Database Develop

Failed downgrade from Nougat to MM bricked my EVA-L09

Recently I tried out the Nougat preview on my EVA-L09C636. It was ok but seeing as there was a problem with fonts and I'd lost root access, I began thinking about going back to MM.
To prepare for downgrade I tried using srktool to bring TWRP back (and I think this is my big mistake as srktool uses a TWRP made for MM, not N, is that right?). After I tried to restore TWRP I noticed "not recognised" errors when I connected my phone to PC again.
System recovery using hajuuk's Firmware Updater and HiSuite looked like it would complete but near the end of the process (the restoring system part) HiSuite aborted itself saying my device wasn't supported. This has left my P9 is in an unusable state where the only thing I can access is fastboot. Also I can't turn off my phone - holding down power simply makes it reboot then get stuck at the "Your device ... can't be trusted / Your device is booting now" screen.
Reading around a bit I attempted to unbrick it without any luck:
1. downloaded EVA-L09C636B152 update.zip from http://forum.xda-developers.com/p9/development/rom-stock-rom-eva-l19c636b168-t3419586 and installed Snoop05's 15 seconds ADB Installer.
2. extracted images from update.zip using Huawei Update Extractor and did
Code:
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash cust cust.img
then tried rebooting holding volume up + power several times (but never got past untrusted device boot screen).
3. extracted contents of update.zip to folder 'dload' on a blank sd card, trying to force update several times by rebooting and holding down power + volume up + volume down (still never get past the screen saying my device is booting).
At this point I'd be happy to get anything happening on my phone - Marshmallow, Nougat or even some other ROM so I can use my device again.
Any ideas? I'm on EVA-L09 C636.

i2ectcf said:
Recently I tried out the Nougat preview on my EVA-L09C636. It was ok but seeing as there was a problem with fonts and I'd lost root access, I began thinking about going back to MM.
To prepare for downgrade I tried using srktool to bring TWRP back (and I think this is my big mistake as srktool uses a TWRP made for MM, not N, is that right?). After I tried to restore TWRP I noticed "not recognised" errors when I connected my phone to PC again.
System recovery using hajuuk's Firmware Updater and HiSuite looked like it would complete but near the end of the process (the restoring system part) HiSuite aborted itself saying my device wasn't supported. This has left my P9 is in an unusable state where the only thing I can access is fastboot. Also I can't turn off my phone - holding down power simply makes it reboot then get stuck at the "Your device ... can't be trusted / Your device is booting now" screen.
Reading around a bit I attempted to unbrick it without any luck:
1. downloaded EVA-L09C636B152 update.zip from http://forum.xda-developers.com/p9/development/rom-stock-rom-eva-l19c636b168-t3419586 and installed Snoop05's 15 seconds ADB Installer.
2. extracted images from update.zip using Huawei Update Extractor and did then tried rebooting holding volume up + power several times (but never got past untrusted device boot screen).
3. extracted contents of update.zip to folder 'dload' on a blank sd card, trying to force update several times by rebooting and holding down power + volume up + volume down (still never get past the screen saying my device is booting).
At this point I'd be happy to get anything happening on my phone - Marshmallow, Nougat or even some other ROM so I can use my device again.
Any ideas? I'm on EVA-L09 C636.
Click to expand...
Click to collapse
did you wiped data, cache, dalvik?

snapdesign said:
did you wiped data, cache, dalvik?
Click to expand...
Click to collapse
Hi! I'm not sure how to wipe data, cache or dalvik, because when I upgraded to Nougat this apparently removed TWRP.
Also I'm wondering if trying to use srktool to reinstall TWRP for 6.0 might have corrupted my 7.0 phone?
Is there any way to wipe data, cache, and/or dalvik now? Or are there other things I could try to unbrick?

