Database Users

Im on C66 how to update on newer firmware version?

So,
My phone is vns-l21c66b131 and is there any way to update to newer versions without rooting and if possible can someone write steps on how to do it?

If you use <SEARCH> you find followings:
<After a few day of reading users personal experiences regarding upgrade to Android 7 Nougat i make the big step myself...
My device is VNS-L21 model and entire process goes flawless...
Device state was stock MM VNS-L21C432B150, bootloader lock, dualsim enabled.
1. Unlock bootloader folowing by Automatic Factory Reset.
2. Flash TWRP
3. From TWRP i flash Meticulus TWRP
4. Reboot to TWRP and flash update.zip and update_data_full_VNS-L31_hw_eu.zip, both flash ends with errors, without reboot between flashes.
5. After that, i reboot device and boot in system ok, start configuration, etc.
6. I reboot to fastboot and flash Nougat Recovery reworked by @BadWolfYe
I am not experienced camera bug, all works fine and i have now a fully functional phone.
BTW, dualsim remain enabled and works both sims.
Thanks to all contributors for these pieces of firmware, first of all to @BadWolfYe!>
For that's is <SEARCH>, not to open another topic for same problem...

Thanks for the reply, but I'm not talking about Nougat, I talk about MM b161 update. How to do it if my carrier is c66 and the newest update there is b131

Coolyou said:
Thanks for the reply, but I'm not talking about Nougat, I talk about MM b161 update. How to do it if my carrier is c66 and the newest update there is b131
Click to expand...
Click to collapse
If you want to stay on C66 you have to wait to OTA updates...
If you make any upgrade via dload folder on sdcard your phone will go from C66 to C900 (global)
Another alternative is to debrand your phone to C432 (hw eu)
For any of this is treated here in some topics...

So I just need to create dload folder and put the zip there?

Coolyou said:
So I just need to create dload folder and put the zip there?
Click to expand...
Click to collapse
Not the zip! Put the update.app wich is in the zip, for this method.
The zip is ok for update from TWRP.

gtdaniel said:
Not the zip! Put the update.app wich is in the zip, for this method.
The zip is ok for update from TWRP.
Click to expand...
Click to collapse
Do i lose warranty if i change to global ?

Rollback NXT-AL10 TO EMUI 6 ?

HI
can anyone help me to rollback my nxt-al10 to emui 6 please

drlsd said:
HI
can anyone help me to rollback my nxt-al10 to emui 6 please
Click to expand...
Click to collapse
Emui 6 ?? or maybe you want to say emui 4 and android 6 ??

Yes ,thank you very much ,i mean emiu 4.1 please

drlsd said:
Yes ,thank you very much ,i mean emiu 4.1 please
Click to expand...
Click to collapse
unlock & flash TWRP recovery & flash another firmware using TWRP
https://forum.xda-developers.com/tools/general/huawei-firmware-finder-team-mt-t3469146

I would like too to rollback my nxt-al10 from emui 5.0 (android 7.0) to emui 4.0 or 4.1.
Now my rom is nrd90m test-keys (AL10).
I read last post and I don't know how to unlock & flash TWRP recovery - before emui 5.0 I use SRKToolHuawei but now SRKTool don't support emui 5.0
Guys pleas help me.

bodzio3333 said:
I would like too to rollback my nxt-al10 from emui 5.0 (android 7.0) to emui 4.0 or 4.1.
Now my rom is nrd90m test-keys (AL10).
I read last post and I don't know how to unlock & flash TWRP recovery - before emui 5.0 I use SRKToolHuawei but now SRKTool don't support emui 5.0
Guys pleas help me.
Click to expand...
Click to collapse
If you're​ on nrd90m test key ,you can simply dload your last EMUI4 or 4.1 rom
Sent from my Huawei Mate 8 using Tapatalk

amin318 said:
If you're​ on nrd90m test key ,you can simply dload your last EMUI4 or 4.1 rom
Sent from my Huawei Mate 8 using Tapatalk
Click to expand...
Click to collapse
I tried with dload method rom NXT-AL10C00B386 and while after boot in update I see that:
Software install failed!
Incomatibility with current version.
Please download the correct update package.
Please help

