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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

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.
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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

Need help fixing an Honor 8. Stuck on EMUI 4.0 after failing with custom ROMs

Hello! So I tried flashing a custom ROM to my friends Honor 8 after reading around a bit and such but it ultimately failed and now we're trying to get it back to the default ROM. We found a ROM download but it was for the version FRD-l09C900B120 which was running EMUI4.0 and Android 6.0. I also read that the "C" version he has doesn't receive any further updates, I'm failing to find anything on the correct "C" version anywhere. If anyone could guide me through the installation process for the correct and latest firmware it would be great!
On another note, the build in eRecovery doesn't seem to want to install the update package. It always fails pretty early on after connecting to WiFi, any fix for that would be great. Thanks!
Thanks for any help!

On which ROM was the custom ROM based? You should try to flash the rollback package with dload method and then flash B120 or another EMUI 4.X ROM with same method

Rayan19997 said:
On which ROM was the custom ROM based? You should try to flash the rollback package with dload method and then flash B120 or another EMUI 4.X ROM with same method
Click to expand...
Click to collapse
The custom ROM was Linageos 14.1, so it wasn't anything EMUI based.
I'm gonna try and manually flash the ROM from an update.app that we downloaded from the app Firmware Finder.

ZelafAry said:
Hello! So I tried flashing a custom ROM to my friends Honor 8 after reading around a bit and such but it ultimately failed and now we're trying to get it back to the default ROM. We found a ROM download but it was for the version FRD-l09C900B120 which was running EMUI4.0 and Android 6.0. I also read that the "C" version he has doesn't receive any further updates, I'm failing to find anything on the correct "C" version anywhere. If anyone could guide me through the installation process for the correct and latest firmware it would be great!
On another note, the build in eRecovery doesn't seem to want to install the update package. It always fails pretty early on after connecting to WiFi, any fix for that would be great. Thanks!
Thanks for any help!
Click to expand...
Click to collapse
You did not make any twrp backup??
You are on twrp recovery right now??
Which firmware number you were on before going to custom??

hassanjavaid8181 said:
You did not make any twrp backup??
You are on twrp recovery right now??
Which firmware number you were on before going to custom??
Click to expand...
Click to collapse
We did not make a twrp backup (In hindsight we should've....)
We don't have twrp on it right not but can be fixed if needed.
We were on the latest update available to the phone which should be latest today as well. (OTA)

Flashing it manually made the phone enter a bootloop. It didn't even start the firmware. Any suggestions?
EDIT: We got into Fastboot. What are our options?

Right now your best option in my opinion is to flash Boot.img, recovery.img,cust.img and system.img that you will extract from the UPDATE.APP of your CURRENT Rom. Then just try the dload method again and again, it may not accept the firmware you try to flash but in this case just try another, but not a lower one because you need the rollback package to do that

Rayan19997 said:
Right now your best option is to pray for USB debugging to be enabled and then unlock the bootloader if you didn't do it earlier. After that you should try to flash TWRP
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Click to collapse
What should we do after we've flashed TWRP? When I tried flashing LineageOS 14 it decided to fail the installation somehow and be at an endless boot animation. So I'd like to get the phone restored to EMUI5.0.

Sorry, what I said was garbage, I just edited my comment, you're so quick lol

Rayan19997 said:
Sorry, what I said was garbage, I just edited my comment, you're so quick lol
Click to expand...
Click to collapse
Well currently there's a broken firmware on it of FRD-L09C432B943... Or something like that.
I think at this point he's looking at getting a new phone all together.

