yashsingh1/xdaforums huggingface dataset:
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] dr4stic:
No, windows should have nothing to do with it. I'm assembling a "return to US" rom as we speak... but I won't feel comfortable about releasing it until it's been tested. And also I need lunch...
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] HewettBR:
I'm going to use this method later today and can report back any issues. By the way, you are the man!

Is super super flash able after bootloader is unlocked?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] bulls4ever:
yeah .. windows wasn't the issue. I tested on Ubuntu and it was a no go.

Is it possible that LeEco released like 2 versions being the first a mistake of leaving the bootloader sort of unlocked and then a second with it locked?

I am running out of reasons for not being able to unlock it while some are able to
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] seffmono:
Choose wipe - then swipe to factory reset, when that is done - then format data
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Joms_US:
To document what just happened... Thank you so much, now I am at configuration of the phone!
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] seffmono:
You are welcome
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] starscalling:
so no hope for me eh
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] seffmono:
There is hope for you but you have to understand it well and apply it well. Are you on stock recovery or TWRP?... I am also thinking that your system file are already corrupted, in that case you will need to flash a fresh ROM first and let the phone boot up normally and from there you can get back to US ROM... Now I will advice that you go through this site... http://blog.grossoshop.net/leeco-x7... can bring back your phone to the US version.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Joms_US:
So I believe my phone still has the Stock Recovery because I've only executed "Fastboot boot recovery.img" My question is, will I still be able to update my phone with official stock ROM say 5.9 or 6.0 by renaming it to update.zip? And will my phone still receive OTA update? It has 5.8.020s just with unlocked bootloader and still unrooted. TIA
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] seffmono:
Yes you will still receive and take updates as long as your system is not rooted,still have the stock recovery and the system is not modified.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] WDS Josh:
how did you wipe your data exactly?

EDIT: nevermind, I got it
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] itsme_4ucz:
I think i did it using recovery
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] rumsey:
No. It simply does not work. I just received a X727 with 5.8.020s and attempted this, you cannot unlock the bootloader, even temporarily.

Debug is enabled, ADB is authorized and working, OEM unlock is enabled in debugging options, command gives error -

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot devices
ec699e9a fastboot

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot oem unlock-go
...
FAILED (remote: oem unlock is not allowed)
finished. total time: 0.024s

I see dozens of results for this error on Google, and no resolutions.

The closest I have found is your own post here, https://xdaforums.com/showpost.php?p=70633459&postcount=25

Are these instructions to resolve this error?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] suhridkhan:
I can confirm that it works. Did you try it yet?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] rumsey:
Yes, I've just tested your instructions and it worked fine. Thank you.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] HewettBR:
You have to push the Chinese files then you can unlock the BL
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] ultrasoul:
I was able to unlock the bootloader, flash twrp recovery after flashing/ upgrading to 5.8.019s ROM. However I'm having issues achieving root.

I was able to install SuperSU fine using TWRP. No errors are shown during SuperSU installation. SuperSU even shows up as an installed app once I boot up.

When Titanium backup request root access SuperSU asks for permission to grant or deny. However after being granted permission from Supersu, Titanium backup gives an error "Sorry I could not acquire root privileges. This application will not work. This attempt was made using the "su" command"

This doesn't make any sense at all- given that SuperSU installs just fine and everything looks like it rooted just fine.

What gives? Can someone else who has rooted their US 727 please chime in? I'm using SuperSU 2.79-SR3 version
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] csrow:
Check the root using a root checker app. It may be problem with the TB and not the root.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] ultrasoul:
Thanks you are right. Rootchecker says root is fine. I removed TB and downloaded the pro TB version instead and everything works fine now. Looking foward to debloating now :)
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] toanau:
I am still unable unlock the bootloader. I am to get the device to fastboot mode, however I unable to use the ome unlock command. I am supposed to use the other two command fist before the ome unlock command? I am currently on stock 21st build. Or do I use the other rout with Chinese ROM first
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] thesingh603:
This is a bit of misinformation, 20s version also can be unlocked by following the method that is on the development section. I have done it myself.

If you are having trouble unlocking 20s, do this.....

Go to the persistent bootloader unlock thread, download the bootloader files, unzip and run these commands

fastboot flash xbl xbl.elf

fastboot flash aboot emmc_appsboot.mbn

Then reboot and do the bootloader unlock command.

This is not my words. These are someone else's earlier in the thread
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] wpbear:
Does flashing emmc_appsboot.mbn change modem bands to chinese LTE bands?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Ascertion:
This is probably what you're looking for.

https://xdaforums.com/le-pro3/help/unlocking-bands-t3565979
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] wpbear:
No thanks though. I was attempting to ensure I wasn't modifying the bands when unlocking the bootloader. I want my USA bands to stay the same as stock.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] TheDethEgineer:
I managed to unlock the bootloader, but now I can nor acces fastboot mode to flash twrp, I tried using adb reboot fastboot and also turn on while pressing volume down :(

EDIT: Nevermind I was using the wrong command
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] wpbear:
This works on lastest USA update Stock (21s).

