Database Users

How to downgrade to previous firmware on LG G2?

At some point I had located a guide that could walk me through how to unroot and downgrade to a previous version after you were on firmware version 12B. I am currently rooted on firmware version 12B and running a custom ROM. I also have twrp installed. Could someone please point me to the guide I can't find again? My goal is to return the phone to 100% stock out of the box so I can avoid the OTA that was accepted during activation. Thank you in advance.

Surfman423 said:
At some point I had located a guide that could walk me through how to unroot and downgrade to a previous version after you were on firmware version 12B. I am currently rooted on firmware version 12B and running a custom ROM. I also have twrp installed. Could someone please point me to the guide I can't find again? My goal is to return the phone to 100% stock out of the box so I can avoid the OTA that was accepted during activation. Thank you in advance.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2432476
this maybe?
goes back to 100% stock, out of the box
I own tmo D801 at the moment.
I downloaded OTA last night, but didn't like it
so I used this method to go back to previous version of the firmware (the very first one)
hope this helps?

I found what i needed....thank you very much.

ZVC to ZVA?
ILLHYHL said:
http://forum.xda-developers.com/showthread.php?t=2432476
this maybe?
goes back to 100% stock, out of the box
I own tmo D801 at the moment.
I downloaded OTA last night, but didn't like it
so I used this method to go back to previous version of the firmware (the very first one)
hope this helps?
Click to expand...
Click to collapse
I'm trying to Root a completely stock ROM with the latest OTA (ZVC). Unfortunately I'm not having any luck using ioroot25.zip on terminal. I run root.sh and get through 2 prompts until it tells me no firmware available yet. Any advice or help is much appreciated.
Thanks!

Hello Friends,I have a problem I changed my lg g2 from LGLS980ZV8 to the LGD802 model but now it has sensor problem now I want it back I want my LGLS980ZV8 guyz please help me.

[Q] Downgrade LG g2 D802 from official 4.4.2 to official 4.2.2

I have tried exact steps for the reinstalling stock 4.2.2 but it does not work.
Please help i cannot stand the stupid Audio problem for 4.4.2

rugbi82 said:
I have tried exact steps for the reinstalling stock 4.2.2 but it does not work.
Please help i cannot stand the stupid Audio problem for 4.4.2
Click to expand...
Click to collapse
Was just about to post the same. Please help!

+1

you must download tot rom file then flash it using flashtool

I'm a complete newb concerning flash/installing software and especially reverting back to 4.2.2.. I have the D802 International version (bought it off Amazon) its the UK edition I believe. I'm trying to find the correct firmware but they are all so cryptic I'm worried I'll download the wrong one ( I have the 32GB version) and brick my phone..
Is there any kind of reliable guide I can use to do this process? Or better yet some kind of automated piece of software?
Or would it be best to just wait for LG to release an update to fix it?
If it wasn't such a big issue ( I use my headphones every day constantly..) I would wait but I don't think I can..
Any information would help.

You can try the steps described in http://forum.xda-developers.com/showthread.php?t=2432476

mlm1102003 said:
you must download tot rom file then flash it using flashtool
Click to expand...
Click to collapse
Hi, do you know if I can downgrade from custom 4.4.2 kitkat to custom or official 4.2.2 jelly bean on lg g2 D802? Is it possible with TWRP or with manual flash?
thanks!

losthorizon21 said:
Hi, do you know if I can downgrade from custom 4.4.2 kitkat to custom or official 4.2.2 jelly bean on lg g2 D802? Is it possible with TWRP or with manual flash?
thanks!
Click to expand