Downgrade B571 to LP - Ascend Mate 7 Q&A, Help & Troubleshooting

Hi all,
i've read many post but unfortunaly i didn't find a solution.
My mate 7 (MT7-L09) have many issues with GPS (i've to reboot to have GPS work).
So i want to downgrade to LP.
i've tested the rollback package from huawei's official site, but it failed always in 5% (force update with 3 buttons method, update.app in dload folder)
Have you got a simple solution ?
the only solution i've seen :
- unlock bootloader
- flash twrp recovery
- root MM
- flash a lollipop twrp backup (i've seen on another post xda)
but it's hard to do this ! and there are many risk ...
Did anyone succeed ? with a rollback package ?
my vendor is : hw / eu
thanks !

did you try downgrade from b571 to b331 in this link https://forum.xda-developers.com/mate-7/general/huawei-mt7-l09-l10-stock-firmware-ota-t3275784
or the root method?

the only method in this post (for the b571) needs to be root i search a "soft" method before to try unlock bootloader / recovery / root / reinstall twrp backup (i don't know if this method works ,too)

Related

wRONG UPDATE L02 -> L04

Hello there,
i wrongly updated my honor6 - L02 with a rom L04. EMUI 2.5... Works if i can say but i don't have the sim mamangement application whatsoever!
I try now to apply full rom B310 ( for L02 ) but it cannot...
What can i do ? it seems usb is not working anymore on my laptop
am i bricked ?
thanks
Is there a way to downgrad e ???
I had the L04 ROM on my L12. You can fully restore it via fastboot and revert package. You can find the guide here: http://forum.xda-developers.com/showpost.php?p=57274153&postcount=1 and scroll down to
3 Button Restore not working (If you change between variant example L02>L12) Or Partition been changes and cannot restore back Stock version. Use this steps below : -
The revert packages etc. are available on this thread too. I you understand german you can follow the link in the post to the german how to
Yeah it worked !
Many thanks

[Guide] how to update mate 7 without getting error in recovery {update failed}

This guide is for all those who are getting error while updating their mate 7 manually either by local update option or by 3 buttons combo option.
here we go: ( for eg. consider mt7-tl10 model imternation version currently on any firmware and you want to install b123 firmware )
1. Extract recovery from new update.app to be installed i.e. b123 firmware.
2. flash it in fastboot mode.
3. now try to update using any of the option either local update or 3 buttons, it will run smoothly and you are done.
basically first we have to install recovery of the new version we want to install.
same can be followed to easily update to lollipop firmware.
hope this might help someone
Thanks - I was wondering what I was doing wrong since I can't update anymore either OTA, or local update or three fingers method, I constantly get the message "software update failed" and I am stuck with KingUser.apk ...
Can I ask I few more questions (I have changed ROMs in other mobile phones but not on the Mate 7)...
1) Do I need to unlock my bootloader to flash anything (I assume yes, my phone is still unlocked) ?
2) Do I need to use the Huawei Extractor (this one: http://forum.xda-developers.com/showthread.php?t=2433454)?
3) The name of the recovery is recovery.img (I guess so)?
Thanks a lot,
Paolo
Anubis1965 said:
Thanks - I was wondering what I was doing wrong since I can't update anymore either OTA, or local update or three fingers method, I constantly get the message "software update failed" and I am stuck with KingUser.apk ...
Can I ask I few more questions (I have changed ROMs in other mobile phones but not on the Mate 7)...
1) Do I need to unlock my bootloader to flash anything (I assume yes, my phone is still unlocked) ?
2) Do I need to use the Huawei Extractor (this one: http://forum.xda-developers.com/showthread.php?t=2433454)?
3) The name of the recovery is recovery.img (I guess so)?
Thanks a lot,
Paolo
Click to expand...
Click to collapse
1. Yes bootloader needs to be unlocked .
2. Yes, huawei extractor is required.
3. Yes it is recovery.img. You have to flash it in fastboot mode

Downgrade to lollipop or update .

