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rollback

Hello, i updated from MM to nougat with firmware finder. It has big battery drain so i flashed old firmware b161 for vns l21
Its same firmware which was on phone before nougat
but now, in updater it shows new version b371, after roll back and full factory reset it now shows new version, why?
thank you

Nikola_98 said:
Hello, i updated from MM to nougat with firmware finder. It has big battery drain so i flashed old firmware b161 for vns l21
Its same firmware which was on phone before nougat
but now, in updater it shows new version b371, after roll back and full factory reset it now shows new version, why?
thank you
Click to expand...
Click to collapse
I updated with the same method and now i cant access software update and huawei id any solution?

try factory reset, if not help ,rollback to mm

Nikola_98 said:
try factory reset, if not help ,rollback to mm
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Click to collapse
I cant get the code for bootloader unlock

Question on how to upgrade official firmware on Rooted device

Hi,
I have rooted P10 Plus L29. Currently, it is on B133 and I want to update to B162. I did some research on how to update and found several methods (Link ).
I used HWOTA method when I update from B131 to B133 but unfortunately the bootloader is locked again after updated. To unlock bootloader, it will wrap all data from the device.
So, I just curious about the other method whether it will lock bootloader or not. Any suggestions on this?

Imho it is not possible to update without relocking bootloader.

Downgrade

How to downgrade S7 Edge From Oreo to Noughat???

Azazlimbu said:
How to downgrade S7 Edge From Oreo to Noughat???
Click to expand...
Click to collapse
Download Nougat or Marsh from sammobile and flash t with Odin, more instructions on sammobile.

downgrade only possible with V2 firmware files, don't flash any firmware build before the january 2018 or you will brick your device .

shah22 said:
downgrade only possible with V2 firmware files, don't flash any firmware build before the january 2018 or you will brick your device .
Click to expand...
Click to collapse
I am new here i dont know what is V2 firmwarefile. Can you explain what is V2 firmware?? Thanks you for advise:fingers-crossed::fingers-crossed::fingers-crossed:

I mean the bootloader version that is written in the firmware name i.e in G935FXXU2DRAG, 2 is the bootloader version of the firmware after U letter and if you are already on version 2 bootloader, you cannot flash a firmware which has 1 in place of 2..

shah22 said:
I mean the bootloader version that is written in the firmware name i.e in G935FXXU2DRAG, 2 is the bootloader version of the firmware after U letter and if you are already on version 2 bootloader, you cannot flash a firmware which has 1 in place of 2..
Click to expand...
Click to collapse
Ok Thanks you bro!!!!:fingers-crossed::good:

This is useful! I tried to downgrade from 8.0 to 7.0 and bricked my device, luckily I could restore the same version I had before... even SmartSwitch don't give a damn about my device anymore.

If you have bootloader version which says XXS2 then you can't downgrade to Marshmallow and initial Nougat firmwares released till December 2017.
However, if you never upgraded your bootloader to v2 (like me), then you can downgrade to even Marshmallow without any issues. Check my phone screenshot. I am running latest Oreo firmware on v1 bootloader without any issues.

AlanDS said:
I am running latest Oreo firmware on v1 bootloader without any issues.
Click to expand...
Click to collapse
How you flash latest Oreo without flasing V2 bootloader? It is possible?

[Firmware] Which firmware should i use to update to emui 5.xx with VNS-L31 C432 B226?

My phone had to be repaired last week, and the Huawei repair service changed everything in the phone except for the backplate.
However, I am now stuck with emui 4.1.2 in firmware VNS-L31 C432 B226, and i can't find a replacement firmware for the system.
The phone shows no update available in stock.
I have TWRP and magisk installed atm, just so i could try and get a different firmware with emui 5.1 or 5.0 at least, which I did to no avail.
Is there any way to find the correct firmware compatible with this phone?
Googling this firmware gives me no clues as to the correct path to updating this phone.
Should i use an adb/fastboot command prompt to update it, or use the dload method, or even the extract the SYSTEM.img from UPDATE.app method?
I just don't want to revert to an "earlier" version of the firmware with the dload method just to have my phone bricked.
These are the firmware i tried already:
[TO BE UPDATED]
TL/DR:
I have a Huawei P9 Lite repaired to a stock:
Firmware: VNS-L31 C432 B226
EMUI: 4.1.2
in Portugal.
I want to know a compatible firmware or series of firmware patches so i can get
Firmware: VNS-L31 C432 Bxxx
EMUI: 5.xx
Thank you for your time.

Hello,
it's strange that with an unbranded european firmware your phone didn't upgraded to android 7....
Anyhow i never done a forced upgrade but if i were you i wil try with HWOTA update, like explained in this thread.
So first make all your necessary backups, then unroot and finally follow the guide to upgrade.
P.S.: If your phone is dual sim try install B370, if single sim try with B371.
All the best

Dadditz said:
Hello,
it's strange that with an unbranded european firmware your phone didn't upgraded to android 7....
Anyhow i never done a forced upgrade but if i were you i wil try with HWOTA update, like explained in this thread.
So first make all your necessary backups, then unroot and finally follow the guide to upgrade.
P.S.: If your phone is dual sim try install B370, if single sim try with B371.
All the best
Click to expand...
Click to collapse
I tried a bunch of firmwares for emui 5.1 that didn't work, or which had NFC and bluetooth not working. I ended up downgrading to B160, and am now reupgrading to B370 after checking that both of the previously mentioned are working properly. I will update on this issue asap.
Also, it seems like the firmware I originally had was updated in march 2018, so it was really an updated official firmware with emui 4.1. What a weird setup. Could it be to make sure the NFC and bluetooth would be working? I just don't know...

