Downgrading from B817 to B621? - Huawei Ascend P7

I wanted to rollback to B621 after updating to B817, because of so many bugs and general unstability.
But I wanted to be sure to not do a mistake, since some people said the rollback B800 package isn't working properly...
Did someone managed to rollback to B621 without problem?
Thanks guys

Maaaaan I'm hopeless I did roll back to b800 (I flashed it over b817, because this is the only rom was able to be flashed over b817) ,since then I'm stuck on b800 whereas I'm not able to upgrade or downgrade... ???

abuelzoz2005 said:
Maaaaan I'm hopeless I did roll back to b800 (I flashed it over b817, because this is the only rom was able to be flashed over b817) ,since then I'm stuck on b800 whereas I'm not able to upgrade or downgrade...
Click to expand...
Click to collapse
did you try by forcing the update (with the power+ volume buttons mode)?
And did you try flashing to the 805 in fastboot mode? (the fastboot images are available in the first post of the B805 update)

I tried 3 buttons method but it didn't work as well.
Unfortunately I don't know how to flash in fastboot... ???

abuelzoz2005 said:
Maaaaan I'm hopeless I did roll back to b800 (I flashed it over b817, because this is the only rom was able to be flashed over b817) ,since then I'm stuck on b800 whereas I'm not able to upgrade or downgrade... ???
Click to expand...
Click to collapse
it works for me :cyclops:

1) Flash custom recovery (cwm/twrp) through bootloader
2) Download and flash MyRom. http://forum.xda-developers.com/ascend-p7/development/rom-rom-v2-0-emui-3-0-t2969283
3) Now, go ahead and flash stock recovery through fastboot
4) Use "dload" method to flash any stock firmware of your choice!
Now you should be all fine! Just ask if there are any concerns..
---------- Post added at 11:03 AM ---------- Previous post was at 10:51 AM ----------
Lankern98 said:
1) Flash custom recovery (cwm/twrp) through bootloader
2) Download and flash MyRom. http://forum.xda-developers.com/ascend-p7/development/rom-rom-v2-0-emui-3-0-t2969283
3) Now, go ahead and flash stock recovery through fastboot
4) Use "dload" method to flash any stock firmware of your choice!
Now you should be all fine! Just ask if there are any concerns..
Click to expand...
Click to collapse
Command for flashing CWM/TWRP (enable usb debugging under settings):
Press enter after each code!
Code:
adb reboot bootloader
fastboot devices
fastboot flash recovery (name of recovery)
fastboot reboot
Now you should've have custom recovery flashed. Simply boot into recovery mode and flash custom rom (MyRom). Again, remember to enable usb debugging under settings)
Code:
adb reboot recovery
From there: Install -> Select MyRom -> And reboot system when finished.

Force flash B609,it works for me.

menez121 said:
Force flash B609,it works for me.
Click to expand...
Click to collapse
Did you flash B609 over B817 or...?? I have just tried to do that, but it's failed... I used force update method...

