Database Users

New method to downgrade and root 183.46.15version of kitkat4.4.2 (for XT926 UNLOCKED)

This METHOD was developed ONLY for an UNLOCKED Motorola Droid Razr Maxx HD XT926m phone that is already updated to the last version of KitKat 4.4.2 (System version "183.46.15.XT926.Verizon.en.US").
IF YOU HAVE AN LOCKED BOOTLOADER AND TRY THIS METHOD IT WILL BE ONLY YOUR RESPONSABILITY IF YOU DAMAGE YOUR PHONE !!!
My Motorola XT926m had an UNLOCKED BOOTLOADER (ICS 4.0.4) and I flashed via RSD Lite the last stock firmware, "183.46.15"... After that, I was, of course, unhappy, because I read on different forums that this firmware version didn't support root... I tried to download the Hydrogen Peroxide xt926 application that others users recommended here on XDA forum, without success.
But now, after I applied this method, my phone is again rooted... Enjoy the steps, but be carefull, it was developed for XT926 phones with UNLOCKED BOOTLOADER!
1. Download the files "VZW_XT926_4.4.2-KDA20.62-10.1_CFC_1FF.xml" and "VZW_XT926_4.4.2-KDA20.62-15.1_CFC_1FF.xml" from the Motorola firmware site: "motofirmware.com/files/file/"...
2. Unpack the files...
3. Substitute/replace the "gpt", "tz" files (FROM the folder with "15.1" version TO the folder with "10.1" version)... You should replace all the files that "RSD Lite" will tell you that don't fit when you try to flash the new stock firmware. You will obtain a MODIFIED version of "183.46.10" stock KitKAt 4.4.2 firmware!!!
4. Flash this MODIFIED "10.1" firmware with "RSD Lite v6.1.5 Multi-Flash" (without using Rsd Script Generator.jar), but don't forget to remove the first two 'getvar' lines in the xml file.
5. Download and install the "Towel Root.apk" and root the phone...
6. Now your phone should be ROOTED.
What to do NEXT:
7.Download from the Play Store and install "Superuser.apk" made by ClockWordMode and after reboot the application will ask you to update SU binary. In my case, the SU binary didn't support an online update and I installed the "Superuser.zip" file downloaded from the ClockWorkMode site, via recovery method, in order to gain this update (you can do this as well, if you already have a TWRP or CWM recovery installed on your phone). With the other version of superuser, like "SuperSU.apk" or "Superuser.apk" ("eu.chainfire.supersu-2.apk", the last version, 5.6mb, for example) you will need to follow the same steps...
8. Using "Total Commander.apk", you can go to "File System root"/"Etc"/"installrecovery.sh", and finally rename this last file... Or you can use "ES3 File Explorer.apk" in order to rename the same "installrecovery.sh" file in "Device"/"Etc" folder (choose, for example, the name "installrecovery.shbak")...
9. Flash with "Flashify.apk" (downloaded form PLay Store) a new "recovery img.": "TWRP.img" (2.8.3.0) or "CWM.img" (6.0.4.8) for KitKat... You can find them on "rootjunkysdl.com/?device=Droid%20Razr%20HD&folder=Firmware"...
10. If you flashed "TWPR recovery.img" you will need to install "Stericson.busybox-1.apk" (from Play Store...), because TWRP works with this busy box... (You could install "TWRP.apk" as well, but you must be careful, because you will need to be able to boot into Recovery mode directly from your phone (with the combination key), not from this app... Many times, the phone is able to boot into recovery mode from TWRP application, but not from the bootloader... That's why it is better to uninstall TWRP application if you have this problem). If you flashed a "CWM.img" you can install "RomManager.apk".
11.Now it is the time to backup your system to SD card!
That's it. My phone was unlocked, and I didn't have any issue following all this steps... If you're locked don't try it.
But.. If you're locked you could instead use an application named 'Safestrap' for some purposes (read more here on XDA forum please), because is destinated for the phones with locked bootloader...

Hi ,
Since this is a guide it does not belong to XDA Assist
Please Read The Purpose of XDA Assist
Please Standby when Moderators Move the Thread To Your Device Specific Forum
RAZR HD General

jackeagle said:
Hi ,
Since this is a guide it does not belong to XDA Assist
Please Read The Purpose of XDA Assist
Please Standby when Moderators Move the Thread To Your Device Specific Forum
RAZR HD General
Click to expand...
Click to collapse
THANKS!

I know you took a lot of time to write this up, but there is a downgrade method posted on here already. Also, there is no need to rename recovery.sh. All you need to do after flashing recovery is power off the phone and immediately boot straight back into recovery so the install script completes.
To answer your question, no, you can't unlock .15.

