Downgrading a Att LG G4 from MM to LP? - G4 Q&A, Help & Troubleshooting

Came with MM from the factory and I want to roll back for root. The build number is MRA58k and software H81020n. Anyone know if it will work and if so would anyone happen to have the proper kdz or tot I need? Thank guys.

Found this on another thread
I was looking for the same info, i haven't tried it but they claim to have done it successfully.

lwg45714 said:
Came with MM from the factory and I want to roll back for root. The build number is MRA58k and software H81020n. Anyone know if it will work and if so would anyone happen to have the proper kdz or tot I need? Thank guys.
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Click to collapse
i did mine you just need LGUP.. i have TMOBILE and i can only downgrade to LP 10N.. lower then that will brick my phone... or go back to MM 20i.
http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848

raptorddd said:
i did mine you just need LGUP.. i have TMOBILE and i can only downgrade to LP 10N.. lower then that will brick my phone... or go back to MM 20i.
http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
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Hello friend, i found out that my antirollback is 0, so i tried via LGUP to downgrade from MM to LP, but still get error 0x2000, can you help me?

LoneWanderer_97 said:
Hello friend, i found out that my antirollback is 0, so i tried via LGUP to downgrade from MM to LP, but still get error 0x2000, can you help me?
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not familiar with that error. but seems like maybe you cant you need to find out searching if others have by using same variant.. i did find 2 links
https://forum.xda-developers.com/showpost.php?p=68917209&postcount=2261
https://forum.xda-developers.com/showpost.php?p=65346756&postcount=36
post your question in first link..

Related

Help, I rooted my phone and I get a warning everytime i open it

Hello
So after foolishly updating to Marshmellow and discovering that all my apps no longer update in the background, i flashed my device to the LG G4 V10D-226-01 software version, the 10D Europe Open from the LG g4 "Go back to stock rom" thread.
Problem is, everytime i open my phone i get "Warning: Current version is not available for user. Cant find matched cust for Nt-code mcc/mnc[22601],subset[ff]. I have looked both on google and here and everything i found was for the G3 model and it involved using a "custom restore" image. but no explanation on how to use it, its not a KDZ so i cant flash it.
I'm pretty new to all this and everything i wanted was to go back to my Lollipop variant after seeing how Marshmellow behaved on my phone. (not auto updating my background apps).
I appreciate any help you guys provide.
Thanks
u cant downgrade once u go to Marshmallow. Its a security thing tht was updated in the latest firmware b4 Marshmallow came out. Ur gona hav to start all over again wth the latest KDZ b4 Marshmallow
I reformated into a Lollipop KDZ by flashing my ROM from the "Go back to stock" thread. Problem has appeared after i did that. I am currently on Lolipop v10D
nobody has any idea on how i can solve this issue?
Ashdrake said:
nobody has any idea on how i can solve this issue?
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Click to collapse
download the kdz file for your device from here and flash it using LG UP here. all will be fine. i downgraded from MM to LP after MM had big battery drain. many people have downgraded using this method.
reg66 said:
download the kdz file for your device from here and flash it using LG UP here. all will be fine. i downgraded from MM to LP after MM had big battery drain. many people have downgraded using this method.
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Click to collapse
i did that, problem is, i'm from Romania so i dont see my countries ROM there. I have used the classic open eu one and the barebones one and no matter which i use i still get that warning when i open my phone.
bump to the top again, anyone knows what i should do?

