Mate 8 Can`t update - General Questions and Answers

Hello, i used this guide https://forum.xda-developers.com/mate-8/general/guide-how-to-downgrade-mate-8-emui-5-to-t3515202 and now i`m stuck with this NXT-L29C900B200. I want to go to European version, with android 7, what i need to do? I don`t have unlocked bootloader, or root. I don`t know what to flash by dload, and with firmware finder, yes, i found the firmware, after dns method, but fail and still fail with system update. Can help me someone?

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[Q] Problem in downgrade or upgrade firmware

I flashed huawei ascend g6-u10 from KitKat b330 to jb b146. This build has some problem like it didn't activate custom version. I decided to go back to original build 135. But during install it will give an error "oemsbl version list check error".
I extract current installed update file and one of the line in oemsbl list file was b135.
I tried to install from fast boot and adb it didn't worked.
I decide to use sp flash tool and it need scatter file and I don't have and there is nowhere I can find it. I tried to use android droid tools but it can't generate scatter file I think because phone is not rooted.
I tried every tools I know to root device but didn't work too.
I tried to unlock bootloader too. I think is nessesarry for rooting but can't get unlock code.
Is there any way to forcely install b135 or b330?
Or is there any way I can get scatter file for sp flash?
Or is there any way to root o.s. ?
Or is there any way to skip oemsbl version list check during install?
Or is there any way to get unlock code.
Huawei device was read and flash firmware completely from /sdcard/dload folder ever.
I don't know this works still now, but why don't you try this?
Downgrade from emui 3.0 to emui lite 2.0 in huawei g6
Friends can you help me in downgrading my huawei g6 to original os emui lite 2.0.
I upgarded to emui 3.0 but I dont know how to downgrade.
Please help.
czkey said:
Huawei device was read and flash firmware completely from /sdcard/dload folder ever.
I don't know this works still now, but why don't you try this?
Click to expand...
Click to collapse
I said I tried that it shows an error
Oemsbl version check error.
I passed that . successfully rooted phone and installed cwm recovery
But now I can't flash custom rom it giva an error again

[Guide] how to update mate 7 without getting error in recovery {update failed}

This guide is for all those who are getting error while updating their mate 7 manually either by local update option or by 3 buttons combo option.
here we go: ( for eg. consider mt7-tl10 model imternation version currently on any firmware and you want to install b123 firmware )
1. Extract recovery from new update.app to be installed i.e. b123 firmware.
2. flash it in fastboot mode.
3. now try to update using any of the option either local update or 3 buttons, it will run smoothly and you are done.
basically first we have to install recovery of the new version we want to install.
same can be followed to easily update to lollipop firmware.
hope this might help someone
Thanks - I was wondering what I was doing wrong since I can't update anymore either OTA, or local update or three fingers method, I constantly get the message "software update failed" and I am stuck with KingUser.apk ...
Can I ask I few more questions (I have changed ROMs in other mobile phones but not on the Mate 7)...
1) Do I need to unlock my bootloader to flash anything (I assume yes, my phone is still unlocked) ?
2) Do I need to use the Huawei Extractor (this one: http://forum.xda-developers.com/showthread.php?t=2433454)?
3) The name of the recovery is recovery.img (I guess so)?
Thanks a lot,
Paolo
Anubis1965 said:
Thanks - I was wondering what I was doing wrong since I can't update anymore either OTA, or local update or three fingers method, I constantly get the message "software update failed" and I am stuck with KingUser.apk ...
Can I ask I few more questions (I have changed ROMs in other mobile phones but not on the Mate 7)...
1) Do I need to unlock my bootloader to flash anything (I assume yes, my phone is still unlocked) ?
2) Do I need to use the Huawei Extractor (this one: http://forum.xda-developers.com/showthread.php?t=2433454)?
3) The name of the recovery is recovery.img (I guess so)?
Thanks a lot,
Paolo
Click to expand...
Click to collapse
1. Yes bootloader needs to be unlocked .
2. Yes, huawei extractor is required.
3. Yes it is recovery.img. You have to flash it in fastboot mode

