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[GUIDE] Downgrade to Marshmallow from Nougat Soak Test

Hey guys , many people were having problems downgrading their device so i thought i should make this thread.
I have downgraded my phone successfully and this should also work for other variants.
So let's Start
Prerequisites :
Phone with Unlocked bootloader
Drivers Installed
Phone Charged to 50%
Phone having Nougat Soak Test
mfastboot and adb
How To :
First Setup adb and Fastboot , by extracting the mfastboot-v2 file in the C:\ directory. So that the files are in a folder in the C directory. Ill name this folder as adb.
Download the correct firmware(Stock Marshmallow) for your device , I have links to all down below.
Extract the firmware files in the same adb folder.
Download the run.bat file . Link below
copy the run.bat file inside the adb folder
Open your phone in bootloader mode by first turning off your phone. Then pressing and holding power and volume down at the same time for around 3 seconds.
Connect your phone to your computer via a usb cable
Double click and run the run.bat file.
After the window closes. Start the phone by selecting the start option in the bootloader mode.
Tap the power button to start.
That's it Now you have successfully downgraded to Marshmallow.
You can also Follow the Video i made on my channel :
https://youtu.be/4OQQn105Bp8
Download :
fastboot and adb : http://www.mediafire.com/file/v60h40vkwet979y/mfastboot-v2.zip
RUN.bat : http://www.mediafire.com/file/6i92vcoa5m1oslb/run.bat
Drivers: http://www.motorola.com/getmdmwin
Firmware --
XT1622 & XT1621 :http://www.filefactory.com/file/1pq...4.139-23.4_cid50_subsidy-DEFAULT_CFC.xml.zip#
XT1641-XT1643 : http://www.filefactory.com/file/6jg...24.139-13.1_cid50_subsidy-DEFAULT_CFC.xml.zip
XT1625(US) : https://accounts.motorola.com/ssoau...edirect/standalone/bootloader/recovery-images
FOR REST FIND FROM THIS SITE : http://www.filefactory.com/folder/c6cdedc45a775d27/?sort=created&order=DESC&show=25&page=1

Hello and thanks. Im trying to download for Xt1622 but got message "https://goo.gl/SLFcsx – this goo.gl shortlink has been disabled. It was found to be violating our Terms of Service. Click here and here for more information about our terms and policies respectively."

It's working
PD: I'm the person from Reddit

Are you able to lock the bootloader after downgrading?

kosmasgr said:
Hello and thanks. Im trying to download for Xt1622 but got message "https://goo.gl/SLFcsx – this goo.gl shortlink has been disabled. It was found to be violating our Terms of Service. Click here and here for more information about our terms and policies respectively."
Click to expand...
Click to collapse
Will stop using link shortners from now on. *Updated the Links*

EvilHowl said:
It's working
PD: I'm the person from Reddit
Click to expand...
Click to collapse
Nice

claytoncamilleri100 said:
Are you able to lock the bootloader after downgrading?
Click to expand...
Click to collapse
[EDIT] Noo, but i really have no idea why people lock bootloaders after unlocking them.
Sorry for the wrong information, i locked my bootloader on the nougat soak test and misread your question!

TechBurner said:
Yes, but i really have no idea why people lock bootloaders after unlocking them.
Click to expand...
Click to collapse
Did you relock it ? I don't think it's possible if you are downgrdin from 7.0 as the booloader is upgraded

i want to revert from cm14.1 to marshmallow. so the procedure is same or can anyone suggest me what to do?? i have the stock image also

pranjal24 said:
i want to revert from cm14.1 to marshmallow. so the procedure is same or can anyone suggest me what to do?? i have the stock image also
Click to expand...
Click to collapse
Yes this should work .

I have a locked bootloader and im on soak build NPJ25.75-2.
Do I need to unlock the bootloader to flash this new soak build. Or can I downgrade to MM without unlocking bootloader.
I dont understand that if I'm flashing official files then why do I need to unlock the bootloader.
What I want to do is to update to the lastest build of N from soak build without unlocking bootloader.