No matter if the firmware inside isn't working properly, with fastboot you can manually flash each partition that is needed as long as USB debugging is enabled and bootloader unlocked. After flashing these cleans parts you can properly use the dload method , and if you get an error using dload method can you tell me which one is it? At least the device behavior.
I have to sleep, I'll be right back on the morning hope you'll make it this night , if don't , please be more specific and accurate when you describe the errors you faced, that way we will be more efficient when answering
Sorry for language mistakes, English isn't my native language :silly:

Rayan19997 said:
No matter if the firmware inside isn't working properly, with fastboot you can manually flash each partition that is needed as long as USB debugging is enabled and bootloader unlocked. After flashing these cleans parts you can properly use the dload method , and if you get an error using dload method can you tell me which one is it? At least the device behavior.
I have to sleep, I'll be right back on the morning hope you'll make it this night , if don't , please be more specific and accurate when you describe the errors you faced, that way we will be more efficient when answering
Sorry for language mistakes, English isn't my native language :silly:
Click to expand...
Click to collapse
Currently there's no working OS on it so I'm gonna see if I can find a firmware that I can flash. Do you have any idea where I can get one?

Yeah on honor official site: Hihonor
Or with firmware finder

ZelafAry said:
Currently there's no working OS on it so I'm gonna see if I can find a firmware that I can flash. Do you have any idea where I can get one?
Click to expand...
Click to collapse
If you need a full firmware then you should visit official honor site..

If you flash LineageOS on a phone without OS it won't work just because LineageOS patch the current installed System, if there is no system there is no way it will boot

hassanjavaid8181 said:
If you need a full firmware then you should visit official honor site..
Click to expand...
Click to collapse
I can't find any Honor 8 FRD-L09 downloads anywhere on the Huawei sites or Honor sites. They must've removed the downloads just like they did with the Honor 7..
Rayan19997 said:
If you flash LineageOS on a phone without OS it won't work just because LineageOS patch the current installed System, if there is no system there is no way it will boot
Click to expand...
Click to collapse
I get that now and I know how to proceed in the future.
On another note, I got a good UPDATE.APP available but it refuses to install using the dload method because the versions are different. Does anyone know which partition the USERDATA.img file goes to?

You don't have to flash each single partition but dude in my opinion it's better to flash the whole UPDATE.APP, just use the rollback package and flash a lower EMUI.
Another thing: I'm currently on honor official site and I can download firmwares, you're searching in the wrong place.
www.hihonor.com/fr/support/search-result/index.html?keywords=honor 8

Rayan19997 said:
You don't have to flash each single partition but dude in my opinion it's better to flash the whole UPDATE.APP, just use the rollback package and flash a lower EMUI.
Another thing: I'm currently on honor official site and I can download firmwares, you're searching in the wrong place.
www.hihonor.com/fr/support/search-result/index.html?keywords=honor 8
Click to expand...
Click to collapse
Thank you for that link, I downloaded it and flashed it, I couldn't find it on any other hihonor site but this French one had it.
Again, thank you, it worked flawlessly installing and it updated instantly. You saved me from a lot of worrying and anxiety about breaking my friends phone lol.

I'm really glad to read that dude

thanks for the firmware been looking for it for very long!
btw you just saved another honor 8

Any possible way to unbrick my phone?

Hello, guys. I bought two of these phones. BLN-AL30 VERSION is the one that I was using for a while. I tried to unlock its bootloader and it was a complete success. I remember that my phone said BLL-L22 in its about device section and not BLN-AL30 though. I proceeded to install TWRP and rooted it, I also backed up all the partitions so I decided to go for the elite version (TWRP, for I wanted to install their room). Everything was ok. I installed the elite rom which I thought was cool and I used it for a while. Then I decided to switch into slim ROM. I had made the proper back up also and still have them files. I backed up everything because I realized the elite ROM asked for a complete wiping. The next thing I realized was that my phone wouldn't be able to install the slim rom because I had this error:
Unable to wipe vendor /vendor command not allowed.
It also happened with product and version partition. And sometimes it said unable to mount /vendor. (The same for product, version)...
Now, I can't install any other room because of that. And I have downloaded many update.app files to recover and heal my phone as stock but it seems impossible. I have bought another honor 6x and it's coming the next month because I loved this phone but also because if bricked but unrecoverable I'd like to have its parts in case of some repair needed. Is there anyway to recover it? it's so sad. I never thought elite rom would do that to my phone. I assure I followed every single step from its thread. Thanks in advance. Hope you can help.