Related

Huawei p7 does not work

my Huawei p7 only turns on in fastboot, how can I make it work normally?
it doesn't turn on recovery mode or in any other mode than fastboot
what can i do?
craescu said:
my Huawei p7 only turns on in fastboot, how can I make it work normally?
it doesn't turn on recovery mode or in any other mode than fastboot
what can i do?
Click to expand...
Click to collapse
Please provide more information - is the ROM the stock one? Did you flash a recovery? Did you flash a bootloader? Is the bootloader locked or unlocked?
g4b3rm4n said:
Please provide more information - is the ROM the stock one? Did you flash a recovery? Did you flash a bootloader? Is the bootloader locked or unlocked?
Click to expand...
Click to collapse
Most Probably Flashed Wrong Boot or Recovery img ... or used some other rom ..... Like L05/L07 rom on L00
I flashed [ROM] Se7en-Rom v3.8 / EMUI 3.0 / 4.4.2 / B602. after I flashed CWM flashable from recovery B609 for P7-L10 .after I wanted to go back and have left the mess .from fastboot I flashed all boot and recovery possibile but nothing. continuing to turn back with Huawei logo or just in fastboot
craescu said:
I flashed [ROM] Se7en-Rom v3.8 / EMUI 3.0 / 4.4.2 / B602. after I flashed CWM flashable from recovery B609 for P7-L10 .after I wanted to go back and have left the mess .from fastboot I flashed all boot and recovery possibile but nothing. continuing to turn back with Huawei logo or just in fastboot
Click to expand...
Click to collapse
Flash the recovery from here. This is the official recovery for B609.
After that, download B609 full official ROM, and put it on the SD card in a folder called dload. (Note: the file is probably zipped - the only thing you need is a file called update.app.)Start the device by holding all three buttons. Force update should commence and you should get a usable, fresh official B609.
i tryed to do what did you said but it didn't work
thank you anyway
I tried everything you guys .According you can run again? bootloader and unlocked I have done everything with PC bootloader. but with the usual commands (flash boot, recovery.system.cust.userdata) caisson other commands that you can do? you can say if you can restore or abandon so?
Did you try to flash cwm 2.8.1.0 then flash MyROM 3.3, then flash full version B609?

Huawei Mate S bricked!! Please help!!

Hello, i wanted to install TWRP but it doesnt work. After that i got only the Huawei Logo. After that i try to repair it with pathcing new BOOT, SYSTEM and RECOVERY Files via Fastboot. The Files are from the Stock-Rom.
I just get the Recovery Menu after i pluged it in with USB. But every patch is useless. Power/- or Power/+ doesnt work, only Huawei Logo pops up? Is this a Hardbrick? Sorry for my English i hope its understandable.
Blizz' said:
Hello, i wanted to install TWRP but it doesnt work. After that i got only the Huawei Logo. After that i try to repair it with pathcing new BOOT, SYSTEM and RECOVERY Files via Fastboot. The Files are from the Stock-Rom.
I just get the Recovery Menu after i pluged it in with USB. But every patch is useless. Power/- or Power/+ doesnt work, only Huawei Logo pops up? Is this a Hardbrick? Sorry for my English i hope its understandable.
Click to expand...
Click to collapse
what exactly did you do?
how did you "install twrp"?
how did you "patch" new boot, system, recovery?
Tuerkay said:
what exactly did you do?
how did you "install twrp"?
how did you "patch" new boot, system, recovery?
Click to expand...
Click to collapse
i flashed it with the command "fastboot flash recovery twrp-2.8.7.0-carrera.img"
after this i got no recovery system because it dont works.
After some trys to patch it again i maked my mate s unusable.
I tryed to repair my mate s with
"fastboot flash recovery", "fastboot flash boot", and "fastboot flash system"
(i flashed a factory rom, so without updates)
At now, i only get in the download mode. im unable to update the system via micro-sd.
Hi, it happend to me too yesterday. I solved it by reinstalling stock recovery (same way you installed twrp) and a stock rom. And at the end, it runs again.
The procedure did not work flawless. E.g. during installing of stock rom (B321) it got stuck at 90%, I had to repeat it again and again.
So good luck.
Blizz' said:
i flashed it with the command "fastboot flash recovery twrp-2.8.7.0-carrera.img"
after this i got no recovery system because it dont works.
After some trys to patch it again i maked my mate s unusable.
I tryed to repair my mate s with
"fastboot flash recovery", "fastboot flash boot", and "fastboot flash system"
(i flashed a factory rom, so without updates)
At now, i only get in the download mode. im unable to update the system via micro-sd.
Click to expand...
Click to collapse
Fastboot flash recovery and the path (i think you must flash recovery2.IMG too)
Fastboot flash Boot.IMG and the path
Fastboot flash system.IMG and the path
You can flash userdata cache and cust too
---------- Post added at 11:34 PM ---------- Previous post was at 11:31 PM ----------
I dont think the mate s have a download mode.......it has only bootloader and recovery menue