​
bodzio3333 said:
I tried with dload method rom NXT-AL10C00B386 and while after boot in update I see that:
Software install failed!
Incomatibility with current version.
Please download the correct update package.
Please help
Click to expand...
Click to collapse
Did you change your phone's cust version? If u changed it you should dload a firmware (4/4.1) that match with your new cust
I rolled back with this method dozen times when EMUI 5 was not officiall!
Sent from my Huawei Mate 8 using Tapatalk

amin318 said:
​
Did you change your phone's cust version? If u changed it you should dload a firmware (4/4.1) that match with your new cust
I rolled back with this method dozen times when EMUI 5 was not officiall!
Sent from my Huawei Mate 8 using Tapatalk
Click to expand...
Click to collapse
No. this time my rom was stock I dload NXT-AL10C00B386, lost root and unlock bl and them do OTA to EMUI 5.0.
I realy don't know when I stuck od NRD90M. One time I pull the phone out of my pocket and see red message after reboot... that's all.
Hisute can't help me, I try.
Some advices, please.

bodzio3333 said:
No. this time my rom was stock I dload NXT-AL10C00B386, lost root and unlock bl and them do OTA to EMUI 5.0.
I realy don't know when I stuck od NRD90M. One time I pull the phone out of my pocket and see red message after reboot... that's all.
Hisute can't help me, I try.
Some advices, please.
Click to expand...
Click to collapse
Is that red message verification failed message?
If yes then please unlock the bootloader again even if it says unlocked. Then it will do factory reset and the red message will disappear.
You can then try to flash the stock firmware in TWRP. You can use B368 or B386 stock firmware from another thread and flash in TWRP. That is if you have TWRP. If you don't then unlock bootloader and then install TWRP using SRK tools. You can use SRK tools for adb commands also. Just type 000 on first page off srk tools and you will get into command prompt. Using that push the TWRP into your phone. ADB is very stable in srk tools and it will always identify your device. So that problem you won't have.
I couldn't find a proper rollback for AL10 . May be some one else can give if it is there for this model. If it was L29 model then rollback package is available and you can easily rollback using that in this type of situation.
If the flashing of stock ROM worked then you try to debrand your phone to L29 later. You will have many options then and L29 firmwares are more stable. I have AL10 which I debranded to L29 & I totally recommend debranding to C432 once your problem is solved
Do the above steps only if you are on marshmallow firmware.
Don't forget :good::good::good::good::good:

I created a al10 roll back for all al10 phones. It converts it to a DL0017 dual active sim. Message me for details how to obtain it from me .. MUST have twrp installed .

Samavb said:
Is that red message verification failed message?
If yes then please unlock the bootloader again even if it says unlocked. Then it will do factory reset and the red message will disappear.
You can then try to flash the stock firmware in TWRP. You can use B368 or B386 stock firmware from another thread and flash in TWRP. That is if you have TWRP. If you don't then unlock bootloader and then install TWRP using SRK tools. You can use SRK tools for adb commands also. Just type 000 on first page off srk tools and you will get into command prompt. Using that push the TWRP into your phone. ADB is very stable in srk tools and it will always identify your device. So that problem you won't have.
I couldn't find a proper rollback for AL10 . May be some one else can give if it is there for this model. If it was L29 model then rollback package is available and you can easily rollback using that in this type of situation.
If the flashing of stock ROM worked then you try to debrand your phone to L29 later. You will have many options then and L29 firmwares are more stable. I have AL10 which I debranded to L29 & I totally recommend debranding to C432 once your problem is solved
Do the above steps only if you are on marshmallow firmware.
Don't forget :good::good::good::good::good:
Click to expand...
Click to collapse
Thank you for help
Yes it is red message verification failed message.
I'll change AL10 to L29C432 when I can do that
The bigest problem is that I stuck on androit 7.0 emui 5.0.
So maybe you help me unlock bl (I have unlock code) and flash TWPR....