Update after unlocking bootloader and rooting in Android 6 EMUI 5

Hi,
I have unlocked bootloader and got root permissions without upgrading first to EMUI 5.
So now I can't install any new ROM.
I need a simple guide to update phone and have root again?
Please I'm not an expert, so could you please tell me the steps I need to follow and where I can find the files I need for this process (if any)?
I have L09 - C432
Thanks a lot
Lorog said:
Hi,
I have unlocked bootloader and got root permissions without upgrading first to EMUI 5.
So now I can't install any new ROM.
I need a simple guide to update phone and have root again?
Please I'm not an expert, so could you please tell me the steps I need to follow and where I can find the files I need for this process (if any)?
I have L09 - C432
Thanks a lot
Click to expand...
Click to collapse
Boot to erecovery. Select the first option to download and flash stock firmware. This will automatically download the latest firmware available. After it's done, flash our latest TWRP and root from there.

Honor 8 (FRD-L09) brick help.

Hello.
I need a help with my Honor 8, it's been bricked and I honestly don't know if there is much to do in my current situation.
So the phone has locked bootloader and stock recovery.
Fastboot always returns 'Command not allowed'
What exactly happened:
I was running Stock ROM, rooted, TWRP Recovery with unlocked bootloader.
An official OTA update popped-up on my phone, I was in a rush and I missclicked (don't even ask lol) and the update started installing, I knew I'm screwed.
So I was about to play with fastboot, but it always returned 'Command not allowed'.
And probably the worst mistake happened a few minutes ago (6:00 am trying to fix it half a sleep), I was reading some posts about the dload method, >>FASTFORWARD I installed an official update using the dload method and locked my bootloader by doing this.
QUICK SUMMARY:
So I'm stuck on a bootloop.
The 3 button combo works.
Stock Recovery works as well.
Fastboot does NOT work. (I tried flashing, unlocking, temp-booting.. but nothing)
adb always returns error:
Code:
device unauthorized.
This adb server's $ADB_VENDOR_KEYS is not set
Try 'adb kill-server' if that seems wrong.
Otherwise check for a confirmation dialog on your device.
Is there ANYTHING I can do in my current situation? :crying:
Thanks in advance for any help.
Have a nice day.
Hello, as long as you have an official recovery, a proper BOOT.IMG and the dload method is working there is still a chance( i hope), the only thing you need to know is that if the firmware is the wrong for your phone it will deny it. It means that is if you try to install an android 6.0 based stock ROM over a 7.0 ROM , it will say software upgrade failed or something like that.
You need to know under which Android version you were and install the same or maybe a more recent one but not to far away from your actual ROM, try the next one. You can also try to downgrade USING a rollback package that you can download on honor official site. Make sure that's the the correct file for your phone.
Hope you'll make it bro, let me know how the situation evolve
(sorry for any language mistake, english isn't my native language.)
Rayan19997 said:
Hello, as long as you have an official recovery, a proper BOOT.IMG and the dload method is working there is still a chance( i hope), the only thing you need to know is that if the firmware is the wrong for your phone it will deny it. It means that is if you try to install an android 6.0 based stock ROM over a 7.0 ROM , it will say software upgrade failed or something like that.
You need to know under which Android version you were and install the same or maybe a more recent one but not to far away from your actual ROM, try the next one. You can also try to downgrade USING a rollback package that you can download on honor official site. Make sure that's the the correct file for your phone.
Hope you'll make it bro, let me know how the situation evolve
(sorry for any language mistake, english isn't my native language.)
Click to expand...
Click to collapse
Woohoo, after a few tries & factory resets I was able to boot my phone again using the dload method :victory: The TWRP recovery has vanished and it seems like there is no sign of root(?) either, I'm gonna redo everything again, thanks so much for your help, you saved me bro <3 Have a wonderful day.
I am really glad that you get your phone back on track ! And yh the dload method bring you to stock everything, stock recovery,stock system etc etc.
Have a nice day
crepnik said:
Woohoo, after a few tries & factory resets I was able to boot my phone again using the dload method :victory: The TWRP recovery has vanished and it seems like there is no sign of root(?) either, I'm gonna redo everything again, thanks so much for your help, you saved me bro <3 Have a wonderful day.
Click to expand...
Click to collapse
Hi Crepnik,
Even I am facing the same issue. Can you please tell me which ROM did you download.
My phone was update to Nougat EMUI 5.0
Thanks
[email protected] said:
Hi Crepnik,
Even I am facing the same issue. Can you please tell me which ROM did you download.
My phone was update to Nougat EMUI 5.0
Thanks
Click to expand...
Click to collapse
Try to flash the rollback package and then an EMUI 4.x ROM. They're both available on honor official site
Rayan19997 said:
Try to flash the rollback package and then an EMUI 4.x ROM. They're both available on honor official site
Click to expand...
Click to collapse
Hi Ryan,
Thank you so much for responding.
I could see two ROM in the official site http://www.hihonor.com/in/support/
HONOR 8 Firmware (FRD-L02, C675B130CUSTC675D002, India)
HONOR 8 Firmware (FRD-L02, Android 6.0, EMUI 4.1, C675B160, India Channel)
I tried with both the ROMs but no luck
I placed the update.APP file inside sdcard but the update stops at 5% showing that it has failed.
I also tried flashing the recovery.IMG in fastboot mode.
I have lost all the hopes in my new phone
In the rescue mode it says UNLOCKED.
Please guide me with some detailed steps.
Thanks
Flash the stock recovery of the ROM that was previously installed on your phone , then with dload method flash the rollback package downloaded from honor site , and finally flash one of the two ROM, it may resolve your issue because the phone won't accept a lower firmware without flashing the rollback package first. As long as you can use dload method it should be fine.
If it doesn't work try to flash boot.img , recovery.img, cust.img, vendor.img and system.img extracted from a clean firmware downloaded on honor official site
Let us know how the situation evolve

