannot be repaired with these steps. for everyone else Follow the instructions below: if something fails, moves on down the list until you are unbricked.

This Thread dedicated to unbricking The Leeco variants X720 and X727

These instructions may not work if you flashed with wrong firmware, you installed the wrong recovery, or do not have a recovery at all.

Edit : Relevant info added on April 30 2018 :

See companion Links for additional files needed: 124

https://xdaforums.com/showpost.php?p=76106857&postcount=124

https://xdaforums.com/showpost.php?p=76170921&postcount=126

https://xdaforums.com/showpost.php?p=76251839&postcount=140

You will not see the port in Device manager unless you are in EDL mode

How to get into EDL Mode

Just press volume + and volume – buttons together while powering the phone on. It should now be EDL mode. If you cannot get into EDO mode, you cannot do anything else. If you get an error, press and hold the power button while at the same time hold vol up + and down simultaneously. You need to plug the usb cord into the back of the computer while holding the buttons.

Yes, It's a pain and a deep flash cable is handy....it's a special cable that will automatically put your phone into EDL mode.

https://www.amazon.com/cable-Qualco...coding=UTF8&psc=1&refRID=WJQAPHCY8H0SJRKYER3H

You will need to Install the Qualcomm QDLoader 9008 driver: https://goo.gl/9E3bKq or the from links I provided in my other posts through this unbricking forum. You can find the posts by using the search box above. Note: There are multiple versions or Qfil, some have issues. I posted the correct one that works. search for my post within this forum.

I found this video that you can use a companion tutorial to walk your through the steps visually. https://www.youtube.com/watch?v=iN9Ce3hKlRA

* While there are s a couple of differences. For example, The person in the video is flashing a different phone.Most of the steps are the same.

From Original Post: ( Links updated) https://xdaforums.com/le-pro3/how-to/guide-unbrick-le-pro3-tested-t3622340

1. Download Flash 2 (Tool) and Qfil here: https://androidfilehost.com/?w=files&flid=244213 ( Thank ito for posting these for you)

2. Make sure you place and run this file from the root of your PC I.E : C:/

3. Do not unzip, when selecting it needs to stay a zip file

4. Keep these files. In case you ever need them again and if it works for you.

Instructions

* QFIL mode: Press on vol+ and vol- simultaneously while holding power

* Alternate way to get into edit mode ( Press vol+ and vol- while plugging usb into pc. enter in edl mode.

* Then start Flash One 2.0

*

* Flash Type: Flash dead phone

* In Device Manager click Refresh, under ports you should now see your device "Qualcomm hs-usb qdloader 9008"

* To Flash Developer Rom: rename of rom to 1.zip, right click on file> go to properties> copy the path and paste the path into the Flash One window where its says "select file"

* next click the flash button, It will take about 10 to 15 minutes to decompress the file and start flashing

* If you get an error message: Put the phone back into EDL mode again ( pressing both volume buttons and power buttons) once again click the flash button again, remember do not unzip.

* Done, now you need to repair the partitions.

Addendum For if none of the above works:

Try removing and reinstalling Qualcomm drivers, turning off firewall and antivirus, reinstalling and rebooting? Sometimes the most basic steps are the solution.

Here is a link that might provide additional things to try:*http://www.androidbrick.com/unbrick-...usb_dload_edl/

Stock Rom and drivers can be found here:*https://devsjournal.com/download-let..._Pro_Stock_ROM

Here is a link to a Stock Rom that will not ask for a key and the drivers can be found here as well.*

https://devsjournal.com/download-letv-official-stock-rom.html

_____________________________________________________________________________________

Addendum 2 Resolving errors:

Re: Instructions for unbricking your phone

Okay so you were able to download the files but Windows is not recognizing the file.

It seems that Windows has damaged the file or Qfil installation.

1. Do you have more then one copy of the file? Here is an alternative copy:*https://androidfilehost.com/?w=files&flid=244213

2. You will need to uninstall and reinstall Qfil

If you are on Windows 10,

you may need to turn off antivirus, and all the block-ware that Microsoft has installed within Defender which may delete files or neuter files by removing some files.

Go through your settings and make sure under apps >>apps and features>> the dropdown box installing apps and turn off installing apps from store only.

Go to Apps & features in Settings.

Under “Installing apps,” there is a drop-down menu with three options: make sure “Allow apps from anywhere” is on.

Although the Qfil tool is used universally to repair all Qualcomm boards. Windows 10 may cause issue and disable functions that allow root level changes to your attached device. Yes, this will flag Windows Defender

Defender

* Open Windows Defender Security Center from your Start menu, desktop, or task-bar.

* Click on the App and browser control button on the left side of the window.

* Check Off in the Check apps and files section.

* Make sure that Defender and any other antivirus or malware blocker is turned off.

* Unfortunately, from now on you will always need to turn these things off if you are installing drivers or programs that did not come from Windows store.

* Make sure all defender settings are toggled off.

* Turn off the controlled folder access .

Worst case: Other potential ways to resolve

Enable developer mode : https://docs.microsoft.com/en-us/win...or-development

You can return everything back to normal after you unbrick your phone.

The link below explains how to resolve additional potential issues caused by the Microsoft OS,

https://flashfiletool.com

The full setup option, on this page will download all drivers ( download only if needed) its a list of software for all supported Leeco phones, with alternate repair tools. Ensure that any software downloaded matches the specs of your device.

Hopefully, this finally resolve it for you. I created a comprehensive list of instructions for every scenario Please let me know what works for you so we can post a set of instructions to help others with the same issue.

Finally, If I spend my time helping you unbrick your device, especially the people who message me privately. At least let me know that the steps, and I files worked. Most people do say thanks and that is awesome. But, I have helped so many people privately with unbricking their phones and never hear from them again until I see them popup in forums. Seriously, is it that hard to say thanks?