Hard Brick L-19

Hello guys
Need your help or ideas
So i Hard Bricked my P9 i can only enter fastboot.
Phone was on Android N first build,flashed it with TWRP,but i dint have stock app likes camera calculator e.t.c
Phone was working OK but i whanted to get original camera.
So there was made TWRP for android N, i flashed it TWRP worked system was booting, but TWRP not mounting /data, so there was tuto for fix that.
Need to flash zip -> repair /data -> resize ( thats was begining of problem )
zip was success, but format and repair was with error 4
system not booting anymore stuck on bootloop, with twrp.
Tried re-flash N with TWRP dint helped . Only lost TWRP
So i flashed L19C432B136 with dload. update was success, but I don't know why system wast booting, there was no orginal recovery i can't enter it or update with dload.
Stuck in screen "Phone is unlocked and can't be trusted"
Flashing TWRP for MM or N is success but phone don't enter IT
Flashing stock recovery from B136 dint helped ( i tried stock recovery from B322 ; no success)
Tried flashing SYSTEM.img BOOT.img RECOVERY.img from 322, all is sucess but phone not skipping screen ( Phone is unlocked and can't be trusted )
Any idea how to get phone back from dead?
I can only enter fastboot.
Is i possible to flash something true fastboot?
I have full updates of L19C432B182 and L19C432B161.
richish said:
Hello guys
Need your help or ideas
So i Hard Bricked my P9 i can only enter fastboot.
Phone was on Android N first build,flashed it with TWRP,but i dint have stock app likes camera calculator e.t.c
Phone was working OK but i whanted to get original camera.
So there was made TWRP for android N, i flashed it TWRP worked system was booting, but TWRP not mounting /data, so there was tuto for fix that.
Need to flash zip -> repair /data -> resize ( thats was begining of problem )
zip was success, but format and repair was with error 4
system not booting anymore stuck on bootloop, with twrp.
Tried re-flash N with TWRP dint helped . Only lost TWRP
So i flashed L19C432B136 with dload. update was success, but I don't know why system wast booting, there was no orginal recovery i can't enter it or update with dload.
Stuck in screen "Phone is unlocked and can't be trusted"
Flashing TWRP for MM or N is success but phone don't enter IT
Flashing stock recovery from B136 dint helped ( i tried stock recovery from B322 ; no success)
Tried flashing SYSTEM.img BOOT.img RECOVERY.img from 322, all is sucess but phone not skipping screen ( Phone is unlocked and can't be trusted )
Any idea how to get phone back from dead?
I can only enter fastboot.
Is i possible to flash something true fastboot?
I have full updates of L19C432B182 and L19C432B161.
Click to expand...
Click to collapse
You have 2 choices with this.
If you can still boot into TWRP,
1. Flash the Beta Update.zip
2. Power off phone.
3. Press up button whilst powering up phone.
4. You will now be in stock recovery and you can perform a factory reset.
5. the device will now boot in to N beta but will be missing the vendor apps.
There is another way to fix if this doesn't work. Tell me if this method works first.
Edit: I just read in the op that you flashed the update and had stock recovery.
The reason it won't boot is because you need to have b322 flashed and you have to factory reset to repair the corrupt file system. To do this follow these instructions.
1. You need to flash the Boot, Recovery and System images from b322 in fastboot.
2. Then enter stock recovery (Vol + and Power)
3. Then factory reset (this is essential as it repairs the file system and enables boot)
4. The device will then boot.
5. (Optional )If you want to go back from the beta you have to flash the rollback.app to b300 through th dload method first then you can flash a Android 6.0 through the dload method.
Regards
Lee
thel2dab said:
You have 2 choices with this.
If you can still boot into TWRP,
1. Flash the Beta Update.zip
2. Power off phone.
3. Press up button whilst powering up phone.
4. You will now be in stock recovery and you can perform a factory reset.
5. the device will now boot in to N beta but will be missing the vendor apps.
There is another way to fix if this doesn't work. Tell me if this method works first.
Regards
Lee
Click to expand...
Click to collapse
Cant Enter TWRP
noone of recoverys work
richish said:
Cant Enter TWRP
noone of recoverys work
Click to expand...
Click to collapse
Edited my previous post with another method.
thel2dab said:
Edited my previous post with another method.
Click to expand...
Click to collapse
fast qestion
there is 2 recoverys, does both need to be flashed?
@richish
If you get really stuck I can teamviewer your pc and help.
Or you can facebook message me direct.
I had exactly the same issue when I first tried to flash the properdatafix with TWRP for N
Regards
---------- Post added at 10:26 PM ---------- Previous post was at 10:24 PM ----------
richish said:
fast qestion
there is 2 recoverys, does both need to be flashed?
Click to expand...
Click to collapse
You can flash both.
fastboot flash recovery recovery.img
fastboot flash recovery2 recovery2.img
I don't think it is essential but it won't hurt to do it anyway.