Hello all , in short words i am using b512 6.0 update .
Very slow update even in performance option . , force close , unstable keyboard .
I need any way to solve these problems .
- unlocked bootloader .
- rooted by kingroot .
- stock recovery .
.
I need help , PC is available .
ksa_android said:
Hello all , in short words i am using b512 6.0 update .
Very slow update even in performance option . , force close , unstable keyboard .
I need any way to solve these problems .
- unlocked bootloader .
- rooted by kingroot .
- stock recovery .
.
I need help , PC is available .
Click to expand...
Click to collapse
Download latest firmware(b560 or b571 depending on which region you have and you have Asian for you it's b560) update.app to your sd card and update it.
if it's not try force update by putting update.app to sd card and then turn off your device remove data cable and then press volume both and power until Huawei logon show after 5 or 10 second it'll flash rom you download.
or if you want to downgrade you have to download rollback 6.0 to 5.1 package and flash it by putting file in sd card and update basically its not update but downgrade to 5.1..
Hi , thanks for answering , i try each region update and everything is failing .
Thy tried ways is force update as you mention and by the code from the dialer .
(before the trying to update ) I dont know if the bootloader is unlocked or not but i root my phone then unistall it , then try to unlock it by adb .
Do you think if i relock the bootloader i will be able to upstate / downgrade it ?
ksa_android said:
Hi , thanks for answering , i try each region update and everything is failing .
Thy tried ways is force update as you mention and by the code from the dialer .
(before the trying to update ) I dont know if the bootloader is unlocked or not but i root my phone then unistall it , then try to unlock it by adb .
Do you think if i relock the bootloader i will be able to upstate / downgrade it ?
Click to expand...
Click to collapse
Update or downgrade doesn't need bootloarder lock or unlock
if you want to flash custom recovery like twrp to root or flash custom rom then it's compulsory to have unlock bootloarder.
what exactly you want to do if you want to downgrade it have different method and if you want to update then make sure you have unlocked bootloarder by pressing vol- and power it'll show lock or unlock it's doesn't matter for downgrade to have lock bootloarder you should download exact firmware for device I also have same region mate 7 tl10 Huawei make lengthy process to update steps by steps if you are on b512 you should download b560 for your device try this to have some easy step for unlock bootloarder recovery,root
https://forum.xda-developers.com/mate-8/development/tool-srk-tool-huawei-t3369797
hope it'll help you further help please ask...