[NXT-L29C636B103]Updated to NRD90M test-keys and don't know how to get back

Hello,
I recently found FirmwareFinder and tried it out. I found a Nougat Rom for my System NXT-L29C636B103 and installed it. I read the changelog before but it wasn't marked as beta.
Also it wasn't named NRD90M in FF.
I know tried to get back with dload and HiSuit and FF (Because the rom doenst have a update program...) but it wont work.
I don't have a Unlocked Bootloader or Root, atleast i don't know how to unlock it. But I would love to get Root with Magisk or something^^
EDIT: It seems that my bootloader is unlocked. I checked with fastbooot oem get-bootinfo and get "(bootloader) unlocked" as result.
Didnt knew because i bought the phone from a friend
I hope someone can help me..
Greetings
skuhlight said:
Hello,
I recently found FirmwareFinder and tried it out. I found a Nougat Rom for my System NXT-L29C636B103 and installed it. I read the changelog before but it wasn't marked as beta.
Also it wasn't named NRD90M in FF.
I know tried to get back with dload and HiSuit and FF (Because the rom doenst have a update program...) but it wont work.
I don't have a Unlocked Bootloader or Root, atleast i don't know how to unlock it. But I would love to get Root with Magisk or something^^
EDIT: It seems that my bootloader is unlocked. I checked with fastbooot oem get-bootinfo and get "(bootloader) unlocked" as result.
Didnt knew because i bought the phone from a friend
I hope someone can help me..
Greetings
Click to expand...
Click to collapse
Hi.
Firstly, you should get the Huawei id details from your friend and the bootloader code.
Secondly, flash TWRP recovery and flash original Huawei rom.
Hey,
I have a working unlock Code now.
I used the huawei official Rollback FW C900B500 and flashed it. After this I flashed C432B192 to get OTA Updates in Germany. But now I'm in C900B192 and can't get OTA updates. I Tried to get B582 with FF but get an Error at Installation because of incompatibality with my System.
Amy ideas what i can do next? :/
skuhlight said:
Hey,
I have a working unlock Code now.
I used the huawei official Rollback FW C900B500 and flashed it. After this I flashed C432B192 to get OTA Updates in Germany. But now I'm in C900B192 and can't get OTA updates. I Tried to get B582 with FF but get an Error at Installation because of incompatibality with my System.
Amy ideas what i can do next? :/
Click to expand...
Click to collapse
You can use srk tool to change oeminfo

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