try to formate data then go to main main screen reboot to recovery now wipe everything. if it is not working then try previous version of elite TWRP or Berlin TWRP. if nothing works then u need to do dload. but u r saying dload is also not working still u have two solutions. download oem info of another region and flash it via TWRP u can try oem info for bln-l22c675b340 https://forum.xda-developers.com/honor-6x/how-to/guide-debranding-to-india-variant-bln-t3679402 now Google for bln-l22c675b340 firmware download it then unzip update app file. now Flash oem info file in TWRP then using sd card flash update app by pressing 3 buttons. this time it will install for sure. if oem file failed to install then extract the oem file then download srk tool put both files in restore folder connect your phone in fastboot restore oem info will work for sure. there is no way to brick honor 6x lot of rescue methods available if this fails still you can use hwota8 method to upgrade oreo.

Thank I'm going to try that
Where can I find the Oreo update thing?. Thanks

evjgl said:
Where can I find the Oreo update thing?. Thanks
Click to expand...
Click to collapse
once it is ready for your model. its in beta phase in China and not released for public yet.

Help me with my P8 Lite 2017 please

Hi everyone, I'm new to this forum, I have been going crazy with a Huawei P8 Lite 2017 for two days, I was trying to install DarkJoker360's AOSP 11 I have already modded a P8 Lite (not 2017) and I had no problems, I managed to install TWRP recovery 3.2.1-0 (I can't find the recovery that DarkJoker recommends) via ADB on my Windows PC I did all the necessary wipes and tried to install this operating system in the partition (Image System) it is an .img file after doing this I restarted and the only thing it does is bring out the Android writing, as if it had installed the rom but then it ends up restarting after a few seconds of this writing, without even getting to the configuration screen, what could I have mistaken?
I apologize for any mistakes but I'm Italian and I might have something wrong

Chricap said:
Hi everyone, I'm new to this forum, I have been going crazy with a Huawei P8 Lite 2017 for two days, I was trying to install DarkJoker360's AOSP 11 I have already modded a P8 Lite (not 2017) and I had no problems, I managed to install TWRP recovery 3.2.1-0 (I can't find the recovery that DarkJoker recommends) via ADB on my Windows PC I did all the necessary wipes and tried to install this operating system in the partition (Image System) it is an .img file after doing this I restarted and the only thing it does is bring out the Android writing, as if it had installed the rom but then it ends up restarting after a few seconds of this writing, without even getting to the configuration screen, what could I have mistaken?
I apologize for any mistakes but I'm Italian and I might have something wrong
Click to expand...
Click to collapse
I thought huawei doesn't allow bootloader to be unlocked this proves Me wrong

Austinredstoner said:
I thought huawei doesn't allow bootloader to be unlocked this proves Me wrong
Click to expand...
Click to collapse
I unlocked the bootloader via "DC-Unlocker" so I don't think that's the problem

Chricap said:
I unlocked the bootloader via "DC-Unlocker" so I don't think that's the problem
Click to expand...
Click to collapse
If u still have twrp installed after flashing that custom Rom u can try flashing other custom rom like lineage os
Before flashing anything else try to make sure what your doing 1 mistake could make u ruined like forever if u flashed other custom rom still in bootloop but TWRP uninstalled well than your screwed

Austinredstoner said:
If u still have twrp installed after flashing that custom Rom u can try flashing other custom rom like lineage os
Before flashing anything else try to make sure what your doing 1 mistake could make u ruined like forever if u flashed other custom rom still in bootloop but TWRP uninstalled well than your screwed
Click to expand...
Click to collapse
Yes, I still have the TWRP installed, precisely version 3.4.0-0, since I could not find a working ROM I tried to debrand it (it was brand Tim) and I think I have done a damage to follow that guide, now I do not not even install the stock rom anymore. I don't know what to do at this point, I would leave the custom rom alone and reinstall its stock rom, at least debrand ...