Hi! I tried to downgrade my P8 Lite (DUAL) from ALE-L21C432B574 firmware (West European), Android 6.0 and emui 4.0, to Android 5.1, emui 3.1.
The downgrade failed and after restart, the device have emui 4, android 6.0 but firmware ALE-L21C432B132 that, normally, is for android 5 and emui 3.1. Now, as result (I think this is the reason), I cant to update neither downgrade, in any way my device: I'm stuck in this situation ...
Any idea about how can I do to solve?
Thanks in advance for any advice.
No one can help??? I'm desperate :crying::crying::crying:
milt983 said:
Hi! I tried to downgrade my P8 Lite (DUAL) from ALE-L21C432B574 firmware (West European), Android 6.0 and emui 4.0, to Android 5.1, emui 3.1.
The downgrade failed and after restart, the device have emui 4, android 6.0 but firmware ALE-L21C432B132 that, normally, is for android 5 and emui 3.1. Now, as result (I think this is the reason), I cant to update neither downgrade, in any way my device: I'm stuck in this situation ...
Any idea about how can I do to solve?
Thanks in advance for any advice.
No one can help??? I'm desperate :crying::crying::crying:
Click to expand...
Click to collapse
From stock recovery wipe data factory reset and wipe cache(this will delete all data from phone,so make a backup before),putt phone in fastboot/rescue mod an flash again b132,reboot phone,now use this vendor (extract and rename folder to dload,copy to memory phone and make local update),when is done,use this ota update (extract,and putt update.zip in folder dload and make local update),now your phone should have build number Ale-L21C432B170,and for android 6.0 just make a local update with this
cristi.blidariu said:
From stock recovery wipe data factory reset and wipe cache(this will delete all data from phone,so make a backup before),putt phone in fastboot/rescue mod an flash again b132,reboot phone,now use this vendor (extract and rename folder to dload,copy to memory phone and make local update),when is done,use this ota update (extract,and putt update.zip in folder dload and make local update),now your phone should have build number Ale-L21C432B170,and for android 6.0 just make a local update with this
Click to expand...
Click to collapse
Many thanks for your guide! I will apply your advices and will report the result.
Also, I would like to ask something that makes me worry a little, why the Nandroid restore has not restored everything exactly as before?
milt983 said:
Many thanks for your guide! I will apply your advices and will report the result.
Also, I would like to ask something that makes me worry a little, why the Nandroid restore has not restored everything exactly as before?
Click to expand...
Click to collapse
Before restore,wipe all,then restore your backup
cristi.blidariu said:
... putt phone in fastboot/rescue mod an flash again b132 ...
Click to expand...
Click to collapse
At this point, what B132 I have to flash? I have this: ALE-L21 C432B132 Europe channel Dual but inside is the update.app (in dload folder). I presume that you mean a zip file, maybe a OTA?
milt983 said:
At this point, what B132 I have to flash? I have this: ALE-L21 C432B132 Europe channel Dual but inside is the update.app (in dload folder). I presume that you mean a zip file, maybe a OTA?
Click to expand...
Click to collapse
You must extract from update.app using huawei update extractor and extract files:boot,recovery,cust and systems then flash by using fastboot commands
cristi.blidariu said:
You must extract from update.app using huawei update extractor and extract files:boot,recovery,cust and systems then flash by using fastboot commands
Click to expand...
Click to collapse
I wiped the system and cache from stock recovery, extract the files from update.app, flash them in fastboot&rescue mode and reboot, but the device stops at the boot loop...
milt983 said:
I wiped the system and cache from stock recovery, extract the files from update.app, flash them in fastboot&rescue mode and reboot, but the device stops at the boot loop...
Click to expand...
Click to collapse
Try again,and If is not work,then try with Ale-l21C432B170,flash files with fastboot
cristi.blidariu said:
Try again,and If is not work,then try with Ale-l21C432B170,flash files with fastboot
Click to expand...