Unlock bootloader ADB commands + Stock + Debrand
bodzio3333 said:
Thank you for help
Yes it is red message verification failed message.
I'll change AL10 to L29C432 when I can do that
The bigest problem is that I stuck on androit 7.0 emui 5.0.
So maybe you help me unlock bl (I have unlock code) and flash TWPR....
Click to expand...
Click to collapse
If you want to unlock bootloader through ADB?
Here are the steps.
In your phone go to settings - >developer options - > put usb debubbing ON
switch off the phone.
Press and hold the down button for 3 seconds & then connect it to the computer
It will then go to fastboot mode.
then open SRK tools
type 000 to enter the command prompt.
Type the following command
fastboot oem unlock xxxxxxxxxxxxx
In this command xxxxxxxx is your bootloader code. just replace xxxxxxx with your code and press enter.
This will unlock your bootloader & will do a factory reset.
In SRK tools there is an option for bootloader unlock but I think that is only if you are in EMUI 4.0 or EMUI 4.1 that is what I think may be anyone else who tried this option in android 7.0 can confirm but the adb commands will work.
I have enclosed screenshots for better understanding.
you have mentioned that you are in Android 7.0
Can you tell me your exact firmware that you have on your phone at the moment?
After you get rid of that red message. Your bootloader is unlocked.
There is Erecovery process - > steps below (but there is a problem with this process)
1)Switch off the phone.
2) Press and hold the volume up button and then connect your phone to computer or charger. Yes charger. Then you can download stock firmware through your WIFI - > this will also install stock firmware. But I think this won't work because of unlocked bootloader
So once again install the TWRP for Android 7.0 I think it is Twrp 3.0.2 or Twrp 3.0.3 - > this is definitely for nougat.
ADB command to install twrp recovery is
fastboot flash recovery twrp.img ( rename the TWRP to twrp.img ) in the adb.
Try to flash the stock firmware zip files in TWRP.
Here you have two options - > You can either try flashing B386 files (only one zip file) or B562 (android 7.0 - > 2 zip files - first update.zip and then the other zip file)
If you are successful in this step then your TWRP will be overwritten with stock recovery.
That is ok. don't worry. Kangvip ROM is pre-rooted ROM. So you will get root in the end. For now its ok to be on Stock at this step.
Stock Recovery + Stock ROM + bootloader locked -> then you can dload back to EMU 4.1 using B386 firmware.
Then you can unlock bootloader (again) yes its a pain + followed by TWRP + ROOT - one after the other in SRK tools its all there. you can use the options in SRK tools this time.
And once you have root again.
Take backup and save it on your SD card. (except DATA , take backup of all options listed there, why? bcoz if you include data - > it will increase the backup size and it will take more time.
*Disclaimer* -> Very tricky & risky process - proceed with caution & full attention
Then - > you can debrand - > to C432 -(debranding is very tricky process, so keep your backup handy) This should be done very carefully because any problem here means you might find less space on your internal memory. Then you will have to restore that backup to get back your space.
Here is the link to excellent tutorial by somboons Watch it carefully.
https://www.youtube.com/watch?v=JZVsIKtdgV4
Just follow that as it is for debranding from AL10 to L29-C432
I am very very sorry for all these confusing and tricky steps. Please proceed with caution when you are doing the debranding process. Do not get diverted during that process.
Yes I did all this when I debranded my Huawei Mate 8 AL10 to L29. I had lot of anxious moments, doubts & my mind started playing tricks if mate 8 was dead on few occassions. But in the end my phone prevailed. Now I am happily using L29 - Kangvip B577. That is where I want you to land up in the end.
Do not worry and do not panic any time. Be prepared to face few challenges during this process. I will help you but please share your experience and follow the steps carefully.
During debranding you might have your phone rebooting or something might happen. That time do factory reset and continue from where you left off. If you get red message - > then you have to unlock bootloader. Otherwise continue.
This whole process will test your patience & consume time. So I hope you are willing to do this. Its worth it. I learnt my lesson, I am never buying chinese version of Huawei phones/tablets again. Only European models from now onwards.
Finally
Do not forget to click on :good::good::good::good::good::good::good:
I hope you understand.

I stared few hours ago.
First unlock bl - red message disapire
After bl I was error durind format bus system run witout any problem.
Then flash TWRP 3.1.0-2 and try to flash NXT-AL10C00B368-update.zip but I see this:
http://gofile.me/6tsPr/sHOJ4cLcr
http://gofile.me/6tsPr/cXniG4g8D
Some advices?

Options
bodzio3333 said:
I stared few hours ago.
First unlock bl - red message disapire
After bl I was error durind format bus system run witout any problem.
Then flash TWRP 3.1.0-2 and try to flash NXT-AL10C00B368-update.zip but I see this:
http://gofile.me/6tsPr/sHOJ4cLcr
http://gofile.me/6tsPr/cXniG4g8D
Some advices?
Click to expand...
Click to collapse
TWRP 3.1.0.2 is actually used for flashing nougat firmwares.
Which firmware are you on right now?
Are you on nougat or marshmallow? Please provide the full firmware build number.
if your phone is on marshmallow.
TWRP version depends on your firmware.
If you are on EMUI 4.0/4.1 then pls use the TWRP 3.0.2
you can use SRK tools to install that TWRP if you are on EMUI 4.0/EMUI 4.1
Install that version. Then
Factory reset
Flash the B386 zip file in TWRP.
You can get the B386 from here https://forum.xda-developers.com/showpost.php?p=69331930&postcount=1338
If your phone is on Android Nougat.
Then you have to use dload method.
Unzip the B386 zip file.
Put the update.app in the dload folder inside your external sdcard.
Go to your dialer
*#*#2846579#*#*
Select "software upgrade"
then Select - > SD card upgrade.
And then it will reboot and install the stock firmware.
This thread has all the Stock firmwares.
https://forum.xda-developers.com/mate-8/general/huawei-mate-8-stock-firmware-official-t3391727
Hope the above steps solve your problem. If not, then we will try something else. please answer all the questions to help you better especially your full build number (firmware version).
:good::good::good::good::good:

Thank you
I'm on emui 5,0 android 7,0 nugat ROM nrd90m test-keys - before I don't remember, upgrade ota for AL10 model. Maybe AL10C00B552.
So I have to try flash nugat ROM AL10 by TWRP 3.1.0.2.
Dload method dont work - I never need sd card for this.
Can I flash nugat rom dload method? And where I find stock recovery for nugat?

TWRP & Erecovery methods
bodzio3333 said:
Thank you
I'm on emui 5,0 android 7,0 nugat ROM nrd90m test-keys - before I don't remember, upgrade ota for AL10 model. Maybe AL10C00B552.
So I have to try flash nugat ROM AL10 by TWRP 3.1.0.2.
Dload method dont work - I never need sd card for this.
Can I flash nugat rom dload method? And where I find stock recovery for nugat?
Click to expand...
Click to collapse
Since you are on nougat with test keys, try to flash the latest nougat firmware on your phone model NXT-AL10 (Try flashing firmwares using TWRP )
Link for the firmware
link 1 https://mega.nz/#!Y4IVEbxY!7C8u3FP3V8eAV4jVNmbRUfj2W1nc8p5gMtaScVmzeA0
if the link 1 doesn't work then try link 2
link 2 https://mega.nz/#!U9ZkTZzI!fbPnyDIxCGGFkiGxtF3SMicLqmTDNTq8SG8fVw8lfz8
download & flash it using TWRP.
Once you finish flashing - you should have android nougat stock B584
Go to settings - > about you should see that B584. in build number.
If your build number is showing anything other than test-keys then you will be able to use dload method or Hisuite method using PC.
Now if IT IS showing B584, then you can dload to B386. then unlock bootloader -> TWRP using SRK tools - > Root - > and then debrand to L29C432. - > this is the road map for you. we will go through this only after you succeed in the above steps.
Try the below steps only if the above steps don't work
if you want to flash the nougat recovery
then unzip the zip file in link 1.
Use Huawei update extractor software HuaweiUpdateExtractor_0.9.9.3
and then extract the recovery.img from the update.app file.
now
switch on usb debugging in your settings.
switch off the phone
press & hold volume down and then connect to phone to laptop
put the extracted recovery.img file in the same folder as the SRK tools
open SRK tools
type 000 to enter command prompt
type fastboot flash recovery recovery.img
(please remember all these steps that use adb commands come with element of risk. so please proceed with caution and go slow. Proceed with these steps only if you know what you are doing otherwise do not proceed)
Try the TWRP steps first and see if that will resolve your issue before flashing any stock recovery. If your flashing through TWRP then it will install stock recovery & stock ROM.
Please share your progress.
:good::good:

Samavb said:
Since you are on nougat with test keys, try to flash the latest nougat firmware on your phone model NXT-AL10 (Try flashing firmwares using TWRP )
Link for the firmware
link 1 https://mega.nz/#!Y4IVEbxY!7C8u3FP3V8eAV4jVNmbRUfj2W1nc8p5gMtaScVmzeA0
if the link 1 doesn't work then try link 2
link 2 https://mega.nz/#!U9ZkTZzI!fbPnyDIxCGGFkiGxtF3SMicLqmTDNTq8SG8fVw8lfz8
download & flash it using TWRP.
Once you finish flashing - you should have android nougat stock B584
Click to expand...
Click to collapse
You must know that I'm very grateful for your help
Do I have to format data before start flashing B584.zip or do nothing?
Do I need update_data_full_all_cn.zip ?