RikRong said:
I know you took a lot of time to write this up, but there is a downgrade method posted on here already. Also, there is no need to rename recovery.sh. All you need to do after flashing recovery is power off the phone and immediately boot straight back into recovery so the install script completes.
To answer your question, no, you can't unlock .15.
Click to expand...
Click to collapse
Thank you, I wasn't able to find another downgrade method, could you give me the link, please?

http://forum.xda-developers.com/showthread.php?t=2789743

But... to flash CWM or TWRP for update the binaries, you need to be bootloader unlocked... to flash a custom recovery...

joel_sinbad said:
But... to flash CWM or TWRP for update the binaries, you need to be bootloader unlocked... to flash a custom recovery...
Click to expand...
Click to collapse
Correct. That's why this method is flawed and probably should be pulled before someone bricks their phone.

RikRong said:
Correct. That's why this method is flawed and probably should be pulled before someone bricks their phone.
Click to expand...
Click to collapse
Yeah, unfortunately this post makes no sense, I mean, if you accidently flash the gpt.bin, you're screwed... and so many risks, plus, you can't flash custom recovery, and you can maybe downgrade the system and boot, but you still can't downgrade the bootloader...

joel_sinbad said:
Yeah, unfortunately this post makes no sense, I mean, if you accidently flash the gpt.bin, you're screwed... and so many risks, plus, you can't flash custom recovery, and you can maybe downgrade the system and boot, but you still can't downgrade the bootloader...
Click to expand...
Click to collapse
This method is for an XT926 with UNLOCKED BOOTLOADER, with the last 183.46.15 update and the root access lost. I only described the steps that I already done with my phone. My Maxx HD is working and has root access again... I flashed custom recovery too (TWRP 2.8.3.0), I haven't any other problem.

RikRong said:
http://forum.xda-developers.com/showthread.php?t=2789743
Click to expand...
Click to collapse
Thank you, unfortunately is not working for the xt 926 phone that already took the last 183.46.15 update:
"..........************WARNING*************
this guide only works completely if you did NOT take the 183.46.15 update rolling out around 9/9/14 .............".
Until now I don't have any other option, I'm forced to preserve the method that I mentioned in my thread.

ciprianv. said:
Thank you, unfortunately is not working for the xt 926 phone that already took the last 183.46.15 update:
"..........************WARNING*************
this guide only works completely if you did NOT take the 183.46.15 update rolling out around 9/9/14 .............".
Until now I don't have any other option, I'm forced to preserve the method that I mentioned in my thread.
Click to expand...
Click to collapse
The piece you are referring to that doesn't work on .15 is the unlock and root. The downgrade should work on an unlocked phone.
That aside, your steps are very confusing and could easily cause a locked user to brick their phone. Please clarify or I will continue reporting this thread until it gets removed.

RikRong said:
The piece you are referring to that doesn't work on .15 is the unlock and root. The downgrade should work on an unlocked phone.
That aside, your steps are very confusing and could easily cause a locked user to brick their phone. Please clarify or I will continue reporting this thread until it gets removed.
Click to expand...
Click to collapse
I just edited the post. I clearly specified that this methid is ONLY FOR UNLOCKED BOOTLOADERS (XT926M).

ciprianv. said:
I just edited the post. I clearly specified that this methid is ONLY FOR UNLOCKED BOOTLOADERS (XT926M).
Click to expand...
Click to collapse
Thanks for doing that, I just want to make sure no one messes up their phone.

LG G3 D852 Telus/Koodo Marshmallow 30G Stock + Root (Updated 2017-01-02)

Introduction
Due to popular demand I have created a flashable zip from the official firmware released on 2016 July 12th (Version MM 30G)
Pre-requisite
If you haven't root/bump/TWRP already, read the tutorial here.
Disclaimer
I will not be responsible if you brick your phone. Use this tutorial at your own risk. Read the entire tutorial before proceeding.
How to use
To do a clean install:
Go into TWRP -> Wipe system/data -> Format system -> Flash the ROM zip.
To do an update without losing data/apps
Go into TWRP -> Flash the zip.
To get root
Flash my rooted boot.img -> Flash SuperSU V2.79.
If you an boot error, just flash the rooted boot.img again.
Only flash SuperSU V2.79 or above.
The only partitions that will be touched are the system and boot partitions. Bootloader and recoveries will not be touched, so after flashing to new ROM you can go back to TWRP and flash any custom zips!
I also provided a bumped boot.img on the side for those who want to use it with other Marshmallow custom ROMs like Fulmics.
If you want to get root for the stock ROM, you have to flash the rooted boot.img, then install SuperSU from play store. This is currently the only way to get root on official Marshmallow.
I don't have time to remove the bloatwares yet. So if you removed the LG bloatwares previously, they will be back.
Download
D852 Telus/Koodo MM 30G Stock ROM
D852 Telus/Koodo MM Bumped boot.img (no root, use this to unroot)
Rooted boot.img (Flash this to root #Rooted version 2.79)
SuperSU V2.79
Visit my blog for more G3 tutorials