Although my phone was in a pretty bizarre state - it would get hot and sit on the booting now screen until battery died - I was able to use DC Phoenix to make it boot up again. At that point it had no themes and only KitKat-esque icons. A reset and upgrade later icons and themes work and I'm back on stock Marshmallow. Here's an outline:
1. Google "Huawei Bricked phone repair guide with DC Phoenix", go to the first result and look at the instructions (I can't post URLs yet).
I used Method 1. But note! The newer versions of DC Phoenix are missing a feature that the instructions make clear you have to use. To get the original version used in their guide, you have to download the latest version of DC Phoenix, open it on your PC, then click "Enter Support Area" which logs you in to a download section. Find "DC Unlocker Softwares", "DC_Phoenix", then download DC_Phoenix_v14.rar and run that instead. Whether it's Method 1 or 2 make sure you complete it - i.e. the fastboot flash step AND a step they call "flashing in upgrade mode."
(Also note that for DC Phoenix you want to feed it the oldest version of firmware available for your phone, in my case b152. This is because themes and icons won't be fixed until it receives the next version of firmware as an update.)
2. Once I did the fastboot and upgrade flash, I did a system reset from the Settings app trying to get themes and current icons again. (This didn't work but doesn't do any harm or might have helped somehow further down the line).
3. I used hajuuk's Firmware Updater and HiSuite to upgrade to the next version of firmware available (in my case b168).
3. All fine and your phone is back to stock - icons look nice again and local themes are back. To get the original icons layout, go to Recents, hold down on the Trash Icon, show system apps, and Clear Data for Huawei Home.

i2ectcf said:
Although my phone was in a pretty bizarre state - it would get hot and sit on the booting now screen until battery died - I was able to use DC Phoenix to make it boot up again. At that point it had no themes and only KitKat-esque icons. A reset and upgrade later icons and themes work and I'm back on stock Marshmallow.
Click to expand...
Click to collapse
Thanks for sharing! You saved me!

P9-L09/19 touch screen doesn't work in eRecovery or TWRP

Hi,
I must admit that I am panicking now because looks like i have bricked my phone and no matter what i try to do i am stuck between erecovery fastboot and TWRP.
To give you some light as to what actually happen... I've replaced oeminfo in originally EVA-AL-10 with EVA-l09. I have installed full system EVA-L09C432B136 and everything was fine at that point.
I thought to myself that it would be nice before putting any data to the phone to actually rebrand it to L19 so i do get a dual sim support.
In another thread I've found oem info for L19-C432. I've replaced it and decided to reflash full image EVAL19-C432B161 which i've also found on this forum due to huawei servers being down? (for some reason I couldn't download anything from the manufacture sources) This is when i got a first error message that updated failed due to incompatibility with the device.
I have been looking for some other full packages but whichever one I've put on a SD card, i couldn't get to work. for some stupid reason i thought about updating B136 hoping that during update process incompatibility issue will get fixed. Unfortunately this wasn't the case and even though the update completed "successfully" on the screen, after the reboot, i ended up in eRecovery.
Having oeminfo in SRK tools which worked for me previously i unlocked bootloader again and installed TWRP so i can root my phone and use srk to update OEM info back to 09.
This is where serious problems started to happen. in TWRP I am unable to use touch screen, only volume buttons and power button to confirm. As its a first launch of the TWRK I cannot even swipe to confirm read/write mode hence I can't go any further to install supersu etc...
Do you have any suggestions what can I do to unbrick it? Is there any workaround to get root via sd card? or maybe forcing somehow stock rom L09C432B136 to install regardless? Maybe there is a way to repack update.app so i doesn't look at the oeminfo?
I have tried replacing images (CUST, BOOT, RECOVERY and SYSTEM) in fastboot mode but I am not having any luck whatsoever.
Please throw me any ideas...
Thanks.

