yashsingh1/xdaforums huggingface dataset:
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
I have not tried it, but according to the comments of this and other forums, with the 20S factory version it is easy to unlock by ADB, and it allows you to install twrp from x720 which by comment works fine.

The problem is that if you upgrade to version 26S, the bootloader can no longer be unlocked and as the recovery is changed to the stock, you can not reinstall Twrp or any other ROM (I suppose you can install another official ROM, but The only one that exists is the 26S, there is not even the 20S with which it comes from the factory)

In short, if you upgrade to version 26S, the bootloader is blocked, and you can not reinstall twrp or anything that is not official, and for the moment there is nothing more.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] ShynizZ.:
It's not like there are so many ROMs :p
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Flounderist:
The bootloader changes in 26s and it makes device bootloader locked.

I would suggest to stay on 20s until a workaround is available for unlocking bootloader also on 26s.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
I guess anyone who already has the 26S version will have to wait. But for the one who has a hard-brick with the blocked bootloader should try to get a copy of bootloader of 20S and with some flash tool try to change it.

Also it could be that with a flash tool install the rom 26S and before restarting change the bootloader by the 20S version. In some terminals, this has worked.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] DK Boneco:
I have a nandroid copy of 20S Shop ROM boot. I made nandroid copies of all major partitions (the same ones that have stock ROM) before installing 26S Stock. I used the TWRP of the X722 version to install the ROM. Everything worked. Then I installed the GApps and gave it some error and rebooted. Now I have the bootloader locked, it does not go into recovery mode and it does not start the system. Totally brick.

And the worst: QFIL does not work here. I have tested on different versions, different computers, different drivers and nothing. He always gives this error:

15:47:28: ERROR: function: rx_data:247 Error occurred while reading from COM port
15:47:28: ERROR: function: sahara_main:924 Sahara protocol error
15:47:28: ERROR: function: main:303 Uploading Image using Sahara protocol failed
Download Fail:Sahara Fail:QSaharaServer Fail:Process fail

And Windows emits the disconnected device sound.

Here is a detailed log using the command to send the FireHose through the CMD:

Log.txt
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] DK Boneco:
Does anyone have any idea what this error is? And how to solve it?
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Hello DK Boneco, I can not tell you how to solve it, but I can give you an idea.

The fault is because the bootloader is locked.

Look for another tool that does not use qfil and that allows you to flash with locked bootloader. Surely there must be some.

And by the way, if you have a copy of the complete 20S version, I would try to flash this one.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] ziaba:
Can you please post a link
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Hi, this thread talks about "unlock bootloader with rom 26S" not from twrp.

Anyway there is no twrp for x722 but it works for x720.

Query in twrp threads or create one in section x722 for more information.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] DK Boneco:
A friend who has the same smartphone with unlocked bootloader did the same process and the exact same error happened.

Do you know another method? All that I looked for, ending up using the background QFIL to get the job done.

---------- Post added at 12:34 AM ---------- Previous post was at 12:33 AM ----------

Here's the link: https://twrp.me/devices/leecolepro3.html
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Flounderist:
The hard brick came from gapps on top of 26s. Never flash Gapps on top of stock ROMs. Never.

The 26s firmware locked bootloader blocking the CRITICAL partition, so you must unlock it first, then unlock the bootloader.

Try this sequence, in fastboot mode:

fastboot devices

fastboot device info

- when in fastboot device info, check CRITICAL partition unlock status. if FALSE, then try

fastboot flashing unlock_critical

fastboot device info

- now CRITICAL partition unlock status should be TRUE, try unlocking

fastboot oem unlock-go

- if you succeded unlocking, check status with

fastboot device info

fastboot reboot or fastboot flash recovery twrp.img

- if you still cannot unlock, you could try flashing a different emmc_appsboot.mbn file. You can extract emmc_appsboot.mbn from x722 20s firmware or from x720 firmware.