sycoforbidden said:
I tried a bunch of firmwares for emui 5.1 that didn't work, or which had NFC and bluetooth not working. I ended up downgrading to B160, and am now reupgrading to B370 after checking that both of the previously mentioned are working properly. I will update on this issue asap.
Also, it seems like the firmware I originally had was updated in march 2018, so it was really an updated official firmware with emui 4.1. What a weird setup. Could it be to make sure the NFC and bluetooth would be working? I just don't know...
Click to expand...
Click to collapse
Yeah, downgrading to B160 should be a good choise..
Use then stock updater to look forward
Regards

Dadditz said:
Yeah, downgrading to B160 should be a good choise..
Use then stock updater to look forward
Regards
Click to expand...
Click to collapse
I did it and it worked, however i flashed the recovery partition of version VNS-L31C432B380 with TWRP and now can't do a OTA update to B388.
Should I extract the recovery img from a b380 FULLOTA update and flash it to my recovery partition with fastboot?

sycoforbidden said:
I did it and it worked, however i flashed the recovery partition of version VNS-L31C432B380 with TWRP and now can't do a OTA update to B388.
Should I extract the recovery img from a b380 FULLOTA update and flash it to my recovery partition with fastboot?
Click to expand...
Click to collapse
Hey,
surely without stock recovery OTA updates won't work,
so yes try flash it with fastboot, then update to the latest/wanted firmware and finally unlock bootloader,
flash custom recovery and root (even if wanted).
Best regards

bootloader unlock Can You Receive Updates via Ota or No?

I am curious about these issues, my question is the following when I unlock my Bootloader I can do an update via OTA when it arrives on my device? Or is my phone going to have Hard Brick?
I want to give a Downgrande on my smartphone but it is still in stock without any modification. And through the tutorials I read ask for the unlock Bootloader. My intention is to only downgrade. A friend of mine gave the following idea: "unlock the bootloader to then downgrade and after it has been successfully done." I search how to lock the bootloader again using CMD to put a system with the bootloader locked and so in the future I will be able to receive updates via Ota. " Does This Worker Ideas In Practice?
This my Frist Post here If I make a mistake, tell me, we will not repeat.:fingers-crossed:

When it comes to being able to receive updates when bl is unlocked, that's a yes, it will work fine and won't affect your phone's functionality.
On the other hand downgrading is generally a bad idea. The problem is, when you update your phone your bootloader also gets an update. All parts of the OS except for the bootloader can be downgraded to a previous version, and if you do that, the downgraded OS can function normally on the newer bootloader.
Now comes the tricky part. If you try to do an OTA on a downgraded OS with a new bootloader, the OTA will treat the bootloader as if it were the old one, and will overwrite parts of it that it shouldn't, which will corrupt it. And there you have a pricey paperweight.
The only way of updating a downgraded device is to flash it clean with a newer version (or the version same as the bootloader).
Now what is the reason you'd want to downgrade?

After Unlocked Bootloader You Can't Get OTA Updated Even You Relock Bootloader ., tested On Moto G5s
Model X1795
However During try to Relock or downgrade Oreo 8.1 to 7.1.1 You May Get Complete Dead Your Phone as my phone goes During downgrade .

Rakesh Mahto said:
After Unlocked Bootloader You Can't Get OTA Updated Even You Relock Bootloader ., tested On Moto G5s
Model X1795
However During try to Relock or downgrade Oreo 8.1 to 7.1.1 You May Get Complete Dead Your Phone as my phone goes During downgrade .
Click to expand...
Click to collapse
My bootloader is unlocked.
I wanted to upgrade to the latest firmware and because I was rooted I flashed the firmware I was on at that moment (no down - or upgrade) again and after that I was able to apply and install every single OTA up to the latest. I could have flashed the latest Oreo firmware directly too but I wanted to test this way and to update by flashing latest firmware would have been possible after that too.
So updating via OTA with an unlocked bootloader was no problem for me.
In the end you get the unlock code from Motorola itself and it would be kind of strange if they won't deliver updates anymore for a feature they provide for their devices.
Sent from my Moto G5 Plus using XDA Labs

Need Android 8.1 Oreo February security Patch 2019
Wolfcity said:
My bootloader is unlocked.
I wanted to upgrade to the latest firmware and because I was rooted I flashed the firmware I was on at that moment (no down - or upgrade) again and after that I was able to apply and install every single OTA up to the latest. I could have flashed the latest Oreo firmware directly too but I wanted to test this way and to update by flashing latest firmware would have been possible after that too.
So updating via OTA with an unlocked bootloader was no problem for me.
In the end you get the unlock code from Motorola itself and it would be kind of strange if they won't deliver updates anymore for a feature they provide for their devices.
Sent from my Moto G5 Plus using XDA Labs
Click to expand...
Click to collapse
Looking For Android 8.1 Oreo February security Patch 2019 For Moto G5s
Model: X1795
Twrp Backup Or Any Other Of Official Rom Of Android 8.1 Oreo , Including February security Patch 2019 Thanks

Rakesh Mahto said:
Looking For Android 8.1 Oreo February security Patch 2019 For Moto G5s
Model: X1795
Twrp Backup Or Any Other Of Official Rom Of Android 8.1 Oreo , Including February security Patch 2019 Thanks
Click to expand...
Click to collapse
This is a thread for potter (Moto G5+) so your question most probably won't be answered here.
Move to https://forum.xda-developers.com/moto-g5s
Sent from my Moto G5 Plus using XDA Labs

I am planning on to unlock bootloader only will I continue recieving official updates from Samsung and able to install them (not flashing that, OTA ones). I am not going to install custom recovery or kernel or even custom rom. Will it work that way?