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 Update/Recovery Brick

Hello guys. I've been constantly trying to make my P9 L09 work again after I tried out a beta of emui 5. After trying to get back to stuck a lot of times, with many different OVA's my phone has done nothing but boot into eRecovery. It says "update succesful" but then it will be in a boot loop into erecovery asking me if I want to repair through wifi. I have no idea what to do now. Since the wifi thing just fails. I've tried everything and right now I just want to back to stock. But not even Huawei's own Firmware seems to work. I am from Denmark and I was on a EU firmware B182 to start with. I did not unlock my bootloader or root anything, only updated with vol up, down and power button. I tried to get it to hard reset, but it only gives me the option to restore via. wifi.
The problem starts as soon as it has finished "Optimizing system", please help, and be careful when updating to unofficial beta! ^^
If I find a way to resolve it I will post it below!

I think your phone C432 so try this http://forum.xda-developers.com/p9/help/missing-themes-compass-icons-t3519338
Upload files sd card other phone or pc, open your phone dload mode (press vol+ vol- and power button) and ok.

FIXED!
:laugh::laugh::laugh::laugh:
Okay so I fixed the issue. I almost gave up, but I had installed the latest OTA from Huawei's website, and after many attempts at doing a hard reset it finally gave me the option to clear cache and reset the phone to factory. Maybe I had to time the buttons better or maybe it just sorted it self out, but now the phone is like new!
So if anybody runs into the eRecovery boot loop, be patient and try to reset it many times! It might sort itself out.
Thank you for help by the way!

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

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

TWRP soft brick?

After months of deliberation I finally decided to root my Note 9. It was the first time I've ever tried rooting and it seems to have gone horribly wrong. To root the phone, I followed the guide in the video titled 'How to Root Galaxy Note 9! [EASIEST METHOD]' on youtube which has an instruction link in the description. As a new user here, the forum doesn't allow me to post links yet, so please just type the title on youtube and it'll come up as the first result.
What I did was:
- unlocking bootloader
- Flash AP file with TWRP version 3.4.0
- Wipe data
- Since I was worried about using a software from an unknown source, I then flashed the official magisk v20.4 instead of the 'N9-S9_root_for_oem_issue_devices_v3' file recommended in the video.
After doing so, the note 9 restarted and showed the error message "Verification Failed, Unable to restart your device. The Integrity verification has failed. You need to reset your device to factory default settings. This will erase all your data.". I allowed the phone to reset.
Following this, the phone restarted and showed exactly the same message of 'verification failed' and no amount of going through the rebooting process resolved the issue. I googled the issue and was advised to flash the phone with Odin by going into download mode. I then tried to go into download mode, but the phone will simply not go into it and tries to restart the normal way. I also tried to connect to my laptop to see if I can flash with odin but the phone was not recognised at all by the computer.
I then tried to reboot using the twrp key combo and this worked. I then decided to try flashing with the 'N9-S9_root_for_oem_issue_devices_v3' file in the tutorial. Yet, this led to the same issue as with the official magisk file.
Looking at some rooting tutorials, I see that some of them recommend flashing CSC, AP, BL and CP instead of just the AP in the tutorial I followed. I then thought that perhaps the issue is I need to install a ROM on the device. I therefore tried to load the lineage 17.1 ROM in the micro SD card and installed it (top left option on twrp 'install') as well as the magisk and disable_dm_verify_forceencrypt zip files.
In hindsight, this was a stupid move from me - I did so I was in full panic mode at that point and desperate for a solution.
After doing so, the phone rebooted and showed a booting animation of a single blue curved line stuck with a circle rolling from right to left on it.
I left it for a while, hoping that it meant the new ROM was booting. 30 min later it was still stuck on the animation!
I then tried to reboot the phone. Pressing power button did nothing. I then tried different combinations and eventually power + volume up + bixby allowed it to restart in TWRP mode.
As of now, the phone is still in TWRP mode. The phone is still not recognised by my laptop and will not enter download mode if I press volume down + bixby when restarting.
I am fully aware that I've screwed up the rooting process and feel awful about it. It was the first time I've ever tried rooting and I really hope it is only a 'soft brick' and that my phone can be saved. I would really appreciate if anyone here could advise what I can do to complete the root process correctly from here?
Many thanks,
Sam

Is there a "download" or "bootloader" option when you press the reboot button in TWRP? My Note9 is on stock, so I'm not 100% certain myself. However if there is, that should take you to Samsung's download screen. This way you can send yourself back to stock if you give up on rooting your device.
BTW, I do recommend following a note9 rooting guide on XDA (it's not too hard to find) over a youtube video, since YouTube videos can often be out of date or a little sketchy.