In fastboot mode

fastboot flash aboot emmc_appsboot.mbn

- if flashing is successful

fastboot reboot

adb devices

adb reboot bootloader

fastboot oem unlock-go

- if unlock is succesful

fastboot device info

fastboot reboot or fastboot flash recovery twrp.img
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] DK Boneco:
I tried this and several other ways to try to unlock the bootloader. I could not find a way. It does not allow flash any partition.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Flounderist:
Would you try

fastboot format userdata

fastboot format data

fastboot reboot bootloader

fastboot device info

Check if (bootloader) is_allow_unlock: changed from 0 to 1. If it is still on 0 try

fastboot erase userdata

fastboot erase data

fastboot reboot bootloader

fastboot device info

If still on 0....try also formatting or erasing cache.

It seems that kernel does not allow any tampering attempt if value is =0, hence critical partitions are locked.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Hello DK Boneco, the error is reading the COM port.

Is the phone charged?

It appears that the phone is disconnected or exits EDL mode.

It may be a driver problem, or some phones exit EDL mode within a few seconds if the flash has not started.

Try not to take more than 4 or 5 seconds from the time the phone enters EDL until the flash starts.

You can also try the flash with MiFlash Xiaomi, say that can flash any modern phone and is quite effective, look for a manual and test.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] kotsoss:
You may need to install drivers to your pc to recognize your, thats why it emits the disconnected device sound.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Hello DK Boneco, try these steps:

1. Method published with flashone2.0 and zip qfil.

2. When the fault appears, disconnect the USB phone.

3. Reconnect the phone in EDL mode (vol + and vol- and connect to USB)

4. Without losing time, in flashone2.0 press the "Refresh" button, select the COM port, press the "Flash" button and then "NO" (do not unzip it again).

From connecting the phone to USB until you press the "NO" button as fast as possible, without wasting time.

I hope it serves as something, what I see is that the phone goes out of EDL mode and that's why it fails.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Flounderist:
To be sure to stay in EDL mode, you can type

fastboot reboot edl or fastboot reboot-edl

Be sure to install Qualcomm driver properly on PC.

Anyway it seems that QFIL is missing for X722 device. I assume that this device lacked a lot of development due to company failure, or it was developed exclusively for CN market (no google play support and locked bootloader from kernel to avoid any hacking activity).
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Qfil is a Qualcomm tool for any Qualcomm smartphone, no matter brand or development.

Qfil should work for any phone with chip qualcomm, another thing is that the phone requires some specific configuration, or that the zip that is intended to flash is not correct.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] evlo:
But you need qfil file for your phone it does not work like there is one universal for sd820 published by qualcomm

For the time being there is no qfil for x722 and also no other official published firmware then 26s.

Afaik noone even published their backup of 20s partitions.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
It is not clear that the qfil zip is the problem.

It does not even start the flash, it seems like hardware, configuration or driver problem.

In leeco lemax2 with sd 820 and its qfil zip if it works.

Equally between the x720 and x722 there is some hardware difference (apart from the processor) that we do not know, and causes that incompatibility.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Flounderist:
Are you keeping firmware folder (uncompressed) in the same folder where QFIL is stored (eg QPST\bin)?
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Let's see, I've tried the EDL mode on my x722 phone which is not locked and works perfectly.

To enter EDL mode:

Press vol + and vol- and plug in USB to the PC without releasing. DO NOT PRESS IGNITION, ONLY VOL + AND VOL-

The PC makes a sound when it detects it, and in the device manager in COM ports a port "Qualcomm HS-USB QDLoader 9008 (COMXX)" appears where X is a number. If it appears it means that the phone is in EDL mode and that the PC has detected it.

The phone does not seem to go out alone this way. Even unplug from USB and plug it in again and it is still in EDL mode.

To exit EDL mode:

In terminals with brick I do not know, but in terminals without problems we pressed on, and in less than 10 seconds it vibrates and ignites normally.

