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After B852 OTA Update: Software bricked ?

Hello Community,
Today I got a strange prob with my huawei ascend p7-l10:
After succeded update to B852 my Phone didnt boot properly. But Fastboot and Recovery works flawless.
Story:
My phone was on Stock firmware B839 (rooted), with unlocked bootloader and TWRP recovery flashed.
Today updated manager prompted: New Update (B852) available. So I flashed the stock recovery for EMUI 3.1 and rebootet my phone, then I installed B852 per OTA and flashed it successfully.
Then After the phone reboot I got the screen: "Optimizing Android Apps". On 71 from 91 Apps (Optimization) I directly got a black screen. I rebootet my phone....
Now the phone hangs directly after the Huawei Boot logo. rebootet... and again blackscreen
After a third reboot Android starts again with Apps Optimizing (but now not 91 Apps, only 80 Apps).
I rebootet more then three times and it didnt work.
I Also tried to wipe cache and dalvik, also tried to factory reset my phone. All without any success
Anyone knows, how I get this fixed ?
Have a nice day and also christmas days
EDIT: Sorry guys, topic can be closed. I solve the problem by myself.
Solution if anybody have similar issues:
1) Flash TWRP
2) Wipe Cache Dalvik and do a factory reset (within TWRP)
3) Flash any custom ROM (example My-Rom)
4) Download B839 (Complete) Firmware from (for example) http://www.huaweiblog.de/
5) create a dir called "dload" on SD-Card and put the UPDATE.APP in there
6) flash stock recovery for EMUI 3.1 (dont forget to activate ADB)
7) In Huawei update manager: do a local update and select the UPDATE.APP
8) After success flash: Boot again into recovery mode - First select Wipe Cache and then select Factory reset
9) Boot into normal android and connect with your WLAN
10) Check for updates and download B852 Firmware thru Huaweis update manager and install it
Optioal (only if root access wanted):
11) flash TWRP recovery again
12) Boot into recovery mode
13) Flash SuperSU zip file in TWRP.
done!! Now B852 (maybe with rooh) works flawless

Can't install TWRP

Hi guys, I currently have the EVA AL-10 version of the P9 and am in the process of installing TWRP on it however I cant get it to boot into TWRP after flashing it. I have tried several key combinations including power and volume up as well as power and both volume buttons but it always boots normally instead of into TWRP.
The phone is currently running android 7.0 stock EMUI, could that be the problem?
Thanks

from what source you instal this twrp ? jeah, there are 2 different terp, one which works only for marshmalow, and other which is for nuget, but twrp for nuget is incomplete.

P9 can't run TWRP

Hi all
Got a P9 EVA-L09 (B378) EMUI 5.0 Andriod 7.0 Noguat , Bootloader unlocked
Downloaded the ROOT_P9 rar package that you can find nearly everywhere on internet, and after rebooting and placing in recovery mode (start / volume up) wont start the custom recovery.

Did you try TWRP for N: https://forum.xda-developers.com/p9/how-to/twrp-3-0-2-0-n-t3506947

Done worked, but i erased the OS for error , reinstalled a new one but it's buggy, no keyboard no bluetooth; now i have a C900B300
thk for the help

Probably hard bricked Honor NEM-L21

Hello everyone,
Yesterday i flashed a file with TWRP which enables google camera on my Honor 5c NEM-L21 and when i rebooted, phone booted into erecovery where i can select only 3 options (1.download latest version and recovery, 2. reboot 3.shutdown) When i tried downloading latest version it failed every time... I can't do anything with my phone, tried factory reseting and wiping with TWRP but problem persists... Tried flashing other firmwares with dload method but every time it fails at 5%... I'm desperate, any help would be appreciated.

santr33 said:
Hello everyone,
Yesterday i flashed a file with TWRP which enables google camera on my Honor 5c NEM-L21 and when i rebooted, phone booted into erecovery where i can select only 3 options (1.download latest version and recovery, 2. reboot 3.shutdown) When i tried downloading latest version it failed every time... I can't do anything with my phone, tried factory reseting and wiping with TWRP but problem persists... Tried flashing other firmwares with dload method but every time it fails at 5%... I'm desperate, any help would be appreciated.
Click to expand...
Click to collapse
Which firmware number did you tried??

Tried to flash twrp. Can't boot into recovery anymore.

Hi i tried to root my P9. I unlocked the bootloader successfully and i can flash the recovery but i can't boot into recovery anymore. I get stuck on "Your device is booting now...". Also i tried to flash twrp onto recovery2 which is often suggested and that didn't help either. What i find weird it that adb doesn't allow me to erase a partition "FAILED: (remote: Command not allowed). Also the phone still works normal and i can use android. I also tried to flash a stock recovery but that still doesn't boot into the recovery. I couldn't find any advice online that would help me further. Hope someone can help me out.

