[Q/A] How do i downgrade from 6.0 to 5.0?? - ZenFone 2 Q&A, Help & Troubleshooting

i want to downgrade 6.0 to 5.0 for xposed and something.
please help me.
ze550ml

you can follow steps on this link, it works for me
MOD Edit:
This has the potential to brick your device. Use at you're own discretion.
http://www.asus.com/zentalk/forum.php?mod=viewthread&tid=79480&highlight=downgrade

on ze551ml I just followed the unbricking guides (xFSTK, AFT)

luthfanos said:
you can follow steps on this link, it works for me http://www.asus.com/zentalk/forum.php?mod=viewthread&tid=79480&highlight=downgrade
Click to expand...
Click to collapse
dont know why. but i tried this and dont work. when reboot to bootloader. my phone have blank screen.

VinzNguyen said:
dont know why. but i tried this and dont work. when reboot to bootloader. my phone have blank screen.
Click to expand...
Click to collapse
did you flash the dnx and the ifwi also the droidboot for ze550ml?

This title is misleading. It's not a "how-to" thread. And it doesn't even belong to the general section, but rather in the questions section.
Sent from my Sony E6553 using XDA Labs

luthfanos said:
did you flash the dnx and the ifwi also the droidboot for ze550ml?
Click to expand...
Click to collapse
yesss

VinzNguyen said:
dont know why. but i tried this and dont work. when reboot to bootloader. my phone have blank screen.
Click to expand...
Click to collapse
Unlock with ZF2_one_click_unlock_by_sorg_v2

Just adb sideload rom.zip dont work to downgrade to .184 firmware?

VinzNguyen said:
dont know why. but i tried this and dont work. when reboot to bootloader. my phone have blank screen.
Click to expand...
Click to collapse
same issue for me too, after restarting to bootloader, stuck at black screen. dont know what to do

This MAY brick your phone. DO NOT USE you can unbrick with this guide http://forum.xda-developers.com/zenfone2/general/guide-brick-soft-hard-bricked-zenfone-2-t3284256

OP be careful of what you do to your device. I would research it more before jumping into anything, because you do have a potential to brick the device.
Thanks
Wolf

Why return to 5.0 só fast...is more easy wait for oficial ota of 6.0.1 and do adb sideload!

I want to downgrade as well, I've found several guides, but I'm afraid I'll brick my phone.
I saw in one place that sideloading the stock 5.0 firmware from the asus website could work... would this be a valid solution? Would it be as simple as sideload with adb the stock 5.0 firmware, if I'm in the 6.0 already?

zch_fernando said:
I want to downgrade as well, I've found several guides, but I'm afraid I'll brick my phone.
I saw in one place that sideloading the stock 5.0 firmware from the asus website could work... would this be a valid solution? Would it be as simple as sideload with adb the stock 5.0 firmware, if I'm in the 6.0 already?
Click to expand...
Click to collapse
BlackForward said:
Hi, I do not speak English very well, but I'll try.
First go to the website of Asus, and download the firmware .. 184 or this link (http://dlcdnet.asus.com/pub/ASUS/Ze...user.zip?_ga=1.147549438.850793534.1463019251) and put the external SD Card!!!
NOTE: If your bootloader is similar to the image (with the blue letters ..), you just need to step 3 of this my turorial
ht*tp://www*androidheadlines*com/wp-content/uploads/2015/05/asus-zenfone-2-google-howto-1.jpg (remove "*" again^^)
1. Go to this page (https://www.techmesto.com/root-zenfone-2/) and follow the steps of the second method..
1.1 Download Z00A_WW_2.20.40.184 version (https://mega.co.nz/#F!k4MHiAgL!dVuOKeH3eokcwPSNI79ffw)
1.2 Download and extract FlashTools (http://forum.xda-developers.com/attachment.php?attachmentid=3301263&d=1431011927)
1.3 Extract Z00A_WW_2.20.40.184_system_w_root.zip (for step 1.1) and put the "system.img" in the folder of FlashTools together with "boot.img", "droidboot.img" and "recovery.img"
2. Now follow the steps of the second method (https://www.techmesto.com/root-zenfone-2/), from step 7 to 11;
3. Also I was stuck in the bootloader after this procedure... BUT, you need to download this file (the first method): http://www.mediafire.com/download/v6m7n9j0gqins9b/CWM_Zenfone_2_Intel.zip;
3.1 And follow the steps from 1 to 9 (the first method): https://www.techmesto.com/root-zenfone-2/... EXCEPT: The steps include the root (you do not need the root ..)
3.2 When you are already in CWM recovery, only install the firmware 184 (of start.. of Asus) which is in the external SD Card ... and end ^^.
3.3 I recommend wipe data / factory after starting the device first time...
I have helped
Click to expand...
Click to collapse
Try this one ^ It did worked for me, just make sure you read the tutorial carefully so you won't mess up your phone.

Flynhx said:
Try this one ^ It did worked for me, just make sure you read the tutorial carefully so you won't mess up your phone.
Click to expand...
Click to collapse
Thank you!!! This worked!
I got into boot loop, but I did factory reset, and everything is good as new!
The only weird thing... the Mail app (Asus email) is missing. I found somewhere the apk file, and I did a sideload of it, and it works. But if I check on the computer the Google Play store, it says that the app is incompatible with my device...

zch_fernando said:
Thank you!!! This worked!
I got into boot loop, but I did factory reset, and everything is good as new!
The only weird thing... the Mail app (Asus email) is missing. I found somewhere the apk file, and I did a sideload of it, and it works. But if I check on the computer the Google Play store, it says that the app is incompatible with my device...
Click to expand...
Click to collapse
Glad that it worked for you too!
Bootloop is normal as seen on the tutorial.
I think that's normal since Asus will replace their default mail app to Gmail once MM final is release. same goes for my phone, Asus Mail doesn't come preinstalled.
Sent from my ASUS_Z00AD using XDA-Developers mobile app

Flynhx said:
Try this one ^ It did worked for me, just make sure you read the tutorial carefully so you won't mess up your phone.
Click to expand...
Click to collapse
Wasted two hours trying to figure how to combine the .bin files into system.img file and still didn't find it.
They were not combined automatically upon extracting them. Used Winrar and 7-zip.
I'm on beta. I only wanted to move to CyanogenMod.
Someone please show me the way.

Related

[Q] updating firmware on a rooted att M8?

Please forgive me if this has been answered elsewhere, i searched but what little i found didnt seem to helpful (maybe im just confused) i want to flash the new Viper rom but it says i need 4.4.4 firmware, my rooted htc only has 4.4.2. How do i update it? I am scared of bricking my new phone so could someone please explain it to me like i am stupid? I used the all_in_one_toolkit (wonderful program!) If it matters..... also i flashed twrp cause there was no OTA att update found (checked twice)
Dragonmaster0430 said:
Please forgive me if this has been answered elsewhere, i searched but what little i found didnt seem to helpful (maybe im just confused) i want to flash the new Viper rom but it says i need 4.4.4 firmware, my rooted htc only has 4.4.2. How do i update it? I am scared of bricking my new phone so could someone please explain it to me like i am stupid? I used the all_in_one_toolkit (wonderful program!) If it matters.....
Click to expand...
Click to collapse
1) Mods won't like you posting a question in the Dev thread... there are specific sections (general, firmware, etc) where you can post it...
2)Considering that your phone is practically new, if you only rooted it and haven't installed a custom recovery, you will be able to update your firmare (OTA) through the built in upgrade process on your phone. Once, that is done, root your phone and install a custom recovery like TWRP.
good luck
Deathsting_50cal said:
1) Mods won't like you posting a question in the Dev thread... there are specific sections (general, firmware, etc) where you can post it...
2)Considering that your phone is practically new, if you only rooted it and haven't installed a custom recovery, you will be able to update your firmare (OTA) through the built in upgrade process on your phone. Once, that is done, root your phone and install a custom recovery like TWRP.
good luck
Click to expand...
Click to collapse
1. SH!t sorry! I didn't realize ?
2. ...i already flashed TWRP,cause i checked twice for a OTA before hand and therr was no update found
Anyone got any ideas?
Dragonmaster0430 said:
Please forgive me if this has been answered elsewhere, i searched but what little i found didnt seem to helpful (maybe im just confused) i want to flash the new Viper rom but it says i need 4.4.4 firmware, my rooted htc only has 4.4.2. How do i update it? I am scared of bricking my new phone so could someone please explain it to me like i am stupid? I used the all_in_one_toolkit (wonderful program!) If it matters..... also i flashed twrp cause there was no OTA att update found (checked twice)
Click to expand...
Click to collapse
Yes, I sure do.
First of all, if you want the newest ViperOne, you'll want 5.0.1 firmware, at least.
Hook up to you PC. Get into ADB/fastboot, and issue the command fastboot getvar all.
Post the readout here, and I, or someone else, will point you in the proper direction to update your firmware.
Please make sure to delete the serial# and IMEI from the readout. Never post those in a public forum.
xunholyx said:
Yes, I sure do.
First of all, if you want the newest ViperOne, you'll want 5.0.1 firmware, at least.
Hook up to you PC. Get into ADB/fastboot, and issue the command fastboot getvar all.
Post the readout here, and I, or someone else, will point you in the proper direction to update your firmware.
Please make sure to delete the serial# and IMEI from the readout. Never post those in a public forum.
Click to expand...
Click to collapse
Ok sure!....how do I issue a command?
Dragonmaster0430 said:
Ok sure!....how do I issue a command?
Click to expand...
Click to collapse
Have you never used ADB or fastboot before?
Okay. This will update your firmware. Backup anything important to you, because this will wipe your phone.
Go here: http://www.htc.com/us/support/htc-one-att/news/
Scroll down to where it says "Manual system update instructions". Read what it says, then click the download link at the bottom.
xunholyx said:
Have you never used ADB or fastboot before?
Okay. This will update your firmware. Backup anything important to you, because this will wipe your phone.
Go here: http://www.htc.com/us/support/htc-one-att/news/
Scroll down to where it says "Manual system update instructions". Read what it says, then click the download link at the bottom.
Click to expand...
Click to collapse
Not by itself, i dont think so anyways... I just followed a youtube vid on how to use the all-in-one-tool kit program... I figured less room for error risk?
Thank you for the link! Will have to reroot and unlock it after the update and stuff like that?
Dragonmaster0430 said:
Not by itself, i dont think so anyways... I just followed a youtube vid on how to use the all-in-one-tool kit program... I figured less room for error risk?
Thank you for the link! Will have to reroot and unlock it after the update and stuff like that?
Click to expand...
Click to collapse
Yes, but that's easy. Unlock your bootloader, flash TWRP, and flash a rooted ROM, such as ViperOne.
Also, I recommend not using one click toolkit methods. They often cause problems, plus doing it manually is easy and gives you an introduction to ADB and fastboot, making it less intimidating.
I don't know how to do it manually =( last time I tried I hard bricked my m7
Dragonmaster0430 said:
Not by itself, i dont think so anyways... I just followed a youtube vid on how to use the all-in-one-tool kit program... I figured less room for error risk?
Thank you for the link! Will have to reroot and unlock it after the update and stuff like that?
Click to expand...
Click to collapse
I get this when running the RUU from the link you sent...
Dragonmaster0430 said:
I get this when running the RUU from the link you sent...
Click to expand...
Click to collapse
what should i do now?
Dragonmaster0430 said:
I get this when running the RUU from the link you sent...
Click to expand...
Click to collapse
You need to re-lock your bootloader first if you are not S-Off.
Get back into fastboot and do fastboot oem lock, then leave your phone connected, and run the RUU again.
xunholyx said:
You need to re-lock your bootloader first if you are not S-Off.
Get back into fastboot and do fastboot oem lock, then leave your phone connected, and run the RUU again.
Click to expand...
Click to collapse
ok I did that my bootloader now shows
"*** TAMPERED***
*** RELOCKED ***
and i still am get the same error message that I posted the screenshot of before
Dragonmaster0430 said:
ok I did that my bootloader now shows
"*** TAMPERED***
*** RELOCKED ***
and i still am get the same error message that I posted the screenshot of before
Click to expand...
Click to collapse
You have an AT&T phone, right? That's what it says in the title. And that download link I gave you is from HTC's official website for the latest AT&T RUU.
xunholyx said:
You have an AT&T phone, right? That's what it says in the title. And that download link I gave you is from HTC's official website for the latest AT&T RUU.
Click to expand...
Click to collapse
Yup It is at&t
Dragonmaster0430 said:
Yup It is at&t
Click to expand...
Click to collapse
I don't know.
Maybe you don't have the drivers installed on your PC.
Go to Device Manager with your phone connected. You should see that your M8 is connected.
If you don't see it in Device Manager, download HTC Sync Manager and run it to install the drivers. After that, uninstall HTC Sync. It doesn't play nice with ADB and fastboot. The drivers will remain.
Then go to Device Manager and confirm that your phone is listed there when connected..
xunholyx said:
I don't know.
Maybe you don't have the drivers installed on your PC.
Go to Device Manager with your phone connected. You should see that your M8 is connected.
If you don't see it in Device Manager, download HTC Sync Manager and run it to install the drivers. After that, uninstall HTC Sync. It doesn't play nice with ADB and fastboot. The drivers will remain.
Then go to Device Manager and confirm that your phone is listed there when connected..
Click to expand...
Click to collapse
mine shows up under device manager as "MTP"
Dragonmaster0430 said:
mine shows up under device manager as "MTP"
Click to expand...
Click to collapse
I really don't know what's going on here.
I do know that if you were to go S-Off, updating your firmware is a piece of cake. You just need to find the firmware.zip and flash it.
xunholyx said:
I really don't know what's going on here.
I do know that if you were to go S-Off, updating your firmware is a piece of cake. You just need to find the firmware.zip and flash it.
Click to expand...
Click to collapse
how do i do all that?

[Q] Not getting OTA

Hey guys. I've had my Zenfone 2 for almost 2 month now. I'll include a screenshot of my current version, but basically I'm on 2.13 but there is already a 2.18 but it never finds any when I search for them. Am I not doing something?
Thanks
Mohamed1993 said:
Hey guys. I've had my Zenfone 2 for almost 2 month now. I'll include a screenshot of my current version, but basically I'm on 2.13 but there is already a 2.18 but it never finds any when I search for them. Am I not doing something?
Thanks
Click to expand...
Click to collapse
Have you rooted you Zenfone? You can always update it manually if not but downloading the OTA updates and putting them on the SD card.
Nope. Haven't done anything to it. And yes I know but I shouldn't have to manually do it. Know what I mean?
Mohamed1993 said:
Nope. Haven't done anything to it. And yes I know but I shouldn't have to manually do it. Know what I mean?
Click to expand...
Click to collapse
OTA's are released in batches gradually, you might be in the last batches of OTA triggers, i would advice to update manually.
rafyvitto said:
OTA's are released in batches gradually, you might be in the last batches of OTA triggers, i would advice to update manually.
Click to expand...
Click to collapse
The thing is, I'm not exactly sure which version I can use to update. Can someone guide me to the exact ota for me. Also can I jump straight to 2.18 or do I have to go to 2.15 then 2.17,etc?. Thanks a lot.
So i downloaded WW firmware "UL-Z00A-WW-2.14.40.19-user" from the asus support page and i went to flash it via recovery but it just gives an error. I tried renaming the file to "MOFD_UPDATE" but that also just gave me error. I then was able to get it pass the error screen to show the recovery menu but there is only update via adb AND i noticed it says CN at the very top. I'm confused. Any help would be greatly appreciated.
Go to this link, you just have to download the update and not all the 1gb zip from asus support.
http://www.asus-zenfone.com/p/fota-center.html
For your version it's the 1st one 2.13.40.13 to 2.14.40.19 then next one and go on.
Hope that helps.
P.S. Put it in the internal storage of your phone, just drop it there not in folder. Reboot your phone and you will get a system update notification.
There is a Thread dedicated to this .... I would recommend reading it from top to bottom and analyse each step accordingly!! you would be able to figure it out!!
guiz11 said:
Go to this link, you just have to download the update and not all the 1gb zip from asus support.
http://www.asus-zenfone.com/p/fota-center.html
For your version it's the 1st one 2.13.40.13 to 2.14.40.19 then next one and go on.
Hope that helps.
P.S. Put it in the internal storage of your phone, just drop it there not in folder. Reboot your phone and you will get a system update notification.
Click to expand...
Click to collapse
Thanks man. I've been trying this all day yesterday. I download it and put it on the storage, NOT in any folders.(I removed my Micro-SD) I even tried renaming it "UL-Z00A-WW-2.14.40.19-user.zip". Still no pop-ups. Even after restarting.
SBFarooq said:
There is a Thread dedicated to this .... I would recommend reading it from top to bottom and analyse each step accordingly!! you would be able to figure it out!!
Click to expand...
Click to collapse
If you could point me in the right direction i would grateful appreciate it. My laptop doesn't have internet access so i'm searching this website on my mobile device. Not as easy to navigate.
Weird, I just try on mine and it ok. When im on pc will post a link to where you can flash the lastest rom
Sent from my ASUS_Z00AD using XDA Free mobile app
guiz11 said:
Weird, I just try on mine and it ok. When im on pc will post a link to where you can flash the lastest rom
Sent from my ASUS_Z00AD using XDA Free mobile app
Click to expand...
Click to collapse
Thank you. Idk what else to do.
Please see the following ASUS support site with how to update firmware: http://www.asus.com/us/support/FAQ/1009748/
Sincerely
ASUS_USA
Asus_USA said:
Please see the following ASUS support site with how to update firmware: http://www.asus.com/us/support/FAQ/1009748/
Sincerely
ASUS_USA
Click to expand...
Click to collapse
Thank you for your help. However I've tried this multiple times but when i disconnect the cable from my phone i never get the popup.
http://forum.xda-developers.com/zenfone2/help/how-to-upgrade-cn-version-to-ww-t3101556
Here the link, very simple and clear just follow it.
You will need adb fastboot, intel android driver set up and 15 sec installer to install adb driver (adb-setup-1.4.2) for your phone.
guiz11 said:
http://forum.xda-developers.com/zenfone2/help/how-to-upgrade-cn-version-to-ww-t3101556
Here the link, very simple and clear just follow it.
You will need adb fastboot, intel android driver set up and 15 sec installer to install adb driver (adb-setup-1.4.2) for your phone.
Click to expand...
Click to collapse
Thank you . I will give this a try.
guiz11 said:
http://forum.xda-developers.com/zenfone2/help/how-to-upgrade-cn-version-to-ww-t3101556
Here the link, very simple and clear just follow it.
You will need adb fastboot, intel android driver set up and 15 sec installer to install adb driver (adb-setup-1.4.2) for your phone.
Click to expand...
Click to collapse
Yeah i did this. I flashed over the recovery,fastboot, and boot files(took it from "old" folder seeing i'm on 2.13.40). It flashed fine, it now says WW in recovery. However i am stillNOT able to get any pop ups for updates after putting the zip files on my internal storage.
No you must flash lastest img. Then go to recovery and apply update via adb I think.
The zip file for lastest rom is about 1gb.
Sent from my ASUS_Z00AD using XDA Free mobile app

[read] no bootloader

hi
im facing this problem of not having the bootloader page
i once rooted and unlocked the bootloader
then for upgrading the firmware purpose i unrooted and relocked the bootloader
now i want to flash the new firmware , but i cant bcause of no bootloader page
i tried rooting (failed bcause of the same reason)
i tried unlocking (" " " " ")
i cant do anything cause of this problem
pls help me guys
sorry for the bad english
mohdyaz said:
hi
im facing this problem of not having the bootloader page
i once rooted and unlocked the bootloader
then for upgrading the firmware purpose i unrooted and relocked the bootloader
now i want to flash the new firmware , but i cant bcause of no bootloader page
i tried rooting (failed bcause of the same reason)
i tried unlocking (" " " " ")
i cant do anything cause of this problem
pls help me guys
sorry for the bad english
Click to expand...
Click to collapse
If you can access recovery do adb sideload your rom again, it will fix easily.
If not, do this:
http://forum.xda-developers.com/zenfone-5/help/zenfone-5-a500cg-zenfone-6-a600cg-t3354645
ozank said:
If you can access recovery do adb sideload your rom again, it will fix easily.
If not, do this:
http://forum.xda-developers.com/zenfone-5/help/zenfone-5-a500cg-zenfone-6-a600cg-t3354645
Click to expand...
Click to collapse
i tried adb sideload , it loads till 54% and then fails i tried it 5 times i says the same thing
fone works fine but theres no droidboot
i want droidboot
mohdyaz said:
i tried adb sideload , it loads till 54% and then fails i tried it 5 times i says the same thing
fone works fine but theres no droidboot
i want droidboot
Click to expand...
Click to collapse
You need to sideload 2.x roms, 3.x roms cannot be sideloaded like this.
For sideloading another rom you need a fastboot again.
You can do the method i shared link but it completely wipes phone.
Fixed!!!
ozank said:
You need to sideload 2.x roms, 3.x roms cannot be sideloaded like this.
For sideloading another rom you need a fastboot again.
You can do the method i shared link but it completely wipes phone.
Click to expand...
Click to collapse
Hey bro, I just fixed mine. I had no bootloader, no recovery, and the whole partition was ruined. Only a battery with question mark.
First, I fixed the fastboot and recovery. Then fixed the whole partition table using @swiczak 's process. This process has a tiny flaw with the "droidboot.bin" file. I have right file to use. Thanks for keeping me up with this. :highfive:
@mohdyaz, bro......can u have a little patience? I will post a total guide with steps and required files. Till then, take a break. :good:
ozank said:
You need to sideload 2.x roms, 3.x roms cannot be sideloaded like this.
For sideloading another rom you need a fastboot again.
You can do the method i shared link but it completely wipes phone.
Click to expand...
Click to collapse
i dint understand @ozank
and i tried to downgrade , it shows
total xfer : 1.14x
a8962383 said:
Hey bro, I just fixed mine. I had no bootloader, no recovery, and the whole partition was ruined. Only a battery with question mark.
First, I fixed the fastboot and recovery. Then fixed the whole partition table using @swiczak 's process. This process has a tiny flaw with the "droidboot.bin" file. I have right file to use. Thanks for keeping me up with this. :highfive:
@mohdyaz, bro......can u have a little patience? I will post a total guide with steps and required files. Till then, take a break. :good:
Click to expand...
Click to collapse
ok , my fone works fine but jus theres no droidboot(bootloader)
i cant root , unlock bootloader , or upgrade
tell me when u post that whole process ok?:good:
mohdyaz said:
ok , my fone works fine but jus theres no droidboot(bootloader)
i cant root , unlock bootloader , or upgrade
tell me when u post that whole process ok?:good:
Click to expand...
Click to collapse
I think he will explain detailed, so; if you don't understand his explaination, then we will talk
@ozank ok
@mohdyaz
http://forum.xda-developers.com/zenfone-5/help/debrick-asus-zenfoen-5-fastboot-t3377455

I need some help downgrading/rooting my LG G4.

Hello amigos, just to clarify i'm new to XDA so lets get to it then shall we!
So I bought this LG G4 from a guy on eBay, and it basically just arrived today. So the weird thing about the device is, It has a Anti-Rollback Version 4. Ive personally never seen this especially in the UK. Isn't it just the US that's supposed to be effected by these issues???
Is there any way of getting around this or what ever?
Its on Android 6.0 and its the H815 variant, I've tried booting into the boot-loader and that doesn't work (Yes I've used ADB but that didn't work either I also used recovery which for some reason I can access but not the boot-loader ) This is the main issue. There is also something else that doesn't make any sense. The device has an update from LG, It downloads perfectly fine but when it goes to flash the update it just doesn't flash. It comes up with an error. That's all it says in the recovery, error. Yeah that's about it really. The phone works perfectly fine on 6.0 but I just wanted to see if one of the greight minds here could assist me with this issue or just upfront call me stupid for wasting my money on an old phone :laugh:.
Which H815 variant is it?
EU, USA, TR, Int'l?
LPCG7 said:
Which H815 variant is it?
EU, USA, TR, Int'l?
Click to expand...
Click to collapse
It looks to be the EU version to me. I cant be too sure though. Its running on the OPEN EU firmware though. (H81520D)
go to:
settings > about phone > hardware info
LPCG7 said:
go to:
settings > about phone > hardware info
Click to expand...
Click to collapse
Yes the model number is LG-H815. It doesn't say if its EU or INT or what ever.
Is this unusual?
Sileo2056 said:
Yes the model number is LG-H815. It doesn't say if its EU or INT or what ever.
Is this unusual?
Click to expand...
Click to collapse
That's on the page below. There it gives you software version....
mcduffie2010 said:
That's on the page below. There it gives you software version....
Click to expand...
Click to collapse
H81520D is the software version
you need to unlock the bootloader before accessing it first.
this is the only official way for so.
http://developer.lge.com/resource/mobile/RetrieveBootloader.dev
If I may ask to better assist you, what do you plan on doing exactly?
LPCG7 said:
you need to unlock the bootloader before accessing it first.
this is the only official way for so.
http://developer.lge.com/resource/mobile/RetrieveBootloader.dev
If I may ask to better assist you, what do you plan on doing exactly?
Click to expand...
Click to collapse
Firstly I plan on rooting and adding TWRP as I did on my old G3. I tried to use LG's method but it did not allow me to fastboot. When I used ADB it just well, restarted the phone. I used the command adb restart bootloader as it states on the unlocking site. I used administrative permissions. Whats unsual is, I can use adb restart recovery perfectly fine to get to the stock recovery.
The confusing thing for me is, the device has the antirollback version 4
Its the EU version of the H815. It makes no sense!!!!
I'm trying to figure out what could have caused this to happen mainly... The only version with antirollback version 4 is the LS991 ZVF... How is this even been done to this thing!? Its running on the H81520D firmware which 0 of them have the antirollback version 4 that i'm aware of. The bootloader is mysteriously inaccessible by anything I do! This is really bugging me now. Could this be a franken device?
Before proceeding further, check whether your device has SN 404 or other. It is found by removing your battery or checking on the box labels.
LPCG7 said:
Before proceeding further, check whether your device has SN 404 or other. It is found by removing your battery or checking on the box labels.
Click to expand...
Click to collapse
Nope it's sn 606....
Sileo2056 said:
Firstly I plan on rooting and adding TWRP as I did on my old G3. I tried to use LG's method but it did not allow me to fastboot. When I used ADB it just well, restarted the phone. I used the command adb restart bootloader as it states on the unlocking site. I used administrative permissions. Whats unsual is, I can use adb restart recovery perfectly fine to get to the stock recovery.
Click to expand...
Click to collapse
To begin with, I rooted mine by downgrading to LP stock rom as rooting MM is not quite easy using this link : https://forum.xda-developers.com/g4/help/how-downgrade-g4-h815-t3264864
Then I had FIsH twrp installed cause I couldn't unlock my BL using : https://forum.xda-developers.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048
>>ITS RISKY<<
Sileo2056 said:
The confusing thing for me is, the device has the antirollback version 4?
Click to expand...
Click to collapse
Secondly, yours has ARB v4. So there are some hardwork involved in finding a kdz that won't brick your G4 on flashing. As you say it is very much confusing. So do proceed ahead only after properly checking your informations and cross examining carefully.
LPCG7 said:
To begin with, I rooted mine by downgrading to LP stock rom as rooting MM is not quite easy using this link : https://forum.xda-developers.com/g4/help/how-downgrade-g4-h815-t3264864
Then I had FIsH twrp installed cause I couldn't unlock my BL using : https://forum.xda-developers.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048
>>ITS RISKY<<
Secondly, yours has ARB v4. So there are some hardwork involved in finding a kdz that won't brick your G4 on flashing. As you say it is very much confusing. So do proceed ahead only after properly checking your informations and cross examining carefully.
Click to expand...
Click to collapse
Many people are saying the H81520P KDZ file will work for me, apparently once I install it onto the device downgrading is pretty simple.
As for FIsH, eh... I cant figure it out at all. I was so confused by looking at the page for it, I was like eh...
EDIT: Every time I try to upload the KDZ to the device I get this. https://www.leonf.elhs.co/images/LGUP_05-01-18_11-50AM.png
Sileo2056 said:
Many people are saying the H81520P KDZ file will work for me, apparently once I install it onto the device downgrading is pretty simple.
As for FIsH, eh... I cant figure it out at all. I was so confused by looking at the page for it, I was like eh...
EDIT: Every time I try to upload the KDZ to the device I get this. https://www.leonf.elhs.co/images/LGUP_05-01-18_11-50AM.png
Click to expand...
Click to collapse
Installing FIsH is confusing at first...ask me more about it but with proper reading and carefully executing the steps you should be doing great:good:
This common error may be fixed by updating your LGUP DLL file. follow the first steps on https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
LPCG7 said:
Installing FIsH is confusing at first...ask me more about it but with proper reading and carefully executing the steps you should be doing great:good:
This common error may be fixed by updating your LGUP DLL file. follow the first steps on https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
Click to expand...
Click to collapse
Hurah, we are getting somewhere. Im now getting flashing fail and its not restating the device with that DLL!
Sileo2056 said:
Hurah, we are getting somewhere. Im now getting flashing fail and its not restating the device with that DLL!
Click to expand...
Click to collapse
You followed the steps as said to the letter?
LPCG7 said:
Installing FIsH is confusing at first...ask me more about it but with proper reading and carefully executing the steps you should be doing great:good:
This common error may be fixed by updating your LGUP DLL file. follow the first steps on https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
Click to expand...
Click to collapse
Yes i'm following the instructions to the letter. with LGUP. Still getting the error though.
is your phone restarting?
LPCG7 said:
is your phone restarting?
Click to expand...
Click to collapse
What happens is, follow the instructions on that LGUP thread that you sent me, I put the kdz in and restart lgup and then its on refurbish. I click start and the antirollback error appears on any KDZ I use apart from the H81520p_00_0314 which kicks out a Flash Fail error. Oh and thanks for helping me with this!

Downgrade to emui 5

I got a Huawei mate se and didn't realize that allowing it to update to Android o would block the bootloader unlock tool. Is there anyway to downgrade my firmware so I can unlock my bootloader?
voldomart13 said:
I got a Huawei mate se and didn't realize that allowing it to update to Android o would block the bootloader unlock tool. Is there anyway to downgrade my firmware so I can unlock my bootloader?
Click to expand...
Click to collapse
There is a roll-back ROM on firmware finder. As long as it shows your IMEI as approoved, it should install.
That's the nice clean way.
There is a dirty ( possibly dangerous way ) by using the nougat service ROM. That ROM is for bnd-L21, so not sure how an unlocked bootloader will handle it. It has worked on unlocked before.
mrmazak said:
There is a roll-back ROM on firmware finder. As long as it shows your IMEI as approoved, it should install.
That's the nice clean way.
There is a dirty ( possibly dangerous way ) by using the nougat service ROM. That ROM is for bnd-L21, so not sure how an unlocked bootloader will handle it. It has worked on unlocked before.
Click to expand...
Click to collapse
I have been attempting to use firmware finder but I can't wrap my head around actually pushing the update. I heard you need an outdated version of hisuite but no one specifies what version. Any help is appreciated =)
voldomart13 said:
I have been attempting to use firmware finder but I can't wrap my head around actually pushing the update. I heard you need an outdated version of hisuite but no one specifies what version. Any help is appreciated =)
Click to expand...
Click to collapse
Insttall firmware finder from playstore.
In the app select the "hamburger" menu, from top left corner. Select instructions. Either watch videos, or read the text guides
mrmazak said:
Insttall firmware finder from playstore.
In the app select the "hamburger" menu, from top left corner. Select instructions. Either watch videos, or read the text guides
Click to expand...
Click to collapse
The mobile app as far as I can tell doesn't work on newer versions of android. They even have a disclaimer mentioning that the app only works for older devices now.
voldomart13 said:
The mobile app as far as I can tell doesn't work on newer versions of android. They even have a disclaimer mentioning that the app only works for older devices now.
Click to expand...
Click to collapse
You are not on 8.1, the app can work.
But I was only referencing the app for the guides linked inside.
You should be able to use it to flash b330. Which should work in DC
mrmazak said:
You are not on 8.1, the app can work.
But I was only referencing the app for the guides linked inside.
You should be able to use it to flash b330. Which should work in DC
Click to expand...
Click to collapse
My bad I am on 8.0 to be specific bnd-l34 8.0.0.341(c567) and as much as I've tried I can not get it to work on the phone following along on the videos. They are using the app on emui 5.0 not 8.0. It doesn't work anymore on 8.0
All there videos revolve around emui 5.0 or lower. It stopped working with 8.0
voldomart13 said:
My bad I am on 8.0 to be specific bnd-l34 8.0.0.341(c567) and as much as I've tried I can not get it to work on the phone following along on the videos. They are using the app on emui 5.0 not 8.0. It doesn't work anymore on 8.0
Click to expand...
Click to collapse
Because the locked bootloader, you can only use the firmwares that are approoved.
Chances are , the only one that's approoved is the b330
And if not , then only option is the service-rom. Followed by dc-unlock, then the hwota and correct ROM
It has been done.
There should be confirmation back in the mate thread somewhere.
mrmazak said:
Because the locked bootloader, you can only use the firmwares that are approoved.
Chances are , the only one that's approoved is the b330
And if not , then only option is the service-rom. Followed by dc-unlock, then the hwota and correct ROM
It has been done.
There should be confirmation back in the mate thread somewhere.
Click to expand...
Click to collapse
Which mate thread?
voldomart13 said:
Which mate thread?
Click to expand...
Click to collapse
I'm searching. I know i have recommended this process many times, and got many success responses. But I am striking out in finding threads with confirmed responses.
This search only shows 4 found matches for the search info. One does fit real good, but the author has made it sound , not real credible.
https://forum.xda-developers.com/search/forum/7100?query=unlock mate service-rom#posts
mrmazak said:
Because the locked bootloader, you can only use the firmwares that are approoved.
Chances are , the only one that's approoved is the b330
And if not , then only option is the service-rom. Followed by dc-unlock, then the hwota and correct ROM
It has been done.
There should be confirmation back in the mate thread somewhere.
Click to expand...
Click to collapse
What about this method? https://www.getdroidtips.com/full-guide-install-stock-firmware-huawei-smartphone/
mrmazak said:
I'm searching. I know i have recommended this process many times, and got many success responses. But I am striking out in finding threads with confirmed responses.
This search only shows 4 found matches for the search info. One does fit real good, but the author has made it sound , not real credible.
https://forum.xda-developers.com/search/forum/7100?query=unlock mate service-rom#posts
Click to expand...
Click to collapse
This post you made here sounds doable.
This service rom so far has been only thing we found that will load with three button method (dload)
But it is not a full rom to keep on device. It needs you to follow up with flashing fullOTA of your correct version after.
https://www.androidfilehost.com/?fid...83647474828964
1. Unzip download
2. copy the dload folder to root of sdcard
3. power on phone holding all three buttons
4. After phone finishes and reboots, unlock frp and bootloader, if needed
5. Use Huru or HWOTA to flash correct firmware for your model/ region.
Enlighten me what is huru or hwota? If I were to flash this does it boot up into android or is it non functional?
voldomart13 said:
This post you made here sounds doable.
This service rom so far has been only thing we found that will load with three button method (dload)
But it is not a full rom to keep on device. It needs you to follow up with flashing fullOTA of your correct version after.
https://www.androidfilehost.com/?fid...83647474828964
1. Unzip download
2. copy the dload folder to root of sdcard
3. power on phone holding all three buttons
4. After phone finishes and reboots, unlock frp and bootloader, if needed
5. Use Huru or HWOTA to flash correct firmware for your model/ region.
Enlighten me what is huru or hwota? If I were to flash this does it boot up into android or is it non functional?
Click to expand...
Click to collapse
Yes, this should leave you able to boot. And with build level that should allow DC unlocked to give you the code.
Remember like I said before this is kind of a dirty way around and 'could' have issues unknown. Like what if DC does not give you a code, you would then be stuck . (Though you are stuck now)
Huru and hwota are very similar. They both use TWRP to give custom flashing control.
Hwota uses modified stock recovery to flash full ota files.
Huru repacks full ota files so that TWRP can flash them.
Since doth start with TWRP , bootloader unlock is needed.
mrmazak said:
Yes, this should leave you able to boot. And with build level that should allow DC unlocked to give you the code.
Remember like I said before this is kind of a dirty way around and 'could' have issues unknown. Like what if DC does not give you a code, you would then be stuck . (Though you are stuck now)
Huru and hwota are very similar. They both use TWRP to give custom flashing control.
Hwota uses modified stock recovery to flash full ota files.
Huru repacks full ota files so that TWRP can flash them.
Since doth start with TWRP , bootloader unlock is needed.
Click to expand...
Click to collapse
I see. And say dc cant get a code I would be stuck no way of recovery? Man I miss the days of samsung phones and using odin for upgrade/downgrade =/ been doing this stuff since samsung captivate days.
voldomart13 said:
I see. And say dc cant get a code I would be stuck no way of recovery? Man I miss the days of samsung phones and using odin for upgrade/downgrade =/ been doing this stuff since samsung captivate days.
Click to expand...
Click to collapse
Just spent most of the morning going back and forth with someone else with mate see, and they just did restored his device with the service ROM.
I do not now what he was restoring from, but he ended up with "unknown model" and default build number of 8.0.0.46
This is because of (probably) some data corrupt issue making the flash go bad. But he was able to run the ROM and unlock boooader.
Difference is he already had his unlock code.
https://forum.xda-developers.com/honor-7x/help/dload-method-stuck-5-t3821898
voldomart13 said:
I see. And say dc cant get a code I would be stuck no way of recovery? Man I miss the days of samsung phones and using odin for upgrade/downgrade =/ been doing this stuff since samsung captivate days.
Click to expand...
Click to collapse
Have you seen this guide?
It is for "official" hisuite roll-back
I have not rolled back so do not know it it works though.(I checked with my device, it shows no downgrade available)
I know the roll-back firmwarm listed on firmware finder was listed as "bond" and not "bnd". So this means not available "officially"
https://usermanual.wiki/Huawei/EMUI...roid70OperationInstructionpdf.1621060771/help

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