Thanks, just wondering what the bump.img is for and why it is needed to flash another ROM.

powerserge1 said:
Thanks, just wondering what the bump.img is for and why it is needed to flash another ROM.
Click to expand...
Click to collapse
Read this and you'll know everything about rooting G3

hdlineage said:
Read this and you'll know everything about rooting G3
Click to expand...
Click to collapse
Perfect. Can the boot.img be flashed with TWRP instead of Imageprep? Say I flash Fulmics at some point or any other ROM (that has root), then immediately after flash your boot.img within recovery to overwrite the Rogers kernel that most ROMs come with. Just making sure. This extra step is for those with a Telus/Koodo variant of the G3

powerserge1 said:
Perfect. Can the boot.img be flashed with TWRP instead of Imageprep? Say I flash Fulmics at some point or any other ROM (that has root), then immediately after flash your boot.img within recovery to overwrite the Rogers kernel that most ROMs come with. Just making sure. This extra step is for those with a Telus/Koodo variant of the G3
Click to expand...
Click to collapse
Yep, as long as the ROM is based on stock you shouldn't have problem flashing stock kernel.

Would this boot.img work on rogers?

Octane70 said:
Would this boot.img work on rogers?
Click to expand...
Click to collapse
It seems LG released the same MM kernel for all variants in Canada. Theoretically it should work for Rogers too.
You can try it out to see if there's any bugs. If it doesn't work you can just flash back your original boot image (make sure to back up boot partition first!).
Let us know if it works.

Thanks you.
Does anybody have a success story to share about updating without wiping ?

hdlineage said:
It seems LG released the same MM kernel for all variants in Canada. Theoretically it should work for Rogers too.
You can try it out to see if there's any bugs. If it doesn't work you can just flash back your original boot image (make sure to back up boot partition first!).
Let us know if it works.
Click to expand...
Click to collapse
Thanks hdlineage,
If you dont mind i would like to confirm some steps?
I am on rogers MM OTA so i am complete stock.
So i download the kitkat-aboot.img, kitkat-laf.img and twrp
Use your imgprep program to install the img's and twrp.
then back up the current boot.img in twrp, then flash the modified you provided, correct.
Then i could either flash a super user.zip or install super user from the playstore?
Thanks for your work

Octane70 said:
Thanks hdlineage,
If you dont mind i would like to confirm some steps?
I am on rogers MM OTA so i am complete stock.
So i download the kitkat-aboot.img, kitkat-laf.img and twrp
Use your imgprep program to install the img's and twrp.
then back up the current boot.img in twrp, then flash the modified you provided, correct.
Then i could either flash a super user.zip or install super user from the playstore?
Thanks for your work
Click to expand...
Click to collapse
For imageprep to work you will need to downgrade to lollipop first.
It won't work with MM. Currently you need custom recovery to root MM.

Octane70 said:
Would this boot.img work on rogers?
Click to expand...
Click to collapse
Octane70 said:
Thanks hdlineage,
If you dont mind i would like to confirm some steps?
I am on rogers MM OTA so i am complete stock.
So i download the kitkat-aboot.img, kitkat-laf.img and twrp
Use your imgprep program to install the img's and twrp.
then back up the current boot.img in twrp, then flash the modified you provided, correct.
Then i could either flash a super user.zip or install super user from the playstore?
Thanks for your work
Click to expand...
Click to collapse
In order to root using the method described in this thread, you must already been rooted with a bumped TWRP when you were on Lollipop. Refer to OP and the "Requirement" section if you need more information.
If you were not rooted with bumped TWRP previously, then you have two options:
1) Downgrade to LP by using LGUP, root/bump using ImagePrep, then flash according to instructions on this thread
2) Wait for ImagePrep to be updated for MM compatibility and then root (and/or install bumped TWRP).
Your propose method may fail since you are on MM already and ImagePrep is currently compatible with either KK or LP only. If your method works, please let this community know.
There are other root methods available such as the one-click method http://forum.xda-developers.com/lg-g3/general/guide-root-method-lg-devices-t3129197, but I am unable to validate them since I used ImagePrep method on LP only.