Don't getting update to B560 again

My Mate 8 L29 is currently on C432B192 again. I said 'again', because I was already three or four times on EMUI 5. (I tried to root it but it failed Everytime, so I had to rollback)
Yesterday I wanted to try again to root B560 and began to search for the update, but - nothing. I tried it via update app , HiCare app and HiSuite on PC. I don't get the update offered. (I also deleted data and cache of those apps)
I'm currently rooted, so I tried to unroot, install stock boot image and recovery .. but same problem: still not getting the update.
Now I'm wondering why this is happening .. I had that same case before (B192, rooted etc.) and I always got that update offered.
Does anyone have a solution for this ? ( Except the manually method via TWRP .. this was never working for me)
Thank you for your help!
Hello everyone ...
I was trying to root my mate 8 next+L29c185b560 ... And I did with twrp
But I lost all huawie apps like hw care and backup and a lot ... And there is no keyboard and Bluetooth not working ... How can I get my phone to his original state ??? Without root without twrp but with all functions ??? Can any one guide me ?
Rollback from Huawei Mate 8 - Nougat to Stock
kingyourii said:
Hello everyone ...
I was trying to root my mate 8 next+L29c185b560 ... And I did with twrp
But I lost all huawie apps like hw care and backup and a lot ... And there is no keyboard and Bluetooth not working ... How can I get my phone to his original state ??? Without root without twrp but with all functions ??? Can any one guide me ?
Click to expand...
Click to collapse
You need rollback package to get it back to normal.
Since your model is L29 & you are nougat.
Go to this site http://consumer.huawei.com/sg/support/products/downloads/detail/mate-8-sg.htm?id=91647
Download the file
Extract the update.app
Make a folder on your sdcard and name it as dload
put this update.app in that sdcard
now you do the dload method
you can do it two ways
one way is
the 3 finger rule while bootup
just press volume + volume - power button together and hold until you see EMUI verifying package
then release your fingers
it will rollback to marshmallow
now you have to update it to another stock firmware (marshmallow)
remember at this point it is in global firmware it might show build number as C900 or something.
you can check it in the settings - about -> build number
you have to then update it to your model firmware
L29C185BXX
I found the stock firmware from another thread for your model
This is L29C185B200
http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1076/g104/v65326/f1/full/update.zip
once again
download the file,
extract the update.app &
then put the update.app in dload folder on your sdcard
and then do dload method.
second way of dload is
open dialer
type *#*#2846579#*#*
click on "software upgrade"
and then -> SDcard upgrade
follow the instructions on the screen
and it will finish the dload method in next few minutes.
That's it. now you will be on Stock ROM with fully functional OS.
after this you will either get OTA updates or you can download using HiCare
or you can download the stock firmware from another thread
or
you can use firmware finder to get stock firmware for your phone. Get the latest version.
If you finish all these steps then I will tell you how to get to nougat if you have any trouble
Hope you find this information useful.
Lot of effort goes into typing these posts. Please don't forget to click on :good::good::good::good::good: for my posts.
---------- Post added 29th April 2017 at 12:11 AM ---------- Previous post was 28th April 2017 at 11:27 PM ----------
Calvin1997 said:
My Mate 8 L29 is currently on C432B192 again. I said 'again', because I was already three or four times on EMUI 5. (I tried to root it but it failed Everytime, so I had to rollback)
Yesterday I wanted to try again to root B560 and began to search for the update, but - nothing. I tried it via update app , HiCare app and HiSuite on PC. I don't get the update offered. (I also deleted data and cache of those apps)
I'm currently rooted, so I tried to unroot, install stock boot image and recovery .. but same problem: still not getting the update.
Now I'm wondering why this is happening .. I had that same case before (B192, rooted etc.) and I always got that update offered.
Does anyone have a solution for this ? ( Except the manually method via TWRP .. this was never working for me)
Thank you for your help!
Click to expand...
Click to collapse
You are rooted & if I read correctly you also have TWRP installed.
If you are unlocked, rooted & have TWRP - then you can install custom roms.
but if you want stock roms, - you need Stock ROM, Stock Recovery, Locked bootloader.
First you need the rollback package from EMUI4.1 to EMI 4.0 for L29C432 is below
https://www.hidrive.strato.com/lnk/0mlDFqqy
Rollback package for L29 to downgrade from EMUI 5.0 to EMUI 4.0 marshmallow is
http://consumer.huawei.com/sg/support/products/downloads/detail/mate-8-sg.htm?id=91647
So choose the right version based on the firmware you are having on your phone. If you have nougat choose the second link and if you have any other version then choose the first link.
Download the file, extract the update.app
then you have to do dload method
create a folder named dload and put update.app in sd card
then
go to dialer
press *#*#2846579#*#*
select
sdcard upgrade
and then say yes
that's it
you will come back to stock (global) version. build version will be C900BXX
now you need stock firmware for L29C432
you can download the stock firmware from here. Below tis the link for L29C432B180
http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1076/g104/v51244/f1/full/update.zip
Stock firmware for L29C432B192
http://update.hicloud.com:8180/TDS/data/files/p3/s15/G1076/g104/v63059/f1/full/update.zip
Here you have the option to either go for L29C432B180 or L29C432B192. (if you choose B192, then you will save time and reduce few steps, because you will get system update to B560 immediately once you change the region to Ireland in Hicare app)
do the dload method again
extract the file, put the file in dload folder in sdcard ,
either use dialer or use 3 button rule to finish the dload process
now you are on L29C432B180. / L29C432B192
From here you can use another dload method to go to B192 - > system update (OTA) -> B560 or B580
if you get a blank screen - > do factory reset
if you get "verification failed " in red color - > unlock bootloader again and proceed with the steps.
This rollback package will save you in case of any problems.
Once you go to nougat B560
you can update to Kangvip B577 - pre rooted rom - its awesome - Root stable , excellent battery lfie. - everything is working perfectly.
I will give you those steps and links if you succeed in getting to B560 after all these steps.
I am sorry that this is a very long post and many steps but I can assure you that it is worth.
Ultimately you will get to nougat & with full root using Kangvip B577.
Hope you succeed
Lot of effort goes into typing these posts. Please don't forget to click on :good::good::good::good::good: for my posts. it encourages me to help more and answer more Qs

Update method without problems to any version [explain]