Have ADB/Fasboot tools on your computer

Make sure you have enabled the developer tools, turned on USB debugging, and authorized your computer on your device

Put emmc_appsboot.mbn from this zip (Download: x727-5.8.019s_bootloader-unlock.zip) in your adb directory on your PC

Put twrp.img from this zip (Download: TWRP) in your adb directory on your PC

On PC open admin CMD prompt

go into fastboot mode on phone (hold power and VOL -)

on PC type:

fastboot devices

fastboot flash aboot emmc_appsboot.mbn

after flash force reboot using Power button. It will ask for a password, just ignore it and reboot back to fastboot by forcing power down then reboot to fastboot (hold power and VOL -)

on PC type:

fastboot devices

fastboot oem unlock-go

fastboot flash recovery twrp.img

boot into twrp (force power down, then hold POWER and VOL +)

TWRP will boot, choose modify system. Choose wipe - then swipe to factory reset, when that is done - then advacned then format data

In TWRP ensure MTP is enabled. In Windows File Explorer the phone should be visibile. Drag and Drop your new ROM.zip, gapps.zip, SU.zip etc...

In TWRP INSTALL new ROM and other zips; choose wipe/dalvik/cache

Reboot System.

DONE!
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] ultrasoul:
Once you root and are on 19 how can you update to 21 without losing root and unlock since OTA is out of the question?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Kalkin19:
This worked for me! Thanks so much for the step by step, I couldn't for the life of me figure this out otherwise and I think I've been through 20 websites and followed dozens of instructions. Woohoo!
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] MrHarBear:
I still cannot get the adb to recognize my device in fastboot mode.

If it's in normal mode, I can get the device to show by typing in "adb devices".

However, if I am in fastboot mode (either by running "adb reboot bootloader" or manual buttons), "adb devices" will not show device.

FTW, I am also running 21s US version. Can you help? :/
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] TheDethEgineer:
Its because when you are in fastboot then the adb command will not work. You have to run "fastboot devices"
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] stragulus:
Hey, I can't get this to work; the download of the bootloader does not work as androidfilehost can't find a mirror. Anyone have a copy? Worked after trying to load it into an incognito window instead.

I couldn't get the MTP driver to work in windows, so instead I used adb sideload to flash:

In TWRP, go to advanced, and select adb sideload

On the PC: adb sideload <rom.zip>

If you also want to install the google apps, repeat the two steps but select the opengapps zip file instead.

Choose reboot once done.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] mrdodge:
Have same question as Ultrasoul... any way to update from 5.8.019s to 5.8.021s on x727 without losing root and unlock?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] abel408:
I have the same problem as you!!! DId you end up fixing it?

---------- Post added at 02:06 AM ---------- Previous post was at 02:02 AM ----------

Phone froze when I was flashing the persistant unlock. Now I can't get into recovery or system. Just a blink of the leeco logo and then it turns itself off. Only thing I can get into is the fastboot mode. It still has a locked bootloader and won't let me boot into system or a recovery. Am I screwed! HELP!
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Alvin4500:
my cmd says that cannot load emmc_appsboot.mbn when i type fastboot flash abot emmc_appsboot.mbn

PLZ HELP
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Kopavi:
PLEASE IGNORE I redownloaded the files and all is good.

When completing these steps from post 203 above:

fastboot flash recovery twrp.img

boot into twrp (force power down, then hold POWER and VOL +)

TWRP will boot,

TWRP doesn't boot for me it comes up with the Le Eco Recovery screen. Can anyone shed some light on what I did wrong?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Ascertion:
Try doing fastboot boot twrp.img when you're on bootloader. If bootloader is unlocked, it should let you boot straight into it.

If you are on 21s, you'll need to manually flash aboot. You can follow instructions on previous page.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] bwilliamspc:
Does any of this work on the current version? 021s?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] sweetboy02125:
Delete
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] sweetboy02125:
After rooting my phone with this method. My Google Play store didn't show me all my apps that i purchased anymore (I meant It shows all the apps but it asks me to buy it again)
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Alvin4500:
It is just that you must downgrade to Chinese version 19s using the local update.zip but that file is in another thread. I tried downgrading from 21s and it worked
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] ksou123:
I'd like to thank everyone who worked ok this. I was very close to buying a new phone just because I'm wary of being stuck on such an old ROM ( considering Leeco is done with America I don't think they'll bother with an update ).