26A

Just got updated to 26A this morning, but haven't bothered to check to see what the "improvements" are.
Same here
Sent from my VS986 using XDA-Developers mobile app
Verizon LG G4 software site
Software Version: VS98626A
The current software update gives you the most up to date Androidâ„¢ security patch on your device.
Going from 25A to 26A was 37.3 MB. It increased Security Patch Level to 2016-06-01. No version jump. No new apps or apparent changes.
HPloco said:
Verizon LG G4 software site
Software Version: VS98626A
The current software update gives you the most up to date Androidâ„¢ security patch on your device.
Going from 25A to 26A was 37.3 MB. It increased Security Patch Level to 2016-06-01. No version jump. No new apps or apparent changes.
Click to expand...
Click to collapse
I'm a little behind on information. Does the 26a stop me from downgrading to 13b with LGUP? I was rooted by using the LGUP to downgrade but recently went back to stock with the lg flash tool. I may decide to go back to rooted if it permits.
---------- Post added at 01:46 AM ---------- Previous post was at 01:30 AM ----------
HPloco said:
Verizon LG G4 software site
Software Version: VS98626A
The current software update gives you the most up to date Androidâ„¢ security patch on your device.
Going from 25A to 26A was 37.3 MB. It increased Security Patch Level to 2016-06-01. No version jump. No new apps or apparent changes.
Click to expand...
Click to collapse
I'm a little behind on information. Does the 26a stop me from downgrading to 13b with LGUP? I was rooted by using the LGUP to downgrade but recently went back to stock with the lg flash tool. I may decide to go back to rooted if it permits.
phonepie said:
I'm a little behind on information. Does the 26a stop me from downgrading to 13b with LGUP? I was rooted by using the LGUP to downgrade but recently went back to stock with the lg flash tool. I may decide to go back to rooted if it permits.
---------- Post added at 01:46 AM ---------- Previous post was at 01:30 AM ----------
I'm a little behind on information. Does the 26a stop me from downgrading to 13b with LGUP? I was rooted by using the LGUP to downgrade but recently went back to stock with the lg flash tool. I may decide to go back to rooted if it permits.
Click to expand...
Click to collapse
I took the 26a OTA after getting my phone back from LG with a new main-board. Last night I decided to downgrade to 13b kdz and did not encounter any issues. I have already flashed rootedsystem img and everything works like a charm.
Martin4XDA said:
I took the 26a OTA after getting my phone back from LG with a new main-board. Last night I decided to downgrade to 13b kdz and did not encounter any issues. I have already flashed rootedsystem img and everything works like a charm.
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Click to collapse
Thanks for the info and reassurance!
phonepie said:
Thanks for the info and reassurance!
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Welcome!
The "security update" broke my wifi calling. I've tried rebooting, turning it off and on, turning wifi off and on... no luck... and of course i applied this update while visiting my family where cell reception is awful.
Does anyone know the LG download link to the 26A KDZ? I flashed the 25A kdz and it shows as Modified even after a Recovery Menu reset...connectivity and battery drain major issues also...
Did you find a link?
Hi, Bro, did you find a link for the download yet!? I am looking for the kdz files as well!!!
Looking for kdz as well, thanks.
Quote from Martin -"I took the 26a OTA after getting my phone back from LG with a new main-board. Last night I decided to downgrade to 13b kdz and did not encounter any issues. I have already flashed rootedsystem img and everything works like a charm."
Thanks for the info, I am in exactly the same situation getting a 25a phone with new board back from LG, now getting prompted every day for 26a and didn't want to lock myself out of a downgrade, not that I am going to do it at the moment.
helloworld25234 said:
Quote from Martin -"I took the 26a OTA after getting my phone back from LG with a new main-board. Last night I decided to downgrade to 13b kdz and did not encounter any issues. I have already flashed rootedsystem img and everything works like a charm."
Thanks for the info, I am in exactly the same situation getting a 25a phone with new board back from LG, now getting prompted every day for 26a and didn't want to lock myself out of a downgrade, not that I am going to do it at the moment.
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Click to collapse
No problem!
Martin4XDA said:
I took the 26a OTA after getting my phone back from LG with a new main-board. Last night I decided to downgrade to 13b kdz and did not encounter any issues. I have already flashed rootedsystem img and everything works like a charm.
Click to expand...
Click to collapse
Hey Martin, would you mind sharing which method you used to downgrade and root? I've rooted phones in the past but the g4's process is a little foreign to me. Thanks a ton.
Spencer Y said:
Hey Martin, would you mind sharing which method you used to downgrade and root? I've rooted phones in the past but the g4's process is a little foreign to me. Thanks a ton.
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Click to collapse
I used LGUP first to downgrade from 26a to 13b kdz which is the original system ROM. I used the "Refurbish" method which completely erases everything before flashing the KDZ.
Once 13b KDZ was flashed I used the LG Root to flash the rootedsystem .img.
I can't post any links here yet but if you do a quick search on this forum you will find detailed instructions on how to proceed and all the necessary files you want to download. It's really not that difficult, just make sure you read and understand what you're gonna do so as to minimize any chance for mistakes.
Happy flashing!
Bro, did you find the kdz for 26A???
Javier Bracho said:
Bro, did you find the kdz for 26A???
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Click to collapse
http://forum.xda-developers.com/showpost.php?p=68336210&postcount=5
Thanx
Thanks a lot, bro!!! Downloading it now!

Welp had a problem with 2aa...... Dont try to downgrade.

So like the title says had a problem with 2aa tried to downgrade and it does not work. Currrently soft bricked and stuck in download mode awaiting 2aa kdz...
Any success so far downgrading from 2AA? Gotta get rid of this. If you do get a KDZ I would very much appreciate it!
People have successfully downgraded using LGUP software.
Details? How did you try to downgrade?
I've downgraded from 2BA to 13B with LGUP and it can be done with 2AA successfully also:
https://forum.xda-developers.com/showpost.php?p=72773178&postcount=164
phillyvapor said:
So like the title says had a problem with 2aa tried to downgrade and it does not work. Currrently soft bricked and stuck in download mode awaiting 2aa kdz...
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Click to collapse

LG-G4 us991 downgrade to lollipop?