Iqbal Ansari said:
What I want to do is to update to the lastest build of N from soak build without unlocking bootloader.
Click to expand...
Click to collapse
I think you'll have to flash Marshmallow as described in this thread. Then sideload the update OTA via recovery.
If anybody is unable to download from FileFactory (like me), and happen to be on the XT1643, download link for the stock ROM is available on this thread. Happy Nougat times!

it ll unlock the bootloader?

TechBurner said:
Hey guys , many people were having problems downgrading their device so i thought i should make this thread.
I have downgraded my phone successfully and this should also work for other variants.
Click to expand...
Click to collapse
I have a locked bootloader and im on soak build NPJ25.75-2.
Do I need to unlock the bootloader to flash this build. Or can I downgrade to MM without unlocking bootloader.
What I want to do is to update to the captured official ota without unlocking bootloader.

i tried to downgrade my XT-1643 from naught soak test but i ended in START UP FAILED. Yours device didn't start up successfully. Use the software repair assistance on a computer to repair your device. Connect your device to your computer to get the software repair assistant....Tried flashing stock mm rom but msg again and again appearing in bootloader

shakti30 said:
i tried to downgrade my XT-1643 from naught soak test but i ended in START UP FAILED. Yours device didn't start up successfully. Use the software repair assistance on a computer to repair your device. Connect your device to your computer to get the software repair assistant....Tried flashing stock mm rom but msg again and again appearing in bootloader
Click to expand...
Click to collapse
It's solved right?

illikkalshahid said:
I have a locked bootloader and im on soak build NPJ25.75-2.
Do I need to unlock the bootloader to flash this build. Or can I downgrade to MM without unlocking bootloader.
What I want to do is to update to the captured official ota without unlocking bootloader.
Click to expand...
Click to collapse
You need to unlock bootloader to downgrade.

TechBurner said:
It's solved right?
Click to expand...
Click to collapse
yes..

As I'm about to downgrade from Nougat to MM, will there be problem related to IMEI??
And can i root MM as usual or are there any complications??
Tnx in advance

TechBurner said:
You need to unlock bootloader to downgrade.
Click to expand...
Click to collapse
Thanks for the reply. If we get full stock rom anyway(if i am ready to wait), can I flash without unlocking bootloader. Is there any chance to get the stock nougat firmware in future

Completely Reset Honor Phone

Hi All, I currently have an Honor 8 that was previously bootloader unlocked and rooted with TWRP installed on EMUI 4. After I updated to EMUI 5 and Android 7.0, my bootloader was relocked, even though it says my phone is unlocked and untrusted when I turn it on, and I cannot install or access TWRP. I would like to completely reset my phone and reinstall the OS with the recent update, but I have no idea how. How can I do this?
Thanks!

Rommco05 said:
Hi, your bootloader is still unlocked but after instal EMUI5 was reflashed recovery from stock firmware. If you want reinstall / reset your phone and relock bootloader, you must do rollback to MM and after this will be your bootloader relocked. Another way is manually relock, bootloader via fastboot. On my opinion the first way (downgrade to MM) is better for you
Click to expand...
Click to collapse
I'm sorry, I have no idea what you're saying. What is mm?

Rommco05 said:
Hi, your bootloader is still unlocked but after instal EMUI5 was reflashed recovery from stock firmware. If you want reinstall / reset your phone and relock bootloader, you must do rollback to MM and after this will be your bootloader relocked. Another way is manually relock, bootloader via fastboot. On my opinion the first way (downgrade to MM) is better for you
Click to expand...
Click to collapse
Rommco05 said:
MM Marshmallow Android 6
Click to expand...
Click to collapse
So you're saying if I were to roll back to marshmallow, my bootloader would be relocked and my phone wouldn't be so broken. And then I would directly update to the new version of android? If so, how would I do that? Thanks!