Onward to Android 8.0 !
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] bob24260:
New Pro 3 Owner

I want to thank the OP dr4stic and bulls4ever.I appreciate the work y'all have done.I just got my Pro 3 today and when I got the dreaded remote failed message I was hot.I was on the verge of putting it back in the box and shipping it back.If I were a noob I might have but common sense prevailed and found my answer in bulls4ever method.Im now bootloader unlocked and rooted.I genuinely appreciate you both and look forward to seeing y'all around the forum.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] knives of ice:
EDIT - i figured it out i think
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Kopavi:
TWRP update and reinstall?

I am following the installation guide in post 203 above, I want to upgrade TWRP to 3.1.1 to have OTA updates. Do I need to follow the exact same process going through each step or is there a simple way to install the new version of TWRP? My limited understanding would be that TWRP is independent of the ROMs and that only TWRP needs to be reinstalled. Thanks for your help.

Think I found my own solution sorry.

Download the latest TWRP image file (.img) from the download link

Boot into the TWRP recovery. (To boot into recovery, hold on Power button + Volume down simultaneously )

Go to install and find and select the Images button. (At right-bottom)

Browse to the image that you downloaded and select it.

Choose recovery and swipe to flash.

You are done!
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] r3a1ist:
Mine is on 5.8.018S not 19s out of the box. Does it matter if I'm on an earlier version then outlined in the instructions?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Ascertion:
No. Instructions only change if you are on 21s or newer. You should be able to do this on 18s. If you want to play it safe, you can OTA the 19s update and then begin this process. :good:
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] r3a1ist:
Doesn't want to unlock. Guess its down the rabbit hole for me.

---------- Post added at 06:14 PM ---------- Previous post was at 06:11 PM ----------

Nevermind its unlocked I had to reboot the bootloader.

Unlocked, I can confirm that method works on 5.8.018s. Thanks.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] medjaisp:
Pls help! Stuck at password at both normal start and twrp

I tried exactly as you tried, now I am stuck at password, both at TWRP and normal boot. The version is marshmallow and 21s
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] wpbear:
TWRP will boot, choose modify system. Choose wipe - then swipe to factory reset, when that is done - then advacned then format data
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] yindingmin:
I press Power and Vol+ at the same time, it boot into LeEco recovery model. My version is 21s.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] gonax:
(First of all forgive me for my poor english)

Same happened to me. I just manually (console command) rebooted to recovery right after u flash the twrp. Here are the steps:

from what u said:

* Run "fastboot flash recovery twrp.img"

Then u force to boot the twrp

* Run "fastboot boot recovery_twrp.img"

// It will show a leeco message and then boot twrp.

(A brazilian guy have already recorded the way u should do it: utube/watch?v=_yzbtx6EgDY // Im new, can't post external link)

Regards!
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] dudeimstoked:
OP post worked perfectly for me. new x727, thx!
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Redhawk2000:
This helped me a month ago so thanks. I'm wondering if you or anyone can tell me as a noob if this would have anything to do with my phone doesn't work with VoLTE. I'm guessing it doesn't but I've been on two ROMs that support it but it doesn't work for me. Just curious.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] wpbear:
VOLTE is ROM dependent. Unlocking would not matter. Make sure enhanced LTE is turned on in settings in the ROM.

If you do happen to flash a no USA ROM and loose band 12 you can reflash the USA modem to get it back.

From another thread:

"To flash only the US modem to restore band 12 on any ROM:

Download: https://www.androidfilehost.com/?fid=601300970940399635

Extract the zip file and place it in your adb & fastboot folder.

From your abd & fastboot files folder (with the modem image in there too) open a command prompt and run

fastboot flash modem modem-5.8.019s.img

Then reboot your phone.

Keep this file handy because you'll need it every time you flash a ROM that doesn't have a US modem"
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] LargePrime:
has new Woot Pro 3. pc is linux

per this #203 I could update to 21, so I asked EUI to do that.

following guide adb devices gives no joy. triple checked and in recovery fastboot devices gives no joy

Pretty sure it is a phone issue. xda search says leeco has an at port block. need *#*#76937#*#* to open menu and enable.

That works. now adb devices works. if phone reboots, port is blocked. wat do? unblock, reverify adb devices. joy!

adb reboot bootloader

boots dual language recovery, JOY!

all following work.., so AT port did not close, as it will if you just reboot the phone.

fastboot devices

fastboot oem unlock-go

fastboot oem device-info

fastboot flash aboot emmc_appsboot.mbn

fastboot boot recovery_twrp.img

twrp boots. but at port still open! cannot mount data as I have no pass for factory encryption. no room for push. Do factory reset. 50 GB free. then am able to...

adb push lineageos.zip /sdcard/

push any other zip like LOS root or gapps

Flash LOS et. al.

boot LOS. start new user install till i get wifi, then backup and do the copy data from old phone path.

