Need to downgrade from N to MM - LG G5 Questions & Answers

Hey yall! I hope this is in the right place, if not my apologies. I got myself a G5 and I love except i made a terrible mistake...I upgraded the system from Marshmellow 6.0.1 to Nougat 7.0 and my phone has had nothing but problems and glitches. I want and really need to downgrade this phone to 6.0.1 but I have no idea how and id rather not brick my phone. I have been over several forums already on this site and none of them have the same procedure. One says i need to download this another says i dont need that etc etc.I would like to downgrade to 6.0.1 easily and with minimal risk if possible. If someone could give me a clear easy to understand step by step guide that would be much appreciated. I have the Canadian H831 running android 7.0. Software Version is h83120a. If you need anymore info please let me know.
Thank you in advance

pepsiiperson said:
Hey yall! I hope this is in the right place, if not my apologies. I got myself a G5 and I love except i made a terrible mistake...I upgraded the system from Marshmellow 6.0.1 to Nougat 7.0 and my phone has had nothing but problems and glitches. I want and really need to downgrade this phone to 6.0.1 but I have no idea how and id rather not brick my phone. I have been over several forums already on this site and none of them have the same procedure. One says i need to download this another says i dont need that etc etc.I would like to downgrade to 6.0.1 easily and with minimal risk if possible. If someone could give me a clear easy to understand step by step guide that would be much appreciated. I have the Canadian H831 running android 7.0. Software Version is h83120a. If you need anymore info please let me know.
Thank you in advance
Click to expand...
Click to collapse
I use android 7 on my H850 and it's smooth, as I can see here, you're using the initial​ version of android 7 (20a). Have you try to check if there's any newer Nougat version of your model (H831) through OTA or LG brigde or kdz?
Sent from my SAMSUNG-SM-G891A using Tapatalk

ted presley said:
I use android 7 on my H850 and it's smooth, as I can see here, you're using the initial​ version of android 7 (20a). Have you try to check if there's any newer Nougat version of your model (H831) through OTA or LG brigde or kdz?
Sent from my SAMSUNG-SM-G891A using Tapatalk
Click to expand...
Click to collapse
I have checked for updates through the update centre and my phone says its up to date.

pepsiiperson said:
I have checked for updates through the update centre and my phone says its up to date.
Click to expand...
Click to collapse
You need to download the Android 6 kdz. You can check here for one specific to your model https://forum.xda-developers.com/lg-g5/how-to/list-lg-g5-stock-kdz-firmware-t3365941. Once you downloaded the kdz use LGUP or uppercut to flash it to your phone. If you're unable to successfully flash it (like it errors out every time), it may be that you can't downgrade to MM from N. I'd try to use LGUP first, but if you can't get it to work try uppercut. Read those threads for instructions on how to use the tools. Feel free to ask more questions if you have any and I'll try to answer. Hopefully this helps.

pepsiiperson said:
Hey yall! I hope this is in the right place, if not my apologies. I got myself a G5 and I love except i made a terrible mistake...I upgraded the system from Marshmellow 6.0.1 to Nougat 7.0 and my phone has had nothing but problems and glitches. I want and really need to downgrade this phone to 6.0.1 but I have no idea how and id rather not brick my phone. I have been over several forums already on this site and none of them have the same procedure. One says i need to download this another says i dont need that etc etc.I would like to downgrade to 6.0.1 easily and with minimal risk if possible. If someone could give me a clear easy to understand step by step guide that would be much appreciated. I have the Canadian H831 running android 7.0. Software Version is h83120a. If you need anymore info please let me know.
Thank you in advance
Click to expand...
Click to collapse
Here's another source for H831 KDZ files: https://lg-firmwares.com/lg-h831-firmwares/#more-1685 Links to a number of MM ROMs can be found there. I have no experience with the H831, but I have successfully downgraded from N to MM on my H850 with LGUP. You should be aware, though, that there have been a number of reports of downgrading problems with the G5.

Make sure you read instructions carefully! Downgrades are easy to hard brick aka all bad.
Sent from my LGE LG-H830 using XDA Labs

boot into recovery and make a full wipe. this should fix your problem.

can not boot into recovery .. i tried many time .. but one time it boots and says (erasing) and then reboots and continue normally !!
thanks man !!