---------- Post added at 10:35 PM ---------- Previous post was at 10:26 PM ----------
[/COLOR @richish
I seen you PM. I am not sure it will wok by flashing B182. I think you have to flash B322 first.
Regards
fist you have to flash stock recovery from emui 5(android N) through fastboot.
second , download the rollback package,extract it and put it on dload folder of external storage.
third, turn off the phone , and press vol up + vol down + power button together to enter forced update mode.
if it is successful system will boot and you should flash android M firmware using dload method then u should unlock bootloader,install twrp,wipe /system /cache /data and then flash update.zip(android N) and hw_data of your firmware one after another.
i hope this help you.
still phone is not booting
I redownload b322, extracted Boot.img System.img Recovery.img Recovery2.img and Cust.img with
http://forum.xda-developers.com/showthread.php?t=2433454 Update Extractor
Flashed all .img true fastboot
But still nothing
Stuck on bootloader screen "Your device is unlocked, and can't be trusted"
Maybe i need flash some more images from b322.
Its look like phone cant pass bootloader.
Any sugestions?
P.S. Phone still have warranty, but booloader is unlocked
and fastboot oem relock ************** ends with failed.
"Failed - root cant trusted"
Sugestions how to lock it?
I had my phone bricked from testing cm, and going back to stock. My solution was to flash dload and recovery from the 182, followed by dload flash of 182.
@richish
caution : these commands will format the partition
can u use these command ?
"fastboot format /system"
"fastboot format /data"
or "fastboot erase /system"=> this will erase system partition
Phone is live now.
I downloaded DC-Phoenix and bought 15 credits
flashed stock B182 via DC-phoenix and phone booted.
I recomand this apllication for everybody who have similar problems.
THX for everybody who helpped.
richish said:
Phone is live now.
I downloaded DC-Phoenix and bought 15 credits
flashed stock B182 via DC-phoenix and phone booted.
I recomand this apllication for everybody who have similar problems.
THX for everybody who helpped.
Click to expand...
Click to collapse
How can i sign up for an account, it alway said wrong username or password !:crying:
DC-Phoenix is not cheap but it also cured my phone after bricking it with flashfire where all other methods did not work.
if you use it follow the instructions carefully and do the 2 step flashing although it will work after the first one. if you don`t do the second flash the partition sizes are wrong and a dload update will fail.
smartmobee said:
How can i sign up for an account, it alway said wrong username or password !:crying:
Click to expand...
Click to collapse
First u must buy credits, activate your account in email and then login in aplication.
Hi everyone
I would like to share the problem that i am having with my p9 , so maybe i can get your help.
Firstly i had L19C185 version and i changed Oeminfo in order to install c636 Beta 7.0 Nougat.
I installed the nougat but then realized that i dont have stock apps in my phone, so by mistakely tried to install TWRP for 6.0 Marshmallow and my problem started here.
Now my phone can not boot. its stuck in Phone is booting now ( the screen when you unlock bootloader after huawei logo) , and its never booting. it stays like that.
I tried to flash rboot.img , recovery.img and System.Img from fast boot. but whenever im trying to flash system.img after boot and recovery.img, a get an error and never succeeded to flash system.img. Im trying to flash these .img files from L19C636b180.
Can you please help me or give me some advice because none of mobile services couldnt fix and flash new software. maybe because they dont know exactly what should they do. and in my country i couldnt find anyofficial huawei service provider.
Please help me how to fix my phone.
I also had serious problems with flashing the thing back to stock.
TWRP was broken too for me.
I've done that to fix it all
The ONLY way that worked for me was
1. Download EVA-L19C636B168 from here http://forum.xda-developers.com/p9/development/rom-stock-rom-eva-l19c636b168-t3419586
2. Download that SRK tool http://forum.xda-developers.com/p9/development/tool-srk-tool-huawei-bootloader-root-t3374068
3. Flash the recovery from the SRK tool, you can do that with the tool or directly via fastboot (i don't know other proper source for the correct recovery img)
4. Put the image EVA-L19C636B168 (UPDATE.app) in the "dload" folder of your sd card
5. Start phone in dload mode (Hold all 3 buttons at start) and let the update do it's job
What about recovery??? Does 3 button combination works? Whats heppens if u hold volup and power button when turning phone on!
Situation looks similar what i had.
Only solution for me was dc-phoenix.
U have tu buy 15 points to flash phone (15eur) But it works.
I'm 99% sure that there are bootloader comands what is same as for dc-phoenix,but i dont know them.
Sent from my EVA-L19 using XDA-Developers mobile app
please help
i had bricked my p9 L09 twrp not working noting working only fastboot mode is working plzzz help me in finding boot.img recovery.img system.img