I think that is all correct. If not, I know I didn't use any other commands than these. I was expecting to follow a guide for idiots, and instead had to hack up this. My apologies for its roughness and thank all those who do real work.

Also the lineage wiki for this phone is cake. How fix?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Redhawk2000:
Thanks. I figured this process didn't have anything to do with my issue. I do have the enhanced LTE turned on but still no VoLTE. I've noticed the same issue in 2 different ROMs when others have it working. Not a big deal but just trying to figure it out.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] hunter99507:
Is there somewhere where I can download a stock flashable zip for the x727 for 19's in case of emergency?

Thank you
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] LargePrime:
Or the 21s? Good idea to have it handy
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] redspeed:
Im on 21s for the X727. Is there a way to unlock the bootloader, install the recovery and root without having to wipe the phone? I read a previous post on how to unlock the bootloader, however it mentions having a rom zip ready to install. For now Id just like to stay on 21s with root and recovery - is that possible, or was there a stock 21s rom out there? Sorry if this has been asked before I wasnt able to find it through search
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] orsonbear:
You may unlock, flash twrp and root even with the phone filled of apps! But backup the important datas, if any, before doing just one of these operations! Cheers!
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] owensri47:
i get an error when trying to flash emmc_appsboot.mbn

error: cannot load 'emmc_appsboot.mbn'

does anyone know the solution to this?

---------- Post added at 06:40 PM ---------- Previous post was at 06:35 PM ----------

did you ever find the solution to this? having the same problem.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] justwonder:
did your device list when you entered command fastboot devices?

I had to create adb_usb.ini in \.android to make Windows 10 to recognize my phone.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] owensri47:
when i type fastboot devices it outputs '3957f42 fastboot' i assume that is the device. when the device is not plugged in it doesn't output anything.

also, where do you access \.android?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] pokepud3:
I ended up not seeing the MTP on my pc, even while enabling it from TWRP, so I simply renamed the supersu zip, the lineage rom, as well as the gapps to simple names and sideloaded them with adb like so below.

To sideload go into TWRP and enable it in the bottom tab.

I used the following commands.

adb push gapps.zip /sdcard/

adb push lineage.zip /sdcard/

adb push gapps.zip /sdcard/

Then I went directly into twrp and flashed them all...
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] justwonder:
Your computer recognized your phone.

c:\Users\Your UserName here\.android

I assume you put emmc_appsboot.mbn in fastboot folder?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] owensri47:
moved the file into my user folder and it worked, but now i cant move files to the phone from my pc when running twrp. going to try the adb push command once my rom is done downloading =)

windows is simply seeing the phone as an MTP device and doesnt have a driver for it.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] motaku96:
It's still asking me for a password to format the data.

I can do factory reset, I can go into advanced and delete everything even system data. But it always asks me for a password for the format.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] DarkoMan25:
So I got this far, but when I forced reboot, I could not boot into fastboot. And every time I booted up, it would ask for a password. So I booted into LEECO recovery mode and restored to factory settings. Now when I flash aboot, I am not asked for a password and unlocking bootloader fails. Can anyone help?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] pokepud3:
When it reboots into the password just cancel out, go into the twrp recovery mode and clear cache/system/etc and flash the rom, gapps, supersu.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] DarkoMan25:
That's what I should have done, but I didn't. Because I factory reset, I am no longer asked for a password. Is there a way to check if I was successful in flashing aboot? And how do I get a successful on unlocking bootloader?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] pokepud3:
Well the only way for the password to show up is if you were successful in flashing aboot. Maybe try reflashing aboot again?
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] knguyen2715:
noobs get stuck

I'm noobs here.

I stuck here. try to power down the phone then hold power with vol - but it cannot go to fastboot. Don't know what to do next.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] DarkoMan25:
I was having the same problem. Try unplugging the phone from the computer and make sure to not let go of the volume down button when powering up. Let me know if you get it to boot into fastboot.
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] evlo:
I tried this on X722

C:\android\platform-tools>fastboot flash aboot c:\emmc_appsboot.mbn
target reported max download size of 536870912 bytes
sending 'aboot' (787 KB)...
OKAY [ 0.053s]
writing 'aboot'...
FAILED (remote: Critical partition flashing is not allowed)
finished. total time: 0.081s
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] Flounderist:
The file must be saved in the same folder of adb tool

---------- Post added at 08:52 PM ---------- Previous post was at 08:51 PM ----------

try command fastboot flashing unlock_critical

read at post 32

https://xdaforums.com/showpost.php?p=69640983&postcount=32
[LeEco Le Pro3 ROMs, Kernels, Recoveries, & Other D] knguyen2715:
Bro, I just find out we have to hold both of them for a while, wait for the device vibrate twice. It will go into fastboot. In the past, I just hold until my phone is vibrate, and it's just restart my phone. Hope it helps.