Hi azgooon,
I'm having the same problem, even it's a different huawei phone, did you get your problem fixed? How? Thanks for sharing.
douyi

I think I've bricked the Huawei P9

I have a European Huawei P9 EVA-L09 model which I adore. It was running Marshmallow and EMUI 4.1. I found a Nougat beta ROM and I tried to install it but have left it in an unusable state.
I don't think the phone is rooted but I do think the bootloader is unlocked.
I can boot into 3 modes.
Mode 1 - Just reboot
Huawei eRecovery where I get the options to download latest version and recovery, Reboot and Shutdown. If I select the Download latest version and recovery it setups my Wifi and then fails with the message Getting package info failed.
Mode 2 - Power + Vol Up
It boots into a screen that gives me the option to Reboot your System Now, Wipe data / factory Reset , Wipe Cache partition. Selecting Wipe Data/Factory reset returns back to this screen with an error - Red Exclamation mark. Selecting Wipe Cache partition seems to perform a wipe and returns to the original screen with the 3 options again.
Mode 3 - Connect to PC with Hisense and power + vol down
This goes into an android recovery screen which is white with a green android displayed
I have the USB drivers installed on my PC but I cannot see the phone in Windows explorer when I plug it in via USB. I do hear the recognition tone that Windows has recognised that a USB device has been attached. The Huawei PC software doesn't recognise it unless I go into the white android screen and select recover. This always fails saying it cannot find a package.
I have installed stock P9 Marshmallow firmware on my SD card in a dload folder (which is how I bricked it in the first place. When I hold Vol up and Vol Down and power it starts installing but then fails about 40% - 50% through. I have tried multiple versions of the L09 firmware but none of them install successfully.
I am not very technical and not an android expert so cannot say I have done everything perfectly correctly. #
Is my phone bricked or is it possible get my phone back working?

You can get your phone back, search the forums for dc phoenix, which has helped people including myself.
The other option is to go the huawei website, and look under downloads for p9. Find the two firmwares for beta rollback and follow the instructions, although i am not 100% confident that will work for you

use dc phoneix ... i was the in tha same condition

So I have installed and tried install a few different ROMs to the phone. DC Phoenix recognizes the phone as it comes up with the IMEI and version in the left hand window. It seems to install the ROM sucessfully.
I get a message at the end saying it finished successfully but when I boot back up it just goes straight into the same eRecovery screen I have tried B166 and B322 and no luck. Is there anything different I should be doing?

...and now I have a new issue
Thanks for everyone's help. After downloading and trying about 10 different ROMs I was able to get a Nougat ROM to install. Now I have a different problem
1. When I reboot I get a verification failed message. I get an option to go to eRecovery (which works the same as above and doesn't find a package)
So what I really want now is just to get back to stock Marshmallow and not have a verification message and not have some Nougat version that doesn't look like the official Huawei ROM.
So what next folks?

I encountered the exact same problem a few days ago. I didn't try DC Phoenix, instead sent it to Huawei for repair, claiming the phone was in a boot-loop I couldn't recover from.
They have fixed it now and the P9 is on its way back to me. What's strange is that they have swapped the whole motherboard for a new one! Didn't expect that.