Hello ..
In this topic I will explain a simplified, how to be the latest version and the latest system update.
••••••••
Here many found updates his phone but you get or find problems such as loss of some basic applications or not working Bluetooth and other problems.
^^^^^
Through this experiential explanation your phone will be updated to the latest version with simple steps without any problems.
~~~~~
Requirements
Twrp
Unlocked bootloder
~~~~~~~~
| Make a backup by hisuite to save and retrieve your files if you want
«Download the system file or update + update_data full through Firmware finder
«Now move files to SD
- Open to Twrb and Wipe System and cache and data
- install update then do not run restart set up update data
- Restart the system.
(No problems encountered, system is fast, I have not lost any apps, version number is correct in settings)
0 • The way you are at Android M or N 0 •
... used Google translate ...
http://imgur.com/a/DrtEh
http://imgur.com/a/lU8Fy
Thx for the info :good:
@albelushi7 @rafitcu
Hi guys, just one question please
How is battery life on b390 - better than in b386?
Tecalote said:
@[email protected]
Hi guys, just one question please
How is battery life on b390 - better than in b386?
Click to expand...
Click to collapse
Well nothing noticeable for me, but certainly no problems with battery life. I still easily get through a day with single full charge, without enabling any power saver modes.
Tecalote said:
@albelushi7 @rafitcu
Hi guys, just one question please
How is battery life on b390 - better than in b386?
Click to expand...
Click to collapse
Same answer @rafitcu .
The battery is pretty good and no noticeable difference between 390, 386 For me ?.
Tecalote said:
@rafitcu
Hi guys, just one question please
How is battery life on b390 - better than in b386?
Click to expand...
Click to collapse
I am in the b387, I have not installed the b 390, basically because in the EVA-L09 you can not. My response to op was sarcasm
Hi,
See here: https://forum.xda-developers.com/p9/help/upgrade-to-b390-c432-t3662783
It fails in TWRP when I try to flash update.zip (B182, B383, B390). I have an assert.
Any ideas on how to fix this ?
Thanks !
XavierP56 said:
Hi,
See here: https://forum.xda-developers.com/p9/help/upgrade-to-b390-c432-t3662783
It fails in TWRP when I try to flash update.zip (B182, B383, B390). I have an assert.
Any ideas on how to fix this ?
Thanks !
Click to expand...
Click to collapse
Download M.M , from Huawei website .
Install use method 3 Buttons ..
After that, follow the explanation above.
Hi,
Can you provide me with more details ? What do you mean by Download M.M, from Huawei Website ?
Do you mean download the B136 firmware or the RollBack package like here : http://www.carbontesla.com/2016/11/downgrade-rollback-huawei-p9-nougat-to-marshmallow-europe/
So:
1/ Using fastboot, reinstall recovery from B386 instead of TWRP
12 Rollback package using the +/- button method (dload folder in sdcard)
2/ Reinstall TWRP
3/ Explanation above : Flash B390 using TWRP.
Is that right ? Thanks !
Arrghhh... Took the Huawei Rollback package, using 3 button : Now in C900B300.
But I can NOT install using 3 button method either B136 (MM) or B390 (MM). Update fails. Same error with TWRP.
Only B386 can install.
Neither can B136, B182, B383, B390 whatever method (3 buttons, TWRP 3.1.1-OpenKirin)
What's wrong with my phone ????
Anyone knows Best way to change from L09C432 to L19C636?
My phone was L19C20 and i unbrand it to european L09C432
And now i want to revert to L19C636 (asia)
Sent from my EVA-L09 using XDA-Developers Legacy app
XavierP56 said:
Hi,
Can you provide me with more details ? What do you mean by Download M.M, from Huawei Website ?
Do you mean download the B136 firmware or the RollBack package like here : http://www.carbontesla.com/2016/11/downgrade-rollback-huawei-p9-nougat-to-marshmallow-europe/
So:
1/ Using fastboot, reinstall recovery from B386 instead of TWRP
12 Rollback package using the +/- button method (dload folder in sdcard)
2/ Reinstall TWRP
3/ Explanation above : Flash B390 using TWRP.
Is that right ? Thanks !
Click to expand...
Click to collapse
No ,the rollback Do not work at all times, and I mean download Android marshmallow 6 look here http://consumer.huawei.com/np/support/downloads/detail/index.htm?id=93652&key4=P9 because this update work by 3 Buttons I have tried a lot and this is the only one that works
without problems and then follow the explanation above
Don't forget install stock recovery using fastboot .
XavierP56 said:
Arrghhh... Took the Huawei Rollback package, using 3 button : Now in C900B300.
But I can NOT install using 3 button method either B136 (MM) or B390 (MM). Update fails. Same error with TWRP.
Only B386 can install.
Neither can B136, B182, B383, B390 whatever method (3 buttons, TWRP 3.1.1-OpenKirin)
What's wrong with my phone ????
Click to expand...
Click to collapse
-Install stock recovery
- install this update http://consumer.huawei.com/np/support/downloads/detail/index.htm?id=93652&key4=P9
- install TWRP and Follow the explanation or the way above.
Hi,
Done that. But when I flash a rom (whatever method), I have an error. Corrupted phone I think...
XavierP56 said:
Hi,
Done that. But when I flash a rom (whatever method), I have an error. Corrupted phone I think...
Click to expand...
Click to collapse
Install stock recovery and download http://consumer.huawei.com/np/support/downloads/detail/index.htm?id=93652&key4=P9
Create a file dload in SD card and move file Update.app in dload .
Use method 3 Buttons To install.
After that if you need update to nougat Use the method you explained.
Good day, I have a Huawei P9 light, I hard reset it now, I set the language , the terms of use and when get to connect to a network(wifi required) it doesn't give a keyboard to type the password only Google voice and that doesn't work,can one help
[email protected] said:
Good day, I have a Huawei P9 light, I hard reset it now, I set the language , the terms of use and when get to connect to a network(wifi required) it doesn't give a keyboard to type the password only Google voice and that doesn't work,can one help
Click to expand...
Click to collapse
This is forum for P9, not for P9 Lite - different phone, hardware, firmwares

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