FlxF said:
Hi i tried to root my P9. I unlocked the bootloader successfully and i can flash the recovery but i can't boot into recovery anymore. I get stuck on "Your device is booting now...". Also i tried to flash twrp onto recovery2 which is often suggested and that didn't help either. What i find weird it that adb doesn't allow me to erase a partition "FAILED: (remote: Command not allowed). Also the phone still works normal and i can use android. I also tried to flash a stock recovery but that still doesn't boot into the recovery. I couldn't find any advice online that would help me further. Hope someone can help me out.
Click to expand...
Click to collapse
You probably flashed incorrect TWRP -
you didn't even mention are you on MM (EMUI 4) or N (EMUI 5)
Different TWRP images must be used, but from the corresponding XDA Huawei P9 (MM or N) threads - not something maybe from elswhere on Internet
Also, if it didn't work from Recovery then no chance that it would work from eRecovery (if wrong TWRP, not ported to Huawei P9 and your EMUI version, it will not ecognize partitions and encryption, no matter if flashed to Recovery or eRecovery)
For example, if you didn't spoil also eRecovery, you would be simply able now to (re)Install latest firmware and recovery from eRecovery, and it would fix your stock Recovery
Otherwise, you should flash Recovery and eRecovery (extracted by Huawei Extractor from update.app, unzipped from FullOTA update.zip corresponding to your exact stock firmware and build you have).
Or, reinstall your stock firmware by DLOAD method (FullOTA-MF-PV package must be used for DLOAD)
You can also just flash the correct TWRP (but I strongly recommend to recover the stock eRecovery anyway), find the correct ports for MM, N and O here:
https://forum.xda-developers.com/showpost.php?p=72153575&postcount=2
https://forum.xda-developers.com/showpost.php?p=75787111
https://forum.xda-developers.com/showpost.php?p=77161313&postcount=2
If you are on Nougat, you can also find on XDA (actually, zipped in HWOTA/HWOTA7 packages from links 2 and 3 above) the so-called no-check Recovery, it can replace Recovery (but not eRecovery) img for any EMUI 5 stock firmware)
---
Btw, for Magisk (root), you don't need TWRP. Just install Magisk Manager app and patch your extracted Boot.img (MM and N, on Oreo Ramdisk.img), then flash the patched img from Fastboot

zgfg said:
You probably flashed incorrect TWRP -
you didn't even mention are you on MM (EMUI 4) or N (EMUI 5)
Different TWRP images must be used, but from the corresponding XDA Huawei P9 (MM or N) threads - not something maybe from elswhere on Internet
Click to expand...
Click to collapse
Thanks alot! I was using TWRP img from twrp.me thought it was a offical site. Now i used an image from the forum here and everything works. Thanks alot would have gotten a headache without your help

FlxF said:
Thanks alot! I was using TWRP img from twrp.me thought it was a offical site. Now i used an image from the forum here and everything works. Thanks alot would have gotten a headache without your help
Click to expand...
Click to collapse
TWRP.me (apparently) is the official TWRP site but you can see that they only have one TWRP img file (for each new TWRP release) for Huawei P9 (EVA) - hence they don't care, they are not aware of different organization of partitions (sizes, names and encryption) coming with different EMUI versions.
And from their P9 Changelog (screenshot attached) you can see that last adaptation for P9 was made in May 2016, when P9 had its original Marshmallow (EMUI 4).
Below is XDA thread from 2017 when Nougat (EMUI 5) was released and a guy who ported to (with description of changes he made). TWRP for EMUI 5 I gave you the link in previous answer is based on his port, but made after he stopped maintaining it (he moved off from P9), hence it is still TWRP 3.2.1.0 but with slight change (somebody else fixed/improved I think which partitions are mounted by default and/or what will be erased by Factory reset option - I don't recall details anymore)
https://forum.xda-developers.com/p9/development/twrp-t3565703
Btw, you are not the first who soft-bricked P9 (with Nougat) by installing the 'official' TWRP (you could search here on XDA P9 sub-forum, I recall I similarly helped to two or three of them last year and this year) and who had to move to the proper port from XDA to unbrick - the 'official' TWRP seems to be good only for those who are stuck with Marshmallow / EMUI 4 from 2016 (most likely those who got stuck with the cust c900, 'international' cust at that time, that was never updated by Huawei to Nougat while they introduced new custs for different world regions, countries and operators when they started to sell and support the phone out of China)
It would be fair if TWRP.me at least makes a note on which stock firmware version they test their 'official' P9 releases...