hdlineage said:
It seems LG released the same MM kernel for all variants in Canada. Theoretically it should work for Rogers too.
You can try it out to see if there's any bugs. If it doesn't work you can just flash back your original boot image (make sure to back up boot partition first!).
Let us know if it works.
Click to expand...
Click to collapse
bb709394 said:
In order to root using the method described in this thread, you must already been rooted with a bumped TWRP when you were on Lollipop. Refer to OP and the "Requirement" section if you need more information.
If you were not rooted with bumped TWRP previously, then you have two options:
1) Downgrade to LP by using LGUP, root/bump using ImagePrep, then flash according to instructions on this thread
2) Wait for ImagePrep to be updated for MM compatibility and then root (and/or install bumped TWRP).
Your propose method may fail since you are on MM already and ImagePrep is currently compatible with either KK or LP only. If your method works, please let this community know.
There are other root methods available such as the one-click method http://forum.xda-developers.com/lg-g3/general/guide-root-method-lg-devices-t3129197, but I am unable to validate them since I used ImagePrep method on LP only.
Click to expand...
Click to collapse
Thanks for the clarification guys. i used http://forum.xda-developers.com/lg-g3/general/guide-root-method-lg-devices-t3129197 method to root LP

Thanks to op for releasing this but your dropbox is now suspended...an alternate mirror would be helpful please.

Paulicat said:
Thanks to op for releasing this but your dropbox is now suspended...an alternate mirror would be helpful please.
Click to expand...
Click to collapse
Updated with google drive, hopefully this one will stay up.

hdlineage said:
Updated with google drive, hopefully this one will stay up.
Click to expand...
Click to collapse
Cheers downloading now!
Surprised there is no modem.img in the update?
Did the baseband version change?
Mine is a Rogers D852 but is unlocked and was not OTA updated past Lollipop.
The baseband version showing is: MPSS.DI.2.0.1.c1.13-00053-M8974AAAAANPZM-1
Can anyone confirm a change in baseband?

Is there any flashable file available for fido users.?

delete, Rogers should be the same as Fido but can't confirm

Paulicat said:
Cheers downloading now!
Surprised there is no modem.img in the update?
Did the baseband version change?
Mine is a Rogers D852 but is unlocked and was not OTA updated past Lollipop.
The baseband version showing is: MPSS.DI.2.0.1.c1.13-00053-M8974AAAAANPZM-1
Can anyone confirm a change in baseband?
Click to expand...
Click to collapse
No baseband update. Mine is the same as above.
---------- Post added at 02:21 PM ---------- Previous post was at 02:18 PM ----------
patelsavan said:
Is there any flashable file available for fido users.?
Click to expand...
Click to collapse
It is the same (use bumped zip) from this thread. I have a Koodo G3 unlocked on the FIdo network configured with Fido APN and it works. No issues yet, have not tested GPS or Bluetooth. Since there is no baseband update, I don't think there will be any issues.

My Fulmics install failed to boot and was stuck on LG logo with flashing green & blue led. Stock MM bumped zip install works just fine.
Which boot image should I have used and what about installing SuperSU?

Current root methods in OP fails. Tried both boot images and tried bumped boot image. Supersu failed on version 2.65, 2.67, 2.68, 2.70.
hdlineage: keep getting the error message it is failing to patch the boot.img since Supersu detects boot is already patched. Any ideas?

Stock Recovery for Moto G4 Plus Needed

Hello, I want to install an ota update but i have a custom recovery and I DON'T want to install the stock ROM, I just need the recovery image or flashable zip. Moto G4 Plus XT 1640

Edu_8914 said:
Hello, I want to install an ota update but i have a custom recovery and I DON'T want to install the stock ROM, I just need the recovery image or flashable zip. Moto G4 Plus XT 1640
Click to expand...
Click to collapse
Is there an OTA for xt1640 ? What version is it ?

pv979 said:
Is there an OTA for xt1640 ? What version is it ?
Click to expand...
Click to collapse
It's MPJ24.139-50.
Got it yesterday afternoon and the system really feels snappier and faster.
---------- Post added at 08:22 AM ---------- Previous post was at 08:18 AM ----------
Edu_8914 said:
Hello, I want to install an ota update but i have a custom recovery and I DON'T want to install the stock ROM, I just need the recovery image or flashable zip. Moto G4 Plus XT 1640
Click to expand...
Click to collapse
Check the post below. There's a working torrent in the youtube link described.
I am not sure if it's the correct version, please try to make sure before commiting changes.
http://forum.xda-developers.com/mot...t-img-root-t3387113/post67552800#post67552800

bishteca said:
It's MPJ24.139-50.
Got it yesterday afternoon and the system really feels snappier and faster.
Click to expand...
Click to collapse
Great: And the full image is already available on Filefactory

pv979 said:
Great: And the full image is already available on Filefactory
Click to expand...
Click to collapse
Nice.
Quick question, did any of you on XT-1640 manage to safely root your phone?
You know, without losing wi-fi, data etc.? Which method did you use.