Mate 9 Unlock/Relock/Lock question

Hello, i have a big doubt about unlock my Mate 9.
I have read some guides but i'am confused, i will not lose the warranty and i see that with software dc-unlocker is possible relock the bootloader at original status, it is right? there are other softwares that do same job?
Sorry for my bad english.
thanks for help

Khris00 said:
Hello, i have a big doubt about unlock my Mate 9.
I have read some guides but i'am confused, i will not lose the warranty and i see that with software dc-unlocker is possible relock the bootloader at original status, it is right? there are other softwares that do same job?
Sorry for my bad english.
thanks for help
Click to expand...
Click to collapse
There's a difference between lock and relock.
Relock will say 're-locked' in the bootloader, and that's probably voiding warranty.
You can get it to say 'locked' by flashing official firmware, you have a few options here...
1. Firmware Finder
2. Flash update guide
3. Dload method (only for C636B136 and AL00C00B115)
4. FunkyHuawei (paid)
5. Dc unlocked (i think anyway, and paid)

ante0 said:
There's a difference between lock and relock.
Relock will say 're-locked' in the bootloader, and that's probably voiding warranty.
You can get it to say 'locked' by flashing official firmware, you have a few options here...
1. Firmware Finder
2. Flash update guide
3. Dload method (only for C636B136 and AL00C00B115)
4. FunkyHuawei (paid)
5. Dc unlocked (i think anyway, and paid)
Click to expand...
Click to collapse
thanks for answer
So is possible change the status just flashing the stock firmware? is so simple?
i need to do then unlock bootloader>>install modded recovery>>flash modded rom. For return to the stock firmware and bootloader locked what i need to do? i flash the stock firmaware but the twrp remain?
thanks

Khris00 said:
thanks for answer
So is possible change the status just flashing the stock firmware? is so simple?
i need to do then unlock bootloader>>install modded recovery>>flash modded rom. For return to the stock firmware and bootloader locked what i need to do? i flash the stock firmaware but the twrp remain?
thanks
Click to expand...
Click to collapse
No. When you flash stock firmware everything is back to stock. If there was a way to flash a modified update.zip with Twrp as recovery instead of stock recovery it would be possible. But as far as I know we can't yet. I've tried to repack using Huawei Update extractor but it doesn't want to, header mismatch. (this is on all extracted files, not just twrp)
The only reason to get locked bootloader would be if you needed to return the phone because of a software error. If it's hardware it should be replaced anyway.

ante0 said:
There's a difference between lock and relock.
Relock will say 're-locked' in the bootloader, and that's probably voiding warranty.
You can get it to say 'locked' by flashing official firmware, you have a few options here...
1. Firmware Finder
2. Flash update guide
3. Dload method (only for C636B136 and AL00C00B115)
4. FunkyHuawei (paid)
5. Dc unlocked (i think anyway, and paid)
Click to expand...
Click to collapse
ante0 said:
No. When you flash stock firmware everything is back to stock. If there was a way to flash a modified update.zip with Twrp as recovery instead of stock recovery it would be possible. But as far as I know we can't yet. I've tried to repack using Huawei Update extractor but it doesn't want to, header mismatch. (this is on all extracted files, not just twrp)
The only reason to get locked bootloader would be if you needed to return the phone because of a software error. If it's hardware it should be replaced anyway.
Click to expand...
Click to collapse
thanks for help Ante and sorry for my newbie questions, i will just flash one mod rom instead a stock i have now(B182) because i don't like emui, but if is possible when i'll go to sell i can back to stock condition and warranty Ok, i can do that?
thanks

Khris00 said:
thanks for help Ante and sorry for my newbie questions, i will just flash one mod rom instead a stock i have now(B182) because i don't like emui, but if is possible when i'll go to sell i can back to stock condition and warranty Ok, i can do that?
thanks
Click to expand...
Click to collapse
Yep. Flashing stock firmware will do that.
You won't get rid of emui though. We don't have AOSP so emui is always there...

ante0 said:
Yep. Flashing stock firmware will do that.
You won't get rid of emui though. We don't have AOSP so emui is always there...
Click to expand...
Click to collapse
you mean all modded roms are emui based?