2 Answers
bodzio3333 said:
You must know that I'm very grateful for your help
Do I have to format data before start flashing B584.zip or do nothing?
Do I need update_data_full_all_cn.zip ?
Click to expand...
Click to collapse
Glad to read Ur kind words but V have a long road ahead. So let's fix ur phone :good:
Answers
1) Yes, you can format DATA before flashing this zip file. you can also do factory reset before flashing the zip file. (Remember we are doing this step only to get ur phone out of that test keys & this firmware is not ur final firmware that u will use. )
2) I was searching for a firmware that u can flash on ur phone and I found B584 and felt this might help. The guys in the other thread mentioned it as full firmware. After u flash this firmware, check in settings - > about - > build number if it is anything else other than test keys then u succeeded in this step.
Goal of this flashing of B584 is only to get rid of that test keys in build number. Once that is gone then U can downgrade to B386 using steps in my previous posts followed by the road map.
:good::good::good:

Samavb said:
Glad to read Ur kind words but V have a long road ahead. So let's fix ur phone :good:
Answers
1) Yes, you can format DATA before flashing this zip file. you can also do factory reset before flashing the zip file. (Remember we are doing this step only to get ur phone out of that test keys & this firmware is not ur final firmware that u will use. )
2) I was searching for a firmware that u can flash on ur phone and I found B584 and felt this might help. The guys in the other thread mentioned it as full firmware. After u flash this firmware, check in settings - > about - > build number if it is anything else other than test keys then u succeeded in this step.
Goal of this flashing of B584 is only to get rid of that test keys in build number. Once that is gone then U can downgrade to B386 using steps in my previous posts followed by the road map.
:good::good::good:
Click to expand...
Click to collapse
When I flash B584.zip see this error in twrp:
Failed to mount '/cust' (invalid argument)
Failed to mount '/version' (invalid argument)
E:unknown command [errno]
E:unknown command [errno]
Update process ended with ERROR: 7
No good.....

Debranding p9 lite

How can I debrand my phone ? I mean going from C02 to C432 ?
Can anyone point out the steps needed ?
Thanks

bunilla said:
How can I debrand my phone ? I mean going from C02 to C432 ?
Can anyone point out the steps needed ?
Thanks
Click to expand...
Click to collapse
Unlock bootloader + TWRP + root + flash oeminfo of C432 + repair firmware via dload folder.

gtdaniel said:
Unlock bootloader + TWRP + root + flash oeminfo of C432 + repair firmware via dload folder.
Click to expand...
Click to collapse
which option in the toolkit should be pressed to put Oeminfo,upgrade button or individual?

gtdaniel said:
Unlock bootloader + TWRP + root + flash oeminfo of C432 + repair firmware via dload folder.
Click to expand...
Click to collapse
I have L31 and I want to debrand it from C440 to C432. I did some research, but still I have some questions.
1. Unlock bootloader + TWRP + root - I found this https://forum.xda-developers.com/huawei-p9lite/how-to/guide-unlock-bootloader-twrp-root-t3405701
It's ok right ?
2. Flash oeminfo of C432 and this should be done by SRKTool and oeminfo I found there https://forum.xda-developers.com/hu...nt/europe-vns-l31-toolkit-bootloader-t3432873
3. repair firmware via dload folder - Unfortunately I don't know how to do it. In the instructions for p9, it was done also in SRKTools using "Install Recovery 6.0", but there P9Lite is not mentioned, how should I do ?
4. Install new ROM - I should install new ROM for c432, right ? It's using 3 button method ?
And that's all ?

smackedRico said:
I have L31 and I want to debrand it from C440 to C432. I did some research, but still I have some questions.
3. repair firmware via dload folder - Unfortunately I don't know how to do it. In the instructions for p9, it was done also in SRKTools using "Install Recovery 6.0", but there P9Lite is not mentioned, how should I do ?
4. Install new ROM - I should install new ROM for c432, right ? It's using 3 button method ?
And that's all ?
Click to expand...
Click to collapse
Regarding <3. repair firmware via dload folder>, you have to download stock firmware for C432 (B130/131 or B160/161 - depends what oeminfo you flash),
unzip update.app and copied on dload folder on microsdcard. Power off and power on with 3 key combination and repair start...
At the end you have a brand new C432B1XX phone...

gtdaniel said:
Regarding <3. repair firmware via dload folder>, you have to download stock firmware for C432 (B130/131 or B160/161 - depends what oeminfo you flash),
unzip update.app and copied on dload folder on microsdcard. Power off and power on with 3 key combination and repair start...
At the end you have a brand new C432B1XX phone...
Click to expand...
Click to collapse
And the bootloader should be locked, right ?

smackedRico said:
And the bootloader should be locked, right ?
Click to expand...
Click to collapse
Indeed, you lose bootloader unlock, twrp and root (if you have).

If now I have c440B160, and I place oeminfo for c432 do i have to install c432b160 or I can install c432b131, because I only found that version

I installed TWRP and Root, and now I don't know how to change oeminfo, because in srk is only p9,not p9 lite, and I downloaded package .zip and tried to install it by TWRP but it didn't work. How should i do this ?