I do not know if to turn off a locked terminal you have to press it on to turn it off, but it sure exits the EDL mode.

I can not taste more.

Greetings.

P.S. My english is of translator :)
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Flounderist:
Most of the guides stated to press Power and vol + and - :silly: and lots of people had trouble :silly:
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
If I press all three, the phone turns on and does not enter EDL.

If I press vol + and vol- it does nothing until I plug in USB. Then he goes to EDL mode.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] DK Boneco:
My English is also of translator. I am Brazilian. But I'll try to answer everything.

I demand to a friend of a Facebook group that also has a Le Pro3 Elite to do the same procedure that I'm doing in QFIL to test if the problem is just me.

Even his smartphone was in perfect working order, the same error occurred.

So I think the connection problem is not because the smartphone is brick.

---------- Post added at 11:56 PM ---------- Previous post was at 11:55 PM ----------

The bootloader is locked and format and erase commands do not work. Not even the boot command (initiates a recovery without flash) works.

---------- Post added 19th August 2017 at 12:01 AM ---------- Previous post was 18th August 2017 at 11:56 PM ----------

Yes, I already tested with the fully charged battery.

Windows only emits disconnected device sound. It is still connected as Qualcomm HS-USB QDLoader 9008 (COMX). So much so that if I try to do the same procedure immediately after the sound emitted by Windows, the same thing will happen. The curious thing is that in the fifth attempt in sequence, the error is a little different: there is no sound issued Windows, it takes a lot of time and the error is as follows:

19:27:01: INFO: function: sahara_rx_data:232 Read 0 bytes, Header indicates command 18 and packet length 32 bytes

19:27:01: ERROR: function: sahara_rx_data:237 Unable to read packet header. Only read 0 bytes.

19:27:01: ERROR: function: sahara_main:924 Sahara protocol error

19:27:01: ERROR: function: main:303 Uploading Image using Sahara protocol failed

I've tried with several different versions of the Qualcomm drivers. Currently I have the newest version, 2.1.2.2. I've also tried with manufacturer drivers, which are modifications of the original from Qualcomm. Always with the same error...

I have also tried with MiFlash Xiaomi and there is also a connection error. I also tried ZTE Tool Studio and there is also a connection error.

I tried with FlashTools 1.9 and 2.01 and same errors. FlashTools uses QFIL to do the work in the background. So it's the same result using QFIL or FlashTools.

---------- Post added at 12:02 AM ---------- Previous post was at 12:01 AM ----------

This command is not from fastboot. He's from ADB. And you can not use ADB in bootloader.

---------- Post added at 12:03 AM ---------- Previous post was at 12:02 AM ----------

Only the correct FireHose (in my case prog_ufs_firehose_8996_ddr.elf or prog_ufs_firehose_8996_lite.elf) is required for QFIL to make the connection.

And as I said, before installing the stock ROM, I made a backup of all major partitions (boot, aboot, modem, recovery, system etc.) of the Shop ROM 020S.

This is not the problem.

---------- Post added at 12:04 AM ---------- Previous post was at 12:03 AM ----------

Yes, I have already tested the files in the QFIL folder. But that's not the problem either.

AND THANK YOU VERY MUCH FOR THE HELP!!
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] DK Boneco:
I don't understand. With me and Facebook friend, the same error ocorred and with you it works.

I'll try to get into QDLoader without the Power button.

I have an idea to try to understand this better:

qsaharaserver -v 2 -u 3 -s 13:prog_ufs_firehose_8996_ddr.elf

Can you test to load FireHose with this command via CMD?

This command with the "-v 2" argument provides much more data about the connection than QFIL. It uses QSaharaServer.exe to load.

This will do nothing with your smartphone, it will just load FireHose into RAM.

"-u 3" indicates COM port. In case you were trying to be 3. If yours is another just replace the "3".