bishteca said:
Nice.
Quick question, did any of you on XT-1640 manage to safely root your phone?
You know, without losing wi-fi, data etc.? Which method did you use.
Click to expand...
Click to collapse
I did, got no problems so far. But you will lose all data when unlocking the bootloader, if its already unlocked then rooting isn't going to wipe your data. I also installed xposed and got no problems with it

Edu_8914 said:
I did, got no problems so far. But you will lose all data when unlocking the bootloader, if its already unlocked then rooting isn't going to wipe your data. I also installed xposed and got no problems with it
Click to expand...
Click to collapse
Cool! Do you think this is the best guide to follow?
I really cannot afford to have a bricked or semi-working phone...
Thanks for the tip!

bishteca said:
Cool! Do you think this is the best guide to follow?
I really cannot afford to have a bricked or semi-working phone...
Thanks for the tip!
Click to expand...
Click to collapse
Sorry for not posting the link for anything, its because the video isn't in english... maybe I can help you if your device model is XT1640

Moto g4 Plus stuck at bootloader
Hi,
My Moto G4 plus is now stuck at bootloader. Below are the details of errors that I get
Recovery Mode - Failed to validate recovery image
Start the phone - Failed to validate boot image
Flash stock ROM via ADB - Pre flash validation failed
Flash stock boot.img - Image boot failed validation (Security version Downgare)
I am not even able to unlock the bootloader as the adb returns a message saying I need to toggle 'Allow OEM Unlock" in the Developers Menu. I connot do that as I cannot boot my phone.
Please help.

Karumbaiah said:
Hi,
My Moto G4 plus is now stuck at bootloader. Below are the details of errors that I get
Recovery Mode - Failed to validate recovery image
Start the phone - Failed to validate boot image
Flash stock ROM via ADB - Pre flash validation failed
Flash stock boot.img - Image boot failed validation (Security version Downgare)
I am not even able to unlock the bootloader as the adb returns a message saying I need to toggle 'Allow OEM Unlock" in the Developers Menu. I connot do that as I cannot boot my phone.
Please help.
Click to expand...
Click to collapse
Looks like your trying to downgrade firmware there and from what I'm aware you can't downgrade certain sections like bootloader etc. What is it you're trying to achieve?

Priezti said:
Looks like your trying to downgrade firmware there and from what I'm aware you can't downgrade certain sections like bootloader etc. What is it you're trying to achieve?
Click to expand...
Click to collapse
I was just trying to flash the stock rom. Had some glitches in my phone. While I was trying to flash via adb, couple of steps failed and then I was not able to boot my phone back.
Im sure that I'm using the latest version of ROM. However, it's the one before the latest security patch. However, the boot image and recovery image should remain the same.
Here's the version that I'm trying to flash.
XT1641-XT1643_6.0.1_MPJ24.139-13.1_cid50_subsidy-DEFAULT_CFC
No matter what I do now, I just cannot get my phone to boot in recovery mode or just boot normally.

Karumbaiah said:
I was just trying to flash the stock rom. Had some glitches in my phone. While I was trying to flash via adb, couple of steps failed and then I was not able to boot my phone back.
Im sure that I'm using the latest version of ROM. However, it's the one before the latest security patch. However, the boot image and recovery image should remain the same.
Here's the version that I'm trying to flash.
XT1641-XT1643_6.0.1_MPJ24.139-13.1_cid50_subsidy-DEFAULT_CFC
No matter what I do now, I just cannot get my phone to boot in recovery mode or just boot normally.
Click to expand...
Click to collapse
Bro to flash the custom MM you have to downgrade first
http://forum.xda-developers.com/mot...owngrade-to-marshmallow-nougat-t3515961/page3
Use this thread
And follow the exact steps

New ZE551KL locked bootloader/no root MM

Hi,
I've just got a new ZE551KL (z00td) with a locked bootloader and no root. Since the phone have the latest android 6.0.1 build I have difficulty to root it and unlock the bootloader. I did many research and I think it's really confusing. It seem to root my phone I need an unlocked bootloader but to unlock it I have to root my phone. The last interesting thing I've found for my phone is to flash a pre-rooted system.img & boot.img ( http://www.asus.com/zentalk/thread-80274-1-1.html ) but I also get stuck here since the guide tell me to flash both and I can only find the system.img.
I would like to know if there's any guide to root & unlock my bootloader on my ZE551KL. Thanks a lot!