Ministry of solutions has a full tutorial, I used it and it worked flawlessly
Sent from my HUAWEI VNS-L21 using Tapatalk

Ok, thank. That worked. But now I try to update phone by using firmware finder. It finds me a lot of versions and I downloaded the newest b381 full ota, and it failed, because something was wrong in that package

What u debranded to?
Sent from my HUAWEI VNS-L21 using Tapatalk

Now i have c432b160, at least it sey so. I used the ministry of solutions oeminfo and rom.

Now I use firmware finder to find new versions, and it finds me a lot of them so I send b381 full ota to updater, it downloads, and then reboots, but it find verification error. How to fix it, i want to update to emui 5.0. Now I have C432B160

smackedRico said:
I have L31 and I want to debrand it from C440 to C432. I did some research, but still I have some questions.
1. Unlock bootloader + TWRP + root - I found this https://forum.xda-developers.com/huawei-p9lite/how-to/guide-unlock-bootloader-twrp-root-t3405701
It's ok right ?
2. Flash oeminfo of C432 and this should be done by SRKTool and oeminfo I found there https://forum.xda-developers.com/hu...nt/europe-vns-l31-toolkit-bootloader-t3432873
3. repair firmware via dload folder - Unfortunately I don't know how to do it. In the instructions for p9, it was done also in SRKTools using "Install Recovery 6.0", but there P9Lite is not mentioned, how should I do ?
4. Install new ROM - I should install new ROM for c432, right ? It's using 3 button method ?
And that's all ?
Click to expand...
Click to collapse
Do not debrand to c432 in srktool hope you didnt do it in srktool the c432 i only for normal P9 i once misd flashed it and i got vns-c432b160 i didnt have l21 or 31 nor anything and it was a pain in the a s s to fix

Update from B161 to Nougat - Once again

Hi Guys.
Maybe somebody can help here:
I am on B161 and get the OTA Update for B371 - but only the 2.5GB version! And with this update, bluetooth and many more things don't work.
What can I do to Upgrade to nougat? Which Version should I use? How to upgrade correctly?
I don't get the full B371 Upgrade option in the system. And when i Install the B371 Image from Firmware Finder (VNS-L31C432B371 FullOTA-MF-PV) its not working either...
PLEASE help, Nougat has a much better Ram Usage und battery life then MM on my P9 Lite 2GB Variant.....
Thanks!

Better wait.
Nougat has battery drain.

Johnny TDN said:
Better wait.
Nougat has battery drain.
Click to expand...
Click to collapse
But the thing is -> i have the Update available to B371 but it is only the 2,5gb version and i'm thinking will this update be replaced with another one or am i stuck on this update the system wants to give me...

If your phone is stock and update is available via System Updater, go for it!
You have nothing to lose...

gtdaniel said:
If your phone is stock and update is available via System Updater, go for it!
You have nothing to lose...
Click to expand...
Click to collapse
I was on B371 before but had the issue with bluetooth not working etc. Then i did the rollback package and afterwards went back to B161 - so i suppose its not really stock?
I'm just thinking - now i am on B161 and B371 Update is visible for me - but only the 2.5GB variant - and i don't want to update and have the same issues and again do the rollback and loose all my data?
Also i don't really now what it means exactly to be on "Stock" rom - because i think B161 is the actual Stock rom for now?
EDIT: Also i See i have the Firmware VNS-L31 but my Model is actually VNS-L21 so thats weird too.

e-coder said:
I was on B371 before but had the issue with bluetooth not working etc. Then i did the rollback package and afterwards went back to B161 - so i suppose its not really stock?
I'm just thinking - now i am on B161 and B371 Update is visible for me - but only the 2.5GB variant - and i don't want to update and have the same issues and again do the rollback and loose all my data?
Also i don't really now what it means exactly to be on "Stock" rom - because i think B161 is the actual Stock rom for now?
EDIT: Also i See i have the Firmware VNS-L31 but my Model is actually VNS-L21 so thats weird too.
Click to expand...
Click to collapse
Stock phone means unaltered phone (firmware official, bootloader lock, stock recovery etc)
If you have VNS-L31 firmware on VNS-L21 phone is not ok... So your phone is altered...

gtdaniel said:
Stock phone means unaltered phone (firmware official, bootloader lock, stock recovery etc)
If you have VNS-L31 firmware on VNS-L21 phone is not ok... So your phone is altered...
Click to expand...
Click to collapse
Ok Thanks!
I tried the update now and as supposed it is the update with the nrdm900 test-key
what would be best to do? do the rollback to vns-l21c432b161 and wait? i think this firmware version would be stock?