Khris00 said:
you mean all modded roms are emui based?
Click to expand...
Click to collapse
Yes.
And there are only 2. RomAur and Ephemeral

ante0 said:
Yep. Flashing stock firmware will do that.
You won't get rid of emui though. We don't have AOSP so emui is always there...
Click to expand...
Click to collapse
ante0 said:
Yes.
And there are only 2. RomAur and Ephemeral
Click to expand...
Click to collapse
thanks again

ante0 said:
There's a difference between lock and relock.
Relock will say 're-locked' in the bootloader, and that's probably voiding warranty.
You can get it to say 'locked' by flashing official firmware, you have a few options here...
1. Firmware Finder
2. Flash update guide
3. Dload method (only for C636B136 and AL00C00B115)
4. FunkyHuawei (paid)
5. Dc unlocked (i think anyway, and paid)
Click to expand...
Click to collapse
sorry for my bad thing. But can i ask you help me this case:
i have Mate 9 Pro LON-L29C636C361 (lastest Oreo ) , but my bootloader is unlocked, and maybe not have stock recovery .
So, which method can flash again full rom C361 (3 file : update.zip, data full, hw...etc) and complete back to stock with locked bootloader???
I read somewhere about method LON-HWOTA, but it fail when flash TWRP step, because i am on Oero, so this method can not use in this my case . Can you show me another way ?

to relock bootloader on Android 8 (MUI8), only works if you have your CORRECT oeminfo.bin. make sure you backup yours before rebranding
1. just flash TWRP
2. make folder folder HWOTA8 on SD card
3. Download HWOTA8 and copy "hwota8_rebrand" to SDcard
4. Copy your oeminfo.bin file to HWOTA8 folder.. Make sure to rename your file to oeminfo.bin
5. Boot into TWRP and install from SDcard hwota8_rebrand
Done bootloader relocked

Question How to flash stock firmware without root ?

hi, anyone has some kind of advice to flash old firmware as the newest have a lot of problems in terms of camera quality ? i don't have rooted my pixel 7 pro ...

Albi Lukaj said:
hi, anyone has some kind of advice to flash old firmware as the newest have a lot of problems in terms of camera quality ? i don't have rooted my pixel 7 pro ...
Click to expand...
Click to collapse
You can install the OTA update from here. Just follow the instructions Google provided at the top of the page and you should be all updated. It's only the full images that require the bootloader to be unlocked.

Just go look up factory images for Pixel phones. You can install firmware right from the web browser. You don't need to have root. Root is optional.

Do you mean without an unlocked bootloader? Root is not the same thing and does not determine how you can flash firmware.
If your bootloader is unlocked, you can use the Android Flash Tool. If your bootloader is not unlocked, downgrading is impossible.
UltimateGamer83 said:
Just go look up factory images for Pixel phones. You can install firmware right from the web browser. You don't need to have root. Root is optional.
Click to expand...
Click to collapse
This only works if OEM Unlocking is enabled in Developer Options.

V0latyle said:
Do you mean without an unlocked bootloader? Root is not the same thing and does not determine how you can flash firmware.
If your bootloader is unlocked, you can use the Android Flash Tool. If your bootloader is not unlocked, downgrading is impossible.
This only works if OEM Unlocking is enabled in Developer Options.
Click to expand...
Click to collapse
so i just need to unlock the bootloader and then i can install old firmware following the procedure ?

Albi Lukaj said:
so i just need to unlock the bootloader and then i can install old firmware following the procedure ?
Click to expand...
Click to collapse
Yes

Albi Lukaj said:
so i just need to unlock the bootloader and then i can install old firmware following the procedure ?
Click to expand...
Click to collapse
@Albi Lukaj, Please be aware that unlocking your bootloader WILL WIPE YOUR DEVICE AND RETURN IT TO STOCK!!!
If that is not preferable, you might try applying the OTA like stated in Post #2, but I am not sure if it works downgrading a version (it probably doesn't)...

Will I get a brick if I lock bootloader with an old stock ROM?