Click to collapse
Ok, I will. Thanks
Let me ask you something, please: for downgrade from android 6.0 to 5.0, do you know if can I use the transition firmware ALE-L21C900B500 (I will start from ALE-L21C432B574)?
milt983 said:
Ok, I will. Thanks
Let me ask you something, please: for downgrade from android 6.0 to 5.0, do you know if can I use the transition firmware ALE-L21C900B500 (I will start from ALE-L21C432B574)?
Click to expand...
Click to collapse
you can give a try,that is a rollback package created by huawei so it might work
cristi.blidariu said:
you can give a try,that is a rollback package created by huawei so it might work
Click to expand...
Click to collapse
Ok, I did the downgrade with the Huawei official procedure . Many thanks for the help.
Hello everybody,I have a question :
My P9 Lite (VNS-L31 C432B380)is asking me for B388 update.
I rooted my phone using OldDroid's TWRP 3.1.1-1,and official TWRP.
I know i need the stock recovery to be able to install update from settings.So,i googled a bit,and impossible to find the B380 firmware (my Idea was to extract the recovery from it using Huawei extractor).Then i remembered Firmware finder,and I looked for the B380 inside the App.There I see 2 entries for B380,OTA-MF (290MB) and FULL-OTA-MF (1,6GB).
From which one Can i extract the stock recovery safely with Huawei extractor ?
Thanks in advance !
P.S : if there's others ways to update than unrooting,reflashing stock recovery,installing update and then reroot,please tell me !
EinderJam said:
Hello everybody,I have a question :
My P9 Lite (VNS-L31 C432B380)is asking me for B388 update.
I rooted my phone using OldDroid's TWRP 3.1.1-1,and official TWRP.
I know i need the stock recovery to be able to install update from settings.So,i googled a bit,and impossible to find the B380 firmware (my Idea was to extract the recovery from it using Huawei extractor).Then i remembered Firmware finder,and I looked for the B380 inside the App.There I see 2 entries for B380,OTA-MF (290MB) and FULL-OTA-MF (1,6GB).
From which one Can i extract the stock recovery safely with Huawei extractor ?
Thanks in advance !
P.S : if there's others ways to update than unrooting,reflashing stock recovery,installing update and then reroot,please tell me !
Click to expand...
Click to collapse
The way I did it is by downloading the FULL update (it's 2go) an update extractor(found in this forum) extracting the recovery from the update app... Flashing it using adb... Updating normally (make a save of the 2go update and remember the directory just in case to avoid having to dl it again) the reflash twrp and root!!
Sent from my HUAWEI VNS-L31 using Tapatalk
The biggest package I can found on FF is 1.601GB where did you find your 2Go one ?
EDIT : downloading the fullOTA-mf package gave me a 2.51GB update.app file. update extractor sees recovery.img and recovery2.img,which one do I have to take ?
Hello,
I found out that i need two update.app since EMUI 5. How do i use the dload method to return to stock EMUI when i'm on a custom ROM?
I have an update.zip with an update.app inside and an WAS-L21_hw_eu/update_WAS-L21_hw_eu.zip and there is also an update.app inside.
Could anyone give me a step by step instruction how to do this?
Thanks in advance
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.
I have already unlocked and rooted my vns-l31, installed c185b360 also installed revolution recovery
I received an OTA update through system update B392
I downloaded it through system update
It's 3 zip files in Hwouc folder in sd card:
Update.zip
Update_data_full_public.zip
Update_full_vns-l31_hw_meafnaf.zip
What should I do?
It enters revolution recovery and it doesn't install the image and returns error
Should I try 3button method? And how to flash all the 3 zip files
Help me please
Thanks
Hello @thefarhad,
sorry if i write this but "it seems" you already know what you should do,
also it does not seem possible that update has arrived that way,
i mean official updates automatically installs..
It seems instead that you have downloaded it with Firmware Finder (full OTA-MF), isn't it ?
(If i'm wrong please just not consider this post...)
Now try to follow guide "how to update" you find here on XDA.. (use search, there is more than one).
My little suggestion: proceed by little steps like installing B380 first, then check if official one arrive, if not install B392 with FF.
P.S.: Read threads more than one time before doing anything, just in case something could escape you... only a friendly suggestion..
Regards