e-coder said:
Ok Thanks!
I tried the update now and as supposed it is the update with the nrdm900 test-key
what would be best to do? do the rollback to vns-l21c432b161 and wait? i think this firmware version would be stock?
Click to expand...
Click to collapse
First of all you have to bring your phone on stock condition (VNS-L21C432B131).
After that you have to apply a B161 official update.
And from there, with Firmware Finder you go to B371.

gtdaniel said:
First of all you have to bring your phone on stock condition (VNS-L21C432B131).
After that you have to apply a B161 official update.
And from there, with Firmware Finder you go to B371.
Click to expand...
Click to collapse
Ok i Will update to the rollback package. After that i will update to B131. Do you have a link for that?
EDIT: Found the Link here http://firmware.smartphonewp.com/do...irmware-version-b131-android-6-0-marshmallow/
And when i am on B131 can I Update via system Updater to b161 ?

e-coder said:
Ok i Will update to the rollback package. After that i will update to B131. Do you have a link for that?
EDIT: Found the Link here http://firmware.smartphonewp.com/do...irmware-version-b131-android-6-0-marshmallow/
And when i am on B131 can I Update via system Updater to b161 ?
Click to expand...
Click to collapse
http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1164/g104/v54896/f1/full/update.zip

gtdaniel said:
http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1164/g104/v54896/f1/full/update.zip
Click to expand...
Click to collapse
Thanks man! you're great!
And when B131 is installed will i get B161 via system update?

e-coder said:
Thanks man! you're great!
And when B131 is installed will i get B161 via system update?
Click to expand...
Click to collapse
Yes, that it should be if everything works fine.

gtdaniel said:
Yes, that it should be if everything works fine.
Click to expand...
Click to collapse
lol ok i did the rollback with the rollback package which obviously only changes the oeminfo to VNS-L31C900B300 (as mentioned in another post to rollback from Nougat to MM)
Now when I try to Install the B131 Package with dload method it says the firmware doesnt fit. The build is not correct for this device
EDIT: i try now to install it via Firmware Finder, lets see if theres better luck with that - Or should I ? The update has only 1,5GB - that confuses me Allthough i selected the FULL OTA

e-coder said:
lol ok i did the rollback with the rollback package which obviously only changes the oeminfo to VNS-L31C900B300 (as mentioned in another post to rollback from Nougat to MM)
Now when I try to Install the B131 Package with dload method it says the firmware doesnt fit. The build is not correct for this device
EDIT: i try now to install it via Firmware Finder, lets see if theres better luck with that - Or should I ? The update has only 1,5GB - that confuses me Allthough i selected the FULL OTA
Click to expand...
Click to collapse
Man, you are in twilight zone if your VNS-L21 phone have VNS-L31 firmware...
I said earlier: First of all you have to bring your phone on stock condition (VNS-L21C432B131).
That you have to do first!

gtdaniel said:
Man, you are in twilight zone if your VNS-L21 phone have VNS-L31 firmware...
I said earlier: First of all you have to bring your phone on stock condition (VNS-L21C432B131).
That you have to do first!
Click to expand...
Click to collapse
Man I tried Tried to do the upgrade via dload method - doesnt work. I tried to install B131 via Firmware Finder - didnt work he cant do it - while verifying the update package switches a few times from 0 to 1 % and after some times he says the package is corrupt.
Can I go just higher than B371 to get everything working again?
Or flash back to B131 with some TWRP or something like that?
Or maybe try to flash the B371 with firmware finder again? That version where it says FullOTA-MF-PV (whatever PV means)

If i was you, i do following:
- first, i make sure if my phone is VNS-L21 (very important!)
- put in dload folder on microsdcard, update.app from B161 firmware: http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1164/g104/v66051/f1/full/update.zip
- flash via twrp oeminfo from this link: https://mega.nz/#!Egl01ZpJ!g1K9xV2yZ4oyoBKxFMOWgghTTUzqLUBoBeXkUboCi-A
- start phone with 3 keys combination and let firmware to repair itself.