HUAWEI P9 EVA L19 Nougat: /Data partition corrupted or damaged

Hello,
I am previously a Sony Xperia user. Rooting is not my first time. However, since i got a Hauwei P9 (EVA L19), I messed up with the rooting process and thereby acquired such issues with the phone.
History:
I accidentally used a SRK tool by some thai developer for huawei. I didn't realize it was only for MM versions. I followed the instructions there and managed to unlock my bootloader. However, during the installation of the TWRP, it replied some error so I read some more articles and found the right version for it which is the 3.1.0. So, I was able to install TWRP using fastboot. After that, since i can't get my phone rooted, i tried several ways (which so badly i couldn't remember, sorry) but still it's not successful. I then decided to flash back the stock ROM for B386 (latest nougat OTA) via fastboot. I flashed the BOOT, SYSTEM and RECOVERY. So far it went well, but the time it booted, i realized my stock apps like Camera, themes, Alarm clock were missing! so i panicked and tried to reboot many times. I also wiped cache/dalvik but to no avail. Then i decided to wipe everything including the system and boot. There it messaged from the TWRP "No OS" something. so again, I flashed B386. It flashed but again my stock apps were missing. the same result when flashed with B361 and B381. It seems like my settings remain intact and unchanged no matter how i flash the stock firmwares.
the next time i flashed a firmware, it says "data partition is seriously damaged... restore to factory setting..." i did reset it but still it doesnt make any change. So now i realize that my security settings are fcked up too. I cant open the developer options to enable usb debugging. I cant open the security tab under advanced setttings. Theyre all just gonna exit after tapping on them.
Question:
Would it be possible that my data partition is corrupted? because no matter how i install firmware, it always goes back to its "original setting" (no stock camera, themes etc etc)
is there a way to recreate the data partition? wipe all of its contents so i can rewrite from stock firmware? it seems like the system wont let me write over it.
Present status:
So far, the phone is okay with calls, txts and games (i need to download apps from playstore as i cant install backups since i cannot enable "install from unknown sources" in security setting. I can access the cam via messenger or any app. wifi and bluetooth still works.
but i really really want to get back the stock apps like the camera.
please help. im really running our of idea here. any comment would be highly appreciated.
Thanks!

Go to this thread:
https://www.google.it/amp/s/forum.x...i-p9-eva-l19-android-7-0-nougat-t3532649/amp/
Download both files and flash them either via TWRP or dload.
Dload:
1. Put your sd card in your computer and create a folder in the root of the sd card called dload
2.unzip the archive. You will find some files
3. Copy the file called UPDATE.APP into the dload folder
4. Put the sdcard back in your phone and turn it of.
5. Hold volume up, volume down and power at the same time. The phone should boot and install the firmware.
6. Repeate the steps with the other zip file
TWRP
1. Copy both zip files on your phone
2. Turn of your phone
3. Hold volume up and power. You should boot into TWRP
4. Press install and select your file, when finished install the other one to
5. The device should boot
If this didn't work try to rollback to marshmallow via dload and then update to nougat over OTA.

_Frostplexx_ said:
Go to this thread:
https://www.google.it/amp/s/forum.x...i-p9-eva-l19-android-7-0-nougat-t3532649/amp/
Download both files and flash them either via TWRP or dload.
Dload:
1. Put your sd card in your computer and create a folder in the root of the sd card called dload
2.unzip the archive. You will find some files
3. Copy the file called UPDATE.APP into the dload folder
4. Put the sdcard back in your phone and turn it of.
5. Hold volume up, volume down and power at the same time. The phone should boot and install the firmware.
6. Repeate the steps with the other zip file
TWRP
1. Copy both zip files on your phone
2. Turn of your phone
3. Hold volume up and power. You should boot into TWRP
4. Press install and select your file, when finished install the other one to
5. The device should boot
If this didn't work try to rollback to marshmallow via dload and then update to nougat over OTA.
Click to expand...
Click to collapse
I tried this but it didnt work. do you have any other solution?

The dload / 3 Button method doesn't work any more. Here is what worked for me:
For anyone pretty much, who has ****ed up his Huawei P9:
I got to the state where I could only enter Fastboot mode (Press vol- and connect power cable). When I tried to start the phone / go into recovery it would only display the "Your device has been unlocked and can't be trusted" Message. My mistake was to relock the bootloader in an attempt to get the recovery to work.
I looked for hours for the answer, here is what worked for me:
follow this tutorial (the "update firmware" part)
German
English
But with real precision, every step.
If you have a european unbranded L09 you should be fine using the firmware you can find on this site:
https://thedroidguru.com/download-install-huawei-p9-b394-nougat-update-europe/
if not you gotta find the full firmware (3 files!!) yourself - good luck!
If you only want to go back to stock you should be fine afterwards.
If you want to install twrp for root/custom rom/... follow these steps after installing twrp with the tool:
Upon flashing TWRP, FIRST THING YOU MUST DO is rebooting to TWRP. If you don't do that, stock Recovery will ovewrite TWRP.
Find instructions in the TWRP threads how to enforce immediate booting to TWRP, upon you flashed it:
-Type on the PC: fastboot reboot -but don't press Enter yet.
-Press and keep pressing Vol+ and Power buttons together on the phone
-Press Enter on the PC and then immediately unplug USB cabel.
-When phone shows Booting, release Power but keep pressing Vol+. button
Hope this helps, I don't take responsability for anything, happy flashing!