It's a pain, but you may have to roll back to an earlier version of the firmware...back to lollipop. There are instructions in one of the threads on how to do that. I was able to unlock before the marshmallow update with the official unlock utility from Asus. Once you are unlocked, the easiest way to root is just to either boot twrp.img (previously downloaded and extracted to the adb folderon your computer) using fastboot (lots of threads here with instructions, too) and install supersu.zip. Or if you want to install twrp as your recovery, you can flash it from fastboot, then flash the zip of supersu. If you need more help, I am no expert by any means, but I have done this with my own ze551kl and might be able to give you some more hints.
Personally I would avoid the prerooted images as I had a lot of trouble with them and nearly bricked my phone by trying them out.

Thanks a lot for your reply! That's what I'm trying right now. I'm rolling back to lollipop from an official rom file from asus website. So far, I tried to flash it with stock recovery but it said that I cannot install a older version on top of a newer one. I did an downgrade of the recovery and now I'm waiting for the flash.

cilk said:
Thanks a lot for your reply! That's what I'm trying right now. I'm rolling back to lollipop from an official rom file from asus website. So far, I tried to flash it with stock recovery but it said that I cannot install a older version on top of a newer one. I did an downgrade of the recovery and now I'm waiting for the flash.
Click to expand...
Click to collapse
Excuse me, how did you do the downgrade of the recovery? Can you share the .img with me? I have TWRP installed with locked bootloader

I've found older stock recovery on this site : https://mega.nz/#F!lodnzDhK!H5ChxausDTyko1qGlnF7dw!Fg9FwLoa
Credit to ThanveerAliSayed in XDA

Well it seem that I cannot downgrade, the latest recovery don't want to install a lower version and when I try to get a older stock recovery I still cannot downgrade since it get stuck at verifying image update package.
Also I've noticed that my version is 21.40.1220.1698 and so far I can't find anything related to this version for rooting or unlocking bootloader. Even the official firmware on asus website for the ZE551KL is older than this version and I couldn't flash it. I had to get it from https://asus.kremowka.xyz/categories/show/2 because I've soft bricked my device. I'm still trying to find a solution...

cilk said:
I've found older stock recovery on this site : https://mega.nz/#F!lodnzDhK!H5ChxausDTyko1qGlnF7dw!Fg9FwLoa
Credit to ThanveerAliSayed in XDA
Click to expand...
Click to collapse
I would NOT use this stock image for ze551kl. There is one for the 601 and the 550 but not 551kl. I will find the thread with the first stock recovery posted that I used and post the link in a while. Give me a chance to find it. I would roll back to it, then upgrade to the stock firmware listed in the unlocker notes. Once it's unlocked, you can go to the last lollipop before marshmallow and flash it. I would then factory reset, then flash marshmallow. After you have it working, then flash twrp (or just boot it in adb) as I said above and flash supersu.
I will warn you that a lot of people have had trouble unlocking and this might not work to unlock.
---------- Post added at 09:09 PM ---------- Previous post was at 08:55 PM ----------
http://forum.xda-developers.com/attachment.php?attachmentid=3585486&d=1450811354 here is the link to stock for the very first stock firmware. I followed a video posted on YouTube from "themobileshots" on returning to stock from cm13. I doubt you can flash the stock recovery without flashing twrp first, then flashing from there. There are a lot of people in this forum that can help and most are pretty patient. Don't give up.

Finally I got my phone unlocked and rooted and it was too easy ...
I used fastboot to flash TWRP ( http://forum.xda-developers.com/zen...e601kl-official-marshmallow-wwv21-40-t3424903 ) and after that I flashed the latest CM13 from TWRP to gain root and unlocked my bootloader with this guide http://forum.xda-developers.com/zen...de-unlock-bootloader-asus-unlock-app-t3405850
I never though I could flash TWRP with a locked bootloader but it worked very well.

cilk said:
Finally I got my phone unlocked and rooted and it was too easy ...
I used fastboot to flash TWRP ( http://forum.xda-developers.com/zen...e601kl-official-marshmallow-wwv21-40-t3424903 ) and after that I flashed the latest CM13 from TWRP to gain root and unlocked my bootloader with this guide http://forum.xda-developers.com/zen...de-unlock-bootloader-asus-unlock-app-t3405850
I never though I could flash TWRP with a locked bootloader but it worked very well.
Click to expand...
Click to collapse
Well, I have TWRP with locked bootloader and tried to unlock the bootloader with that guide in CM13. I didn't work for me
long2ski said:
I would NOT use this stock image for ze551kl. There is one for the 601 and the 550 but not 551kl. I will find the thread with the first stock recovery posted that I used and post the link in a while. Give me a chance to find it. I would roll back to it, then upgrade to the stock firmware listed in the unlocker notes. Once it's unlocked, you can go to the last lollipop before marshmallow and flash it. I would then factory reset, then flash marshmallow. After you have it working, then flash twrp (or just boot it in adb) as I said above and flash supersu.
I will warn you that a lot of people have had trouble unlocking and this might not work to unlock.
---------- Post added at 09:09 PM ---------- Previous post was at 08:55 PM ----------
http://forum.xda-developers.com/attachment.php?attachmentid=3585486&d=1450811354 here is the link to stock for the very first stock firmware. I followed a video posted on YouTube from "themobileshots" on returning to stock from cm13. I doubt you can flash the stock recovery without flashing twrp first, then flashing from there. There are a lot of people in this forum that can help and most are pretty patient. Don't give up.
Click to expand...
Click to collapse
I tried to do a lot of things to get back to Stock ROM but they didn't work. I watched that tutorial but the files belongs to ZE550kl, so any other ideas? :crying:

niveku said:
Well, I have TWRP with locked bootloader and tried to unlock the bootloader with that guide in CM13. I didn't work for me
Click to expand...
Click to collapse
Me too the first time I tried to unlock my bootloader in CM13 it didn't worked. I followed the guide and I did this :
Phone connected to the computer with USB debug and using ADB :
Code:
adb shell
su
Then I followed the backup procedure and I did the magic command to unlock it :
Code:
echo -ne "\x01" | dd obs=1 count=1 seek=16 of=/dev/block/bootdevice/by-name/devinfo
After I rebooted in fastboot so see if my device was unlocked but no it was still lock. I did two adb reboot with these command :
Code:
fastboot oem adb_enable
fastboot oem adb_enable
You have to do these twice.
After this my bootloader was still locked but I did a normal reboot and tried the magic command and voila! Bootloader unlocked.
niveku said:
I tried to do a lot of things to get back to Stock ROM but they didn't work. I watched that tutorial but the files belongs to ZE550kl, so any other ideas? :crying:
Click to expand...
Click to collapse
If you have the ZE551KL like me you have to use file for a Z00T. You can check this page to know which device is a Z00T : http://forum.xda-developers.com/zenfone-2-laser/general/index-zenfone-2-laser-variants-t3369569
In my case I also had some difficulty to go back to Stock since I couldn't find the right firmware for mine because my android version is 21.40.1220.1698 and you have to flash the same version. The only place I found it was there https://asus.kremowka.xyz/categories/show/2 under the ZE601KL

cilk said:
In my case I also had some difficulty to go back to Stock since I couldn't find the right firmware for mine because my android version is 21.40.1220.1698 and you have to flash the same version. The only place I found it was there https://asus.kremowka.xyz/categories/show/2 under the ZE601KL
Click to expand...
Click to collapse
i see there is a mm unlock apk for the ze601kl there also...i wonder if that would work on the ze551kl.

niveku said:
Well, I have TWRP with locked bootloader and tried to unlock the bootloader with that guide in CM13. I didn't work for me
I tried to do a lot of things to get back to Stock ROM but they didn't work. I watched that tutorial but the files belongs to ZE550kl, so any other ideas? :crying:
Click to expand...
Click to collapse
The video is for the 550 but the process is the same for the 551kl (zootd). I downloaded the stock firmware at the bottom of the page on the Asus support page https://www.asus.com/support/Download/39/1/0/23/SZCx58yhB5Jst0yI/32/ , extracted it, grabbed the boot.IMG from there and put it on my memory card along with the stock recovery from the link above (renamed it recovery.img) and the full firmware (drag the original, leave it zipped). Then I did as the video says and wiped in twrp, flashed the boot and recovery, wiped cache, then flashed the firmware. It took awhile for the process to complete. Hope this helps.

cilk said:
Code:
fastboot oem adb_enable
fastboot oem adb_enable
You have to do these twice.
After this my bootloader was still locked but I did a normal reboot and tried the magic command and voila! Bootloader unlocked.
If you have the ZE551KL like me you have to use file for a Z00T. You can check this page to know which device is a Z00T : http://forum.xda-developers.com/zenfone-2-laser/general/index-zenfone-2-laser-variants-t3369569
Click to expand...
Click to collapse
Well, somehow that worked! Thanks, you should make a new post as a tutorial, I'm sure people will find that usefull.
Edit: Has someone rooted stock MM?

niveku said:
Well, somehow that worked! Thanks, you should make a new post as a tutorial, I'm sure people will find that usefull.
Edit: Has someone rooted stock MM?
Click to expand...
Click to collapse
Yes I'm currently writing one
For the stock MM yep I did it. I just installed the stock one after my bootloader was unlock and followed a tutorial here for root. I really like the stock Asus, way better than the samsung with touchwiz in my opinion.