Related

Is there a way to downgrade sm-850A back to Kit Kat?

My boyfriend's AT&T Galaxy Alpha just auto-updated to lollipop.. nothing seem to work correctly, even with a factory reset. Everything was working perfectly fine on Kit Kat. I was wondering is it possible to downgrade back to Kit Kat with this phone?
I have limited experience with Android. I know it is possible to do this for devices that is rooted (e.g my Galaxy S5 or my Nexus 7). But I don't quite know where to start for the SM-850A, where the device is not rooted.
pennywaltz said:
My boyfriend's AT&T Galaxy Alpha just auto-updated to lollipop.. nothing seem to work correctly, even with a factory reset. Everything was working perfectly fine on Kit Kat. I was wondering is it possible to downgrade back to Kit Kat with this phone?
I have limited experience with Android. I know it is possible to do this for devices that is rooted (e.g my Galaxy S5 or my Nexus 7). But I don't quite know where to start for the SM-850A, where the device is not rooted.
Click to expand...
Click to collapse
Hello,
Downgrading is not shown as an option, neither is someone working on a root exploit for either of the versions (KitKat and Lollipop in this case) so I guess you're stuck with the Lollipop version. Although its not that bad you could wait for someone to release a rooting method so it could get easier for you to downgrade but until then you're stuck :/ Sad to say there arent much choices with that model :/
Best regards,
James
Daentrod said:
Hello,
Downgrading is not shown as an option, neither is someone working on a root exploit for either of the versions (KitKat and Lollipop in this case) so I guess you're stuck with the Lollipop version. Although its not that bad you could wait for someone to release a rooting method so it could get easier for you to downgrade but until then you're stuck :/ Sad to say there arent much choices with that model :/
Best regards,
James
Click to expand...
Click to collapse
Thanks James! yeah I know this model doesn't have a root and I don't think it will ever be an option (never say never but meh!)... But curious was it possible to downgrade without a root. Thanks for answering my question I like the phone, I did buy it for myself (and the bf too).. but I returned it after seeing there was no root... but the bf kept his...now he is hating it!
Did you tried to download your stock KK ROM and flash it with odin??
Mr.Nice.ba said:
Did you tried to download your stock KK ROM and flash it with odin??
Click to expand...
Click to collapse
Hello,
The issue is that you cannot get the KitKat firmware from anywhere, nobody has ever tried to upload it at all, otherwise I would of recommended it for sure.
Best regards,
James
you should try to download the stock KK from http://www.sammobile.com/firmwares/database/SM-G850F/
damnostix said:
you should try to download the stock KK from http://www.sammobile.com/firmwares/database/SM-G850F/
Click to expand...
Click to collapse
Hello,
As she've stated, her phone model is SM-G850A, AT&T model, not international one.
Best regards,
James
Daentrod said:
Hello,
As she've stated, her phone model is SM-G850A, AT&T model, not international one.
Best regards,
James
Click to expand...
Click to collapse
Hello, I'm downloading the kit Kat firmware for 850m, do you think it could work if I do the downgrade? I don't like this lollipop, please help
dont even try it ,you vill brick your phone 850M is Exynos CPU your nearest device is 850S Snapdragon CPU
but modem & kernal will not be funcsing with your phone??!!
but I dont recommend to do this