Nooby Paul said:
The dload / 3 Button method doesn't work any more. Here is what worked for me:
For anyone pretty much, who has ****ed up his Huawei P9:
I got to the state where I could only enter Fastboot mode (Press vol- and connect power cable). When I tried to start the phone / go into recovery it would only display the "Your device has been unlocked and can't be trusted" Message. My mistake was to relock the bootloader in an attempt to get the recovery to work.
I looked for hours for the answer, here is what worked for me:
follow this tutorial (the "update firmware" part)
German
English
But with real precision, every step.
If you have a european unbranded L09 you should be fine using the firmware you can find on this site:
https://thedroidguru.com/download-install-huawei-p9-b394-nougat-update-europe/
if not you gotta find the full firmware (3 files!!) yourself - good luck!
If you only want to go back to stock you should be fine afterwards.
If you want to install twrp for root/custom rom/... follow these steps after installing twrp with the tool:
Upon flashing TWRP, FIRST THING YOU MUST DO is rebooting to TWRP. If you don't do that, stock Recovery will ovewrite TWRP.
Find instructions in the TWRP threads how to enforce immediate booting to TWRP, upon you flashed it:
-Type on the PC: fastboot reboot -but don't press Enter yet.
-Press and keep pressing Vol+ and Power buttons together on the phone
-Press Enter on the PC and then immediately unplug USB cabel.
-When phone shows Booting, release Power but keep pressing Vol+. button
Hope this helps, I don't take responsability for anything, happy flashing!
Click to expand...
Click to collapse
DLOAD does not work for half a year, ie since Huawei stopped releasing FullOTA-MF-PV builds (it worked only for them)
Here, on XDA there are two proven guides for recovering Nougat (not just for EU c432 but for all custs, not only for P9 L09 but also for L19, L29) - just search for them: HWOTA7, HuRUpdater
PS: You have crossposted the same to several threads

Data Partition always destroyed after turning off phone

Hello there.
I have a Huawei P9 (EVA-L09) with an unlocked bootloader and a custom ROM.
Since a few days I started experiencing something completely weird.
Every time I happen to turn off my phone (often only because the phone had gotten quite warm and I want it to cool down then) I then land in the boot animation and get stuck there. After forcefully rebooting the phone from there (about half of an hour) I held the Volume Up key for three seconds during the warning screen and eRecovery told me about the Data Partition to be badly damaged and it would be recommended to recover it.
There are two ways I can do from here (and also did):
First way is to let it recover using eRecovery, connect to my wireless connection, however the phone always tells me that there was a problem getting the package info for my phone. (Does Huawei stopped supporting the P9 eventually?)
The second way is to run TWRP and reinstall the custom ROM (In my case RROS 5.8.5 for my P9) and to never turn my phone off again. However this isn't always possible to keep it on since it also could happen that I'm not at home and my battery suddenly died.
Installing the stock ROM (or a custom ROM based on a stock ROM) however doesn't work. The stock ROM itself simply won't get installed, neither over the dload method or TWRP or fastboot and a custom ROM based on the stock ROM results in having my phone simply getting a black screen when locking it and then I need to reboot it to use it again.
What can I do? Could it be that my flash memory could be corrupted or something could have happened with one of the partitions of the phone?
Greetings.
EDIT: I managed to install a stock firmware using this link right here.
After the stock firmware was installed, doing a factory reset and wiping the cache every problem I mentioned above this edit vanished.