I'm trying to downgrade my G4 from marshmallow back to lollipop. My anti-rollback # is 2, and according to this as long as the anti-rollback # is the same on both the installed version and the kdz, flashing the downgrade doesn't hard brick the device.
So far I've been unable to either find one, or clarify if one exists for my variant or not. Can anyone help? Thanks.
In any event ...
2PiSquared said:
I'm trying to downgrade my G4 from marshmallow back to lollipop. My anti-rollback # is 2, and according to this as long as the anti-rollback # is the same on both the installed version and the kdz, flashing the downgrade doesn't hard brick the device.
So far I've been unable to either find one, or clarify if one exists for my variant or not. Can anyone help? Thanks.
Click to expand...
Click to collapse
In any event ... if you do happen to find an LP stock image to try, make sure you use LGUP-NEW (https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803) to downgrade to the stock Lollipop image as it should throw throw up an error regarding the anti-rollback version roll back and not proceed with the rollback, thereby avoiding any brick worries for you ...
You may have to do a bit of trial and error but it would help if you post your exact software version that you are on now for anyone to assist you in at least pointing you in the right direction for LP kdz's to try.
sdembiske said:
In any event ... if you do happen to find an LP stock image to try, make sure you use LGUP-NEW (https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803) to downgrade to the stock Lollipop image as it should throw throw up an error regarding the anti-rollback version roll back and not proceed with the rollback, thereby avoiding any brick worries for you ...
You may have to do a bit of trial and error but it would help if you post your exact software version that you are on now for anyone to assist you in at least pointing you in the right direction for LP kdz's to try.
Click to expand...
Click to collapse
Oh, so LGUP-NEW pretty much let's you throw any kdz at the device and if it would have normally bricked the device, instead it comes up with an error? That's pretty neat.
My specific software version US99125a, and if it helps at all, my end goal is to hopefully root my device.
Well, not any old kdz ...
2PiSquared said:
Oh, so LGUP-NEW pretty much let's you throw any kdz at the device and if it would have normally bricked the device, instead it comes up with an error? That's pretty neat.
My specific software version US99125a, and if it helps at all, my end goal is to hopefully root my device.
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Click to collapse
Well, not any old kdz ... You want to keep to US Cellular versions. This site lists a couple of LP kdz's:
https://boycracked.com/2016/10/14/official-lg-g4-us991-us-cellular-stock-rom/
I suggest you check out: [Discussion] US Cellular us991 at https://forum.xda-developers.com/g4/general/cellular-us991-t3151051
read the posts and then post any questions you might have there and google XDA - LG G4 US991 for additional input.
That's all I got for you ...
2PiSquared said:
I'm trying to downgrade my G4 from marshmallow back to lollipop. My anti-rollback # is 2, and according to this as long as the anti-rollback # is the same on both the installed version and the kdz, flashing the downgrade doesn't hard brick the device.
So far I've been unable to either find one, or clarify if one exists for my variant or not. Can anyone help? Thanks.
Click to expand...
Click to collapse
Hey, don't want to revive an older thread but, were you successful in downgrading? My anti rollback is at #2 as well..
has anyone been able to downgrade? i got #2 rollback and can't get over it

Verizon LG G4 VS9862BA Root Options

Hello everyone,
I have looked everywhere on the threads, and it seems like I can't find any root information on my VS9862BA software version. I read in a thread that downgrading from MM to LL on a 2AA will cause the phone to be bricked. Is this true for the 2BA as well? Can I downgrade my G4 and then root like a normal G4? Help is greatly appreciated.
Nope. You have go back to 5.1 to ROOT and stay in 5.1
Verzion has made it impossible after 5.1 to ROOT but for other companies like AT&T, Etc. is Easy
Yes, you can downgrade from 2BA to 13B using LGUP PC software tool, then root using the methods posted in the VS986 XDA section.
spodermaine said:
Hello everyone,
I have looked everywhere on the threads, and it seems like I can't find any root information on my VS9862BA software version. I read in a thread that downgrading from MM to LL on a 2AA will cause the phone to be bricked. Is this true for the 2BA as well? Can I downgrade my G4 and then root like a normal G4? Help is greatly appreciated.
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Click to collapse
Vs 986 root
divineBliss said:
Yes, you can downgrade from 2BA to 13B using LGUP PC software tool, then root using the methods posted in the VS986 XDA section.
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Click to collapse
Hi
I have an LG vs986 on 2ba I want badly to root in order to get 4g lte on T-mobile.
I tried to downgrade to 13b but got bricked and stuck on dl mode, thank god I was able to flash it back to 2ba.
Some threads on xda suggest that it's possible to downgrade to 13b only early version of mm not latest like 2ba.
Is that true?
If not please post some guide lines on how to do it.
Thanks for any help.
To what Root on MM? Just not the latest version? I've tried many ways but All Failed. When my time with Verizon is up I'm going to T-mobile or AT&T
divineBliss said:
Yes, you can downgrade from 2BA to 13B using LGUP PC software tool, then root using the methods posted in the VS986 XDA section.
Click to expand...
Click to collapse
have you done this personally on VS9862BA version cause i ended up having to flash back to MM after attempting downgrade...
That's my recollection and others have posted that they had successfully downgraded from 2BA to 13B in this thread too:
https://forum.xda-developers.com/verizon-g4/general/downgrade-mm-to-ll-lgup-t3322616/
You have to use the correct dll file referenced in the thread.
SPARTAN_TECH said:
have you done this personally on VS9862BA version cause i ended up having to flash back to MM after attempting downgrade...
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