If you do not have FireHose you can use this one that I attached.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Flounderist:
:crying:
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Weekend without time but I have something in mind.

I comment after weekend
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Hello, I need someone who has flashed with qfil, try again, changing an option.

And let me know if it works.

Better do it directly with qfil.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] evlo:
There is no qfil for x722 AFAIK. I even asked LeEco, but they did not provide me with any.

There is only 26s firmware files on chinesse leeco site, no other firmware was released (AFAIK).

26s does not have bootloader unlockable in any standard fashion =

option in developer options does not work this in my opinion is a bug

fastboot oem unlock does not work

fastboot oem unlock-go does not work

fastboot oem unlock_go does not work

fastboot unlock_critical does not work

flahsing "magic unlock" boot partition images from x720/x727 does not work (i guess you would need correct aboot partition image for x722 and maybe even that would not work)

noone published image backup files of x722 20s firmware that it ships with.

It is possible to flash firmware using update.zip in root of the "sdcard" using official recovery tool, but official firmware uses proprietal verification, currently it is publicly unknown how to modify official update process.

it is pointless to repeat same steps over and over again

TWRP for x720/x727 works, but as currently, you are not able to flash twrp on the phone, as it's bootloader is impossible to unlock (for 26s)

Also, "magical fix solutions" like this one http://bbs.zol.com.cn/sjbbs/d34651_1201.html (linked on croatian telekinezia and leeco.re sites) are pointless, as they require unlocked bootloader to work :)

I really don't understand what qfil you are trying to flash, the x720/x727 one?
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Even the link that you have posted says that it works for x722, I do not know why it asks what I want to flash, there is only one.

Obviously it is useless to try again and again the same, but it is not useless to try different options, but if you have tried qfil with all possible options, could have said it, and we stop wasting time trying to find a solution.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] evlo:
I don't understand you at all, are you trying to modify x720/x727 "qfil" to work on x722?
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
I do not understand it at all.

Are you trying to help or entangle?

What I want:

Https://xdaforums.com/showpost.php?p=73475269&postcount=31

I do not know if it's a communication problem through a translator, I think it's understandable, but I'll detail it:

Qualcomm qfil program

Zip le_zl1_qfil_ufs.zip

Change an option to the qfil and flash program.

If you do not understand, I can not help you.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] robboman88:
So, I really messed up. Bought the Le pro 3 from banggood, came with shop rom. So I was thinking custom roms are not possible on the x722, so let's just install the latest stock rom (x26). Phone had unlocked bootloader, installed twrp. Then flashed x26 rom + Gapps (woops..).

Now The phone does not boot. I can't acces recovery because bootloader is locked now. I can only acces fastboot. I found no way to unlock bootloader so I can't flash any new rom or anything. I am basically screwed right? Anything I can try? I
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Flounderist:
Never flash gapps on top of stock ROM

Never.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] ajoesmith:
so i have just bought this, havent update as everyone says that latest 26s has locked bootloader.

What do i need to do to make a backup of current 20s so that i can upload for some people to work magic???
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Flounderist:
https://xdaforums.com/showthread.php?t=2450045
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] robboman88:
Yea learned that the hard way, I payed the price.

It would be awesome if u could do that!
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Test:

fastboot -i 0x2a96 oem unlock
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Batyan:
Original recovery is very necessary for me. Can you make a copy of it? :)
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] jppt13:
for me too :)
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] robboman88:
Tried this, results into: Failed: Remote eom unlock is not allowed.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] mick_novi:
Unfortunately, I am also one of the "smart ones" that flashed 26s when I got the phone. I then installed gapps, and fortunately, I didn't try to flash twrp (which seems to result in hard bricking of the device).

I am still hoping that one day we will be able to unlock the bootloader, install Lineage OS, and enjoy the full potential of the device. At this moment, this seems unlikely, as LeEco is basically bankrupt..
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Flounderist:
Flashing twrp would simply fail due to locked bootloader. It does not lead to hard brick. Usually flashing gapps should lead to it. Did you booted your device after flashing gapps?