How to flash a stock LG G5 rom

Hi there !
As a LG newbie, I'm a little afraid about rom flash...
I already flashed rom on Samsung devices, Oneplus devices, HTC devices, and that always was in recovery, or with easy to use softwares (Odin is pretty easy, actually).
And there are tons of tuto about those devices.
But right now, I've got my G5 (h850) with unlocked bootloader, twrp and root, but a V10a. And I want to get up to date rom, with systemless root.
Looking for tuto, I'm finding things talking about LGUP and LG Flash, KDZ and TOT, and I'm lost
So can someone link me a explicit tuto to flash my G5 back to a stock and up to date rom, without root ?
The goal is, of course, to get what I want, but also understanding what I'm doing.
Thanks in advance.
RealLordK1 said:
Hi there !
As a LG newbie, I'm a little afraid about rom flash...
I already flashed rom on Samsung devices, Oneplus devices, HTC devices, and that always was in recovery, or with easy to use softwares (Odin is pretty easy, actually).
And there are tons of tuto about those devices.
But right now, I've got my G5 (h850) with unlocked bootloader, twrp and root, but a V10a. And I want to get up to date rom, with systemless root.
Looking for tuto, I'm finding things talking about LGUP and LG Flash, KDZ and TOT, and I'm lost
So can someone link me a explicit tuto to flash my G5 back to a stock and up to date rom, without root ?
The goal is, of course, to get what I want, but also understanding what I'm doing.
Thanks in advance.
Click to expand...
Click to collapse
http://forum.xda-developers.com/lg-g5/how-to/info-autos-g5-thread-t3350648 and http://forum.xda-developers.com/lg-g5/how-to/lg-g5-to-stock-t3369959
Both threads explain how to flash a kdz firmware using lgup.
Killua96 said:
http://forum.xda-developers.com/lg-g5/how-to/info-autos-g5-thread-t3350648 and http://forum.xda-developers.com/lg-g5/how-to/lg-g5-to-stock-t3369959
Both threads explain how to flash a kdz firmware using lgup.
Click to expand...
Click to collapse
Hum.
My bad, I forgot to said I'm a linux user.
Thoses threads are for windows users, right ?
Do I need to get a windows computer to do it, or is there a way to achieve it with linux ?
RealLordK1 said:
Hum.
My bad, I forgot to said I'm a linux user.
Thoses threads are for windows users, right ?
Do I need to get a windows computer to do it, or is there a way to achieve it with linux ?
Click to expand...
Click to collapse
You can use a virtual machine, but the tools work only with Windows and afaik there are no tools for Linux

H831 - Revert from nougat to marshmallow?

I have an LG G5 H831 from WIND/Freedom mobile which I recently upgraded to Nougat.
For some reason I don't like the new update and I'd like to revert back to the stock firmware. Is this possible?
I've looked around this forum and I couldn't find anything helpful.
Please help.
Jerry+ said:
I have an LG G5 H831 from WIND/Freedom mobile which I recently upgraded to Nougat.
For some reason I don't like the new update and I'd like to revert back to the stock firmware. Is this possible?
I've looked around this forum and I couldn't find anything helpful.
Please help.
Click to expand...
Click to collapse
I agree. Android v7 is the Windows ME of mobile operating systems. Too many great features removed, excused by positive sounding mumblings and overbearing rhetoric.
If you can find the LG-H831 DLL for LGUP then you can flash a H83110d_00_0711.kdz ROM image (you can find or I can put up for you). I cannot find a H831 DLL for LGUP anywhere though so if anyone has one please let us know.
I'm a complete noob when it comes to flashing LG phones.
Is there a tutorial I can follow?
Where can I download the files needed?
I'm very happy with this phone btw. It's very snappy, works well and the camera is simply awesome!
It seems to me that Nougat is using more RAM than Marshmallow and that concerns me a bit.
I forgot to mention something.
Few days ago I was able to find the KDZ files here, but they were for Rogers/Fido. I was very cautious and I did not flash them.

Downgrading Marshmallow to Lollipop to use KingRoot (LG-K373)