How to update emui of a rooted huawei p9 plus?

Im able to download to update, but when it restarts, it goes to TWRP and doesnt install. Please help.
leahparonid said:
Im able to download to update, but when it restarts, it goes to TWRP and doesnt install. Please help.
Click to expand...
Click to collapse
- Download the Huawei Update Extractor
- Download an official firmware update
- Extract RECOVERY.IMG from Update.app with the Extractor
- Flash the Stock recovery using fastboot
- Done, now you can upgrade using the OEM updater
A little tip from myself, next time you flash TWRP, flash it on RECOVERY2, this way the emergency recovery gets overwritten instead which you can access by Volume+ & Power buttons and the original Recovery still remains the main.
How can i flash twrp over recovery2? Whene i flash its only overwritte first recovery.
Schrotty35 said:
How can i flash twrp over recovery2? Whene i flash its only overwritte first recovery.
Click to expand...
Click to collapse
fastboot flash recovery2 YOUR_RECOVERY_IMG
Great thank you. Work this on all P9 variants?

Info about Stock Recovery p9 Plus

Hi guys, I have to flash a recovery stock to update via OTA. Should I use a recovery related to my serial number (as explained here) or can I use a generic recovery for EMUI 5.0? On my p9 Plus now I have EMUI 5.0.3
Briefly, I saved an EMUI 5.0 recovery on my PC, can I always use this or after every new update the recovery changes and I have to flash a new one looking at my build number?
Sorry for my noob question, thanx in advance
Guys, nobody can help me?
1st, if you have rooted your phone you must do a full update (download the full update package)
2nd for the recovery flash the image of your current version, and next time never flash moded recovery img on recovery partition, you must flash it in recovery2 partition (cmd : fastboot flash recovery2 recovery_image.img)
xzanium said:
1st, if you have rooted your phone you must do a full update (download the full update package)
2nd for the recovery flash the image of your current version, and next time never flash moded recovery img on recovery partition, you must flash it in recovery2 partition (cmd : fastboot flash recovery2 recovery_image.img)
Click to expand...
Click to collapse
Thanx for your answer, really interesting! So if I flash TWRP on recovery2 partition I will be able to update directly via OTA from the update menu on my phone without connect it to pc even if I'm rooted because I maintain my stock recovery on recovery partition?
And after update I have to re-root my phone or this method keep it safe?
yes, you can update directly.
and after the update you have to re-flash TWRP on recovery2 and re-root your phone, and mabye you need to re-unlock your phone first
xzanium said:
yes, you can update directly.
and after the update you have to re-flash TWRP on recovery2 and re-root your phone, and mabye you need to re-unlock your phone first
Click to expand...
Click to collapse
Ok I understand, thanx a lot! :good:

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