P.s. afaik there is no LOS for x722.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] sk8223:
I heard the bootloader prevents unlocks on eMUI 5.9??? Sheesh. ?
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Batyan:
The stock 20S firmware for X722

Archive consists of update.zip and firmware for flashing via fastboot.

From Russia and China with love.

Enjoy.

Download

P.S. It is may too late for people with hard brick, but you can try
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] mick_novi:
Yes, I flashed gapps without any issues. My phone works just fine, it is my primary device.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] robboman88:
Thanks for posting this! I can't use it because the bootloader is locked, but I'm sure it can be of use to some people.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Good news.

Those who have the 26S could try to update from the terminal itself update.zip

The ROM version is WIXCNFN5800106140D

The final D I think is ROM developer
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] ste73:
can you download the original rom WIXCNFN580200132S?
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
You have not read the thread?

If you find a link to WIXCNFN580200132S post it here.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] ste73:
I do not have to put it in. I'm looking for it.

after 26 s I installed the F.J.V rom on my 722.this stock recovery.have done the process to root the 722 through the twrp of the 720 it went all wonderful.Grazie:good:
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
It's not my ROM. [MENTION=7831038]Batyan[/MENTION] posted it.

Thanks for trying. It is confirmed that 26S BOOTLOADER CAN BE UNLOCKED, or at least that ROM can be changed.

If you can try to see if with the new ROM the bootloader is unlocked.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Well, I suppose if you have installed twrp and you have rooted the bootloader, IT IS UNLOCKED.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] jppt13:
Is someone can explain how to use it? (i'm on 26s with BL locked)

Thx
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] Batyan:
Have you got a hard brick, or device is bootable?

Now discussion of 20S rom is here

https://xdaforums.com/le-pro3/leeco...ent--and-mods/stock-eui-5-8-20s-x722-t3680624
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
The bootloader problems with 26S are still in this thread.

The ROM that you have published serves as a moment to leave the 26S, like any other ROM that is official. As I said if it is official can be used as an update, what happens is that at the moment it is the only one that has been published other than 26S.

The ROM you posted is NOT the 20S, it is a developer ROM, but at the moment it serves to exit the 26S, because there is no other. But the terminal with 26S must be bootable, if it is brick can not be

You still can not unlock 26S bootloader, just exit 26S bootable with an official ROM.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] jppt13:
My device is bootable

My device is bootable.

I've installed TWRP when i was in 20s (original ROM when i received my X722) and i made a full backup of my phone with TWRP. I've installed the 26s and now i can't install TWRP because of the BL locked. I still have the TWRP folder on my phone (with my backup) but i can't restaure it (maybe someone know how to restaure a full TWRP backup without TWRP installed... :)).

I want install the 20s to unlock the BL and install TWRP to restaure my original backup.

Thank you
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
Install the update.zip of the new ROM from the recovery stock, or copy the update.zip to the terminal, select it and give it to update.

The new ROM does not have the bootloader locked. Install TWRP and restore your backup.

Discuss the results.

Greetings.
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] ste73:
this morning I installed the 26 s with twrp now i have a phone that enters the bootloader, in edl, and starts up to the leeco screen.in recovery mode does not want to know how to enter. help
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
I do not understand. Write more clearly.

I have to use a translator.

Can you use ADB or fastboot?

Enter into recovery stock?
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] ste73:
fastboot yes

recovery not

adb = /system/bin/sh:

https://imageshack.com/i/pmcp0XH0j

https://imageshack.com/i/pozLgDWDj
[LeEco Le Pro3 Elite (Model x722) Guides, Developme] F.J.V:
1. I think TWRP of 720 causes brick. Do not use it

2. Start the phone in fastboot.

3. Go to Batyan ROM folder and double click on 第二步多刷_音量下键+开机键.bat

4. Comment results