beenkenobee said:
i see there is a mm unlock apk for the ze601kl there also...i wonder if that would work on the ze551kl.
Click to expand...
Click to collapse
So, to recap. If you are at the latest update, and have never previously unlocked bootloader or rooted your phone. The ASUS provided unlock tool won't work on the latest update. With it locked you can't install custom recovery or downgrade the firmware to an older version so that you can unlock it. Catch 22. Screwed until ASUS releases an update to their unlock tool or someone figures something else out. Or am I missing something? Cause I've been trying to do something with my kids phone for two days now and no luck here doing anything. Bout 8 million guides and files around the net and none of em seem to do squat in my situation. Any comments? Let's hear em.
waltsmith

beenkenobee said:
i see there is a mm unlock apk for the ze601kl there also...i wonder if that would work on the ze551kl.
Click to expand...
Click to collapse
great find I was able to unlock my ZE551KL MM with that tool

steadydecline said:
great find I was able to unlock my ZE551KL MM with that tool
Click to expand...
Click to collapse
it really worked?
cool!
no hiccups or problems?

Downgraded to MM via TWRP backup, need to upgrade with root.

Here is my story,
I recently updated my moto g4 plus XT1643 Indian version to android 7. Then i tried to root with some guide from google, it softbricked my device. Fortunately i had a MM nandroid backup, i backed up and everything is alright.
I tried to upgrade to android N again, but i got an error "Bootloader preflash error" and "Remote failure" during same course of locking my bootloader and setting up system as default. Please help, how can i upgrade again to android 7?

Karthik_pm said:
Here is my story,
I recently updated my moto g4 plus XT1643 Indian version to android 7. Then i tried to root with some guide from google, it softbricked my device. Fortunately i had a MM nandroid backup, i backed up and everything is alright.
I tried to upgrade to android N again, but i got an error "Bootloader preflash error" and "Remote failure" during same course of locking my bootloader and setting up system as default. Please help, how can i upgrade again to android 7?
Click to expand...
Click to collapse
Reinstall the original stock rom for your device again, not with a TWRP nandroid backup, but, using fastboot! After that, preform a regular OTA update, just to be sure you're on the latest Marshmallow.
Then flash the Nougat update using STOCK recovery!
If you want to root again, follow this guide carefully!
http://forum.xda-developers.com/showthread.php?t=3484672
Send with my Moto G4 Plus (XT1642) on Android 7.0 using Tapatalk!

The link for guide-how-root-nougat-moto-g4-plus and [GUIDE][XT1643][XT1640][XT1626] How to update to Nougat [Athene][stock][Android N] are posted on top of the forum.
Why some people choose to ignore them, is a mystery to me...

smitharro said:
Reinstall the original stock rom for your device again, not with a TWRP nandroid backup, but, using fastboot! After that, preform a regular OTA update, just to be sure you're on the latest Marshmallow.
Then flash the Nougat update using STOCK recovery!
If you want to root again, follow this guide carefully!
http://forum.xda-developers.com/showthread.php?t=3484672
Send with my Moto G4 Plus (XT1642) on Android 7.0 using Tapatalk!
Click to expand...
Click to collapse
Thanks, will give it a try
SoNic67 said:
The link for guide-how-root-nougat-moto-g4-plus and [GUIDE][XT1643][XT1640][XT1626] How to update to Nougat [Athene][stock][Android N] are posted on top of the forum.
Why some people choose to ignore them, is a mystery to me...
Click to expand...
Click to collapse
Hi, i tried this method and upgraded to Nougat successfully, later i tried to root and soft bricked the device and recovered MarshMallow from TWRP. Now, this upgrade method is not working, that's the problem.

smitharro said:
Reinstall the original stock rom for your device again, not with a TWRP nandroid backup, but, using fastboot! After that, preform a regular OTA update, just to be sure you're on the latest Marshmallow.
Then flash the Nougat update using STOCK recovery!
If you want to root again, follow this guide carefully!
http://forum.xda-developers.com/showthread.php?t=3484672
Send with my Moto G4 Plus (XT1642) on Android 7.0 using Tapatalk!
Click to expand...
Click to collapse
Not able to flash anything with fastboot, "Bootloader downgrade error"

Got everything normal,
Flashed boot and system files, omitted bootloader, gpt.bin and recovery. Later flashed recovery and android N update, everything okay now, thanks everyone.

Once upgraded, the N Bootloader cannot be downgraded to MM, it was somewhere in those threads.

SoNic67 said:
Once upgraded, the N Bootloader cannot be downgraded to MM, it was somewhere in those threads.
Click to expand...
Click to collapse
Successfully upgraded to android N and rooted, but while flashing recovery, i saw "Bootloader not signed or corrupt" is this normal or should i do something?