I want to relock bootloader, but will I get brick if I lock bootloader with old stock ROM installed on device?

Look inside here:
Lock BootLoader after Rooting?
Thanks for taking time to read my query. I was wondering if I've to lock boot-loader after rooting ( I just rooted my Oero) and before looking can I take everything backup on titanium backup and then restore everything after locking ? I'm I...
forum.xda-developers.com

jwoegerbauer said:
Look inside here:
Lock BootLoader after Rooting?
Thanks for taking time to read my query. I was wondering if I've to lock boot-loader after rooting ( I just rooted my Oero) and before looking can I take everything backup on titanium backup and then restore everything after locking ? I'm I...
forum.xda-developers.com
Click to expand...
Click to collapse
I know that if I install modified ROM and lock bootloader I will get a brick. But will I get a brick if i install official (stock) ROM but old version and then lock bootloader? For example, I installed stock ROM (not modified) with Android 10, but the latest is Android 11 then I locked bootloader. Will I get a brick?

jwoegerbauer said:
Look inside here:
Lock BootLoader after Rooting?
Thanks for taking time to read my query. I was wondering if I've to lock boot-loader after rooting ( I just rooted my Oero) and before looking can I take everything backup on titanium backup and then restore everything after locking ? I'm I...
forum.xda-developers.com
Click to expand...
Click to collapse
The question is, can I lock the bootloader with the old version of the official firmware installed without getting a brick. Because the old version of the firmware works smoother.

Locking a bootloader doesn't affect ROM actually installed: Lock or Unlock will wipe your data, that's all.

jwoegerbauer said:
Locking a bootloader doesn't affect ROM actually installed: Lock or Unlock will wipe your data, that's all.
Click to expand...
Click to collapse
So can I install old version of fw? I heard something about rollback protection.

Oybek78 said:
So can I install old version of fw? I heard something about rollback protection.
Click to expand...
Click to collapse
You still, or I didn´t find, that you mention the model of your device, that´s matter to have the right answer.
Also, it depends on which method you used to flash the ROM, if you officially, flashed the ROM, and the rollback didn´t affect your device, then it won´t do, locking or unlocking it.

Oybek78 said:
So can I install old version of fw? I heard something about rollback protection.
Click to expand...
Click to collapse
The stock ROM can be installed on the phone at any time. Mostly via ADB / Fastboot tools.

SubwayChamp said:
You still, or I didn´t find, that you mention the model of your device, that´s matter to have the right answer.
Also, it depends on which method you used to flash the ROM, if you officially, flashed the ROM, and the rollback didn´t affect your device, then it won´t do, locking or unlocking it.
Click to expand...
Click to collapse
My phone is Sony Xperia 1 J9110. I flashed it officially to the latest ROM through settings. Then I unlocked the bootloader and flashed the old stock ROM via newflasher. Then I decided to relock the bootloader with old stock ROM installed. Does this mean that I will get my phone bricked if I lock the bootloader with old stock ROM actually installed?

jwoegerbauer said:
The stock ROM can be installed on the phone at any time. Mostly via ADB / Fastboot tools.
Click to expand...
Click to collapse
But can I lock the bootloader with old stock ROM installed?

I saw somewhere that if you lock the bootloader with the old firmware version, you may get brick. But I'm not sure about that.

Why steadily repeat your posts?
FYI: I hereby opt out of this thread.

jwoegerbauer said:
Why steadily repeat your posts?
FYI: I hereby opt out of this thread.
Click to expand...
Click to collapse
Because you answered me

Oybek78 said:
My phone is Sony Xperia 1 J9110. I flashed it officially to the latest ROM through settings. Then I unlocked the bootloader and flashed the old stock ROM via newflasher. Then I decided to relock the bootloader with old stock ROM installed. Does this mean that I will get my phone bricked if I lock the bootloader with old stock ROM actually installed?
Click to expand...
Click to collapse
Yes, always that you flash a stock ROM, you can re-lock it, fastboot will erase the data as a security measurement.