gtdaniel said:
If i was you, i do following:
- first, i make sure if my phone is VNS-L21 (very important!)
- put in dload folder on microsdcard, update.app from B161 firmware: http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1164/g104/v66051/f1/full/update.zip
- flash via twrp oeminfo from this link: https://mega.nz/#!Egl01ZpJ!g1K9xV2yZ4oyoBKxFMOWgghTTUzqLUBoBeXkUboCi-A
- start phone with 3 keys combination and let firmware to repair itself.
Click to expand...
Click to collapse
thats what i try - to get back to vns-l21 but no image worked so far .... i will try to update to vns-l21c432b160 firmware with firmware finder maybe that'll work...
what is in this oeminfo file and is there another way to flash it without twrp?

e-coder said:
thats what i try - to get back to vns-l21 but no image worked so far .... i will try to update to vns-l21c432b160 firmware with firmware finder maybe that'll work...
what is in this oeminfo file and is there another way to flash it without twrp?
Click to expand...
Click to collapse
Nope, oeminfo must be flashed via twrp or via some tools (for that is need root).
In that oeminfo file is stock oeminfo for installing VNS-L21C432B161 firmware.

gtdaniel said:
Nope, oeminfo must be flashed via twrp or via some tools (for that is need root).
In that oeminfo file is stock oeminfo for installing VNS-L21C432B161 firmware.
Click to expand...
Click to collapse
Hm okay, so the first problem needs to be solved first - i am in VNS-L31C900B300 now - how can i get back to SOME VNS-L21 image....? as said i tried to dload the B131 Image you gave me the link for but it didnt work to update.
Right now i am trying to install VNS-L21C432B371 FullOTA-MF-PV from FF.... EDIT: Ok that does not work either

e-coder said:
Hm okay, so the first problem needs to be solved first - i am in VNS-L31C900B300 now - how can i get back to SOME VNS-L21 image....? as said i tried to dload the B131 Image you gave me the link for but it didnt work to update.
Right now i am trying to install VNS-L21C432B371 FullOTA-MF-PV from FF....
Click to expand...
Click to collapse
Ok... Good luck, but from my experience i think you can not do something right until you flash oeminfo right for your device...

C900b170 can't change

My device is p9 lite vns l31( c636) before i used elite roam v7.6. but now i want to go back stock roam. To go back i used roall back mm and c636b170 full ota. But now my devise build number is c900b170. I want to upgrade nauget c636. Please help me.

rathnayakepr3 said:
My device is p9 lite vns l31( c636) before i used elite roam v7.6. but now i want to go back stock roam. To go back i used roall back mm and c636b170 full ota. But now my devise build number is c900b170. I want to upgrade nauget c636. Please help me.
Click to expand...
Click to collapse
Hello man,
did you removed prevoius update.app from SD card, the one from rollback??
Maybe you forgot to do this...
If you sure you done all things right then take a look at the UNIFIED HELP THREAD...
At 6th post you'll find a L31 rollback package that will give you C900B300 global firmware.
From this flash C636B170 full ota and see if worked this time....
https://forum.xda-developers.com/huawei-p9lite/how-to/unified-help-thread-huawei-p9-lite-t3649152

Dadditz said:
Hello man,
did you removed prevoius update.app from SD card, the one from rollback??
Maybe you forgot to do this...
If you sure you done all things right then take a look at the UNIFIED HELP THREAD...
At 6th post you'll find a L31 rollback package that will give you C900B300 global firmware.
From this flash C636B170 full ota and see if worked this time....
https://forum.xda-developers.com/huawei-p9lite/how-to/unified-help-thread-huawei-p9-lite-t3649152
Click to expand...
Click to collapse
.
But i donnt know how to flash oem info and custom bin through the toolkit. Please help me.

rathnayakepr3 said:
.
But i donnt know how to flash oem info and custom bin through the toolkit. Please help me.
Click to expand...
Click to collapse
Hello dude,
in the guide i never readed to use the toolkit, that's another way i think...
Flashing the rollback package will bring you c900b300 firmware wich means global intermediate transitive firmware...
Create a dload folder in SD card, extract update.app from rollback package and put in it.
Turn off you phone. Now disconnect from PC, and let it start keeping vol+ vol- and power buttons.
When it ends turn it off and remove the SD card and the update.app from dload folder.
Download and extract update.app from L31C636B170 full update.
If you missed it...
http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1164/g104/v66846/f1/full/update.zip
Put this in dload folder in SD card again and put in your phone...
Repeat vol+ vol- power buttons and it will flash...
Recommended: when finished reboot to e_recovery (vol+ power buttons) and factory reset.
If all gone well you will stay now on marshmallow firmware..
Wish you the best my friend...:fingers-crossed:
Edit: flash the rollpack package suggested in prevoius post.
All credits goes to @dariomrk and other contributors that create the thread.
Thank you guys.