After extensive searching, it's apparent that there is no method to root the LG Escape 3 (LG-K373). It seems KingRoot will provide temp root, but only to cause problems and random reboots. My understanding is that KingRoot will not work effectively with a locked bootloader on Marshmallow.
MY QUESTION: Is is possible to downgrade Android to Lollipop in order to achieve root on this device.
There doesn't appear to be any real community/interest in obtaining root on this device, although with it's recent release as a promotional device on Cricket I would assume more users will be showing up.
Is it simply Android 6 w/ the locked bootloader that is keeping the device from being able to achieve root?
If so, I would greatly appreciate a point in the right direction. Also, if there are any threads I'm missing in regard to this device?
THANK YOU and would REALLY appreciate any help with this device.
does ur device has official lollipop? If yes .
Flash it
Revantark said:
does ur device has official lollipop? If yes .
Flash it
Click to expand...
Click to collapse
It came w/ Marshmallow 6.0 I haven't even begun to track down the required Lollipop files until I was at least partly sure it would work. I'm new to LG, although I've downgraded with Samsung and Motorola in the past without much issue. I guess the first thing is to figure all of the flash files I'll need.
The real question is assuming I can get it backed down to Lollipop with Rooting be possible?
THANKS!!!!
spyder5157 said:
It came w/ Marshmallow 6.0 I haven't even begun to track down the required Lollipop files until I was at least partly sure it would work. I'm new to LG, although I've downgraded with Samsung and Motorola in the past without much issue. I guess the first thing is to figure all of the flash files I'll need.
The real question is assuming I can get it backed down to Lollipop with Rooting be possible?
THANKS!!!!
Click to expand...
Click to collapse
No man i think u cant achieve root on this device. If u try to root ur device will brick. Since ur device came with Android 6 u cant downgrade to lollipop.
So u cant downgrade and root ur device.
Revantark said:
No man i think u cant achieve root on this device. If u try to root ur device will brick. Since ur device came with Android 6 u cant downgrade to lollipop.
So u cant downgrade and root ur device.
Click to expand...
Click to collapse
Thank you for the reply. I am just shocked that every step of the way is failure. What is the most surprising to me is that nearly all other LG devices can get root seemingly without much trouble. Even the flagship phones like the G6 (and even the ability to unlock the bootloader).
If I could just ask an opinion of those out there..... Does anyone think this is something that will happen in the future? (Root), or is there just not enough interest in the device to have a community putting any effort into it???
I've always had higher end phones of which I managed to break and decided to try one of these lower end phones. It just seems like there isn't enough of a community working on them... I would just like to think someone (smarter than me) will find a way to get root??
THANK YOU FOR YOUR REPLY. I thought maybe there were some flash files that would allow me to downgrade. I've been a bit out of the loop for a bit, so having some trouble catching up....I appreciate your help.

Back to official EU rom?

Hello. I came here for help. As i no longer focusing for phone rooting, i'm not able to switch back to stock rom for Mi 9T. Currently i have old MIUI 10.5 by xiaomi.eu 9.8.1 . I want to switch back to stock, most up to date version of ROM for this phone. I would like to ask how to do it. I'm pretty sure i need to update my firmware before flashing latest stock rom but i don't know which firmware. Can somebody post here up to date manual with steps how to do it? I also know about some MIUI program for Windows that can help but i saw many times it just hard bricked the device. I would appreciate some experienced user to tell me what to do.
I'm really sorry to ask here for this (newbie help) but as i said, i'm out of it for like 2 years now.
PS: It would be nice to don't have anti-rollback protection (just in case)
Pheggas said:
Hello. I came here for help. As i no longer focusing for phone rooting, i'm not able to switch back to stock rom for Mi 9T. Currently i have old MIUI 10.5 by xiaomi.eu 9.8.1 . I want to switch back to stock, most up to date version of ROM for this phone. I would like to ask how to do it. I'm pretty sure i need to update my firmware before flashing latest stock rom but i don't know which firmware. Can somebody post here up to date manual with steps how to do it? I also know about some MIUI program for Windows that can help but i saw many times it just hard bricked the device. I would appreciate some experienced user to tell me what to do.
I'm really sorry to ask here for this (newbie help) but as i said, i'm out of it for like 2 years now.
PS: It would be nice to don't have anti-rollback protection (just in case)
Click to expand...
Click to collapse
This guide should help you. This is for locked bootloaders but the main procedure is almost the same:
[GUIDE] Flash Official Xiaomi Firmwares with a locked bootloader GLOBAL/CN
Hi, in this guide I will show you how to flash different official firmware (Global and CN) without having to unlock the bootloader. DISCLAIMER: Just to be sure, I am not responsible for any bricks or damage to your smartphone. Use this guide at...
forum.xda-developers.com
As your bootloader isn't locked anymore the whole thing is less risky.
Wolfcity said:
This guide should help you. This is for locked bootloaders but the main procedure is almost the same:
[GUIDE] Flash Official Xiaomi Firmwares with a locked bootloader GLOBAL/CN
Hi, in this guide I will show you how to flash different official firmware (Global and CN) without having to unlock the bootloader. DISCLAIMER: Just to be sure, I am not responsible for any bricks or damage to your smartphone. Use this guide at...
forum.xda-developers.com
As your bootloader isn't locked anymore the whole thing is less risky.
Click to expand...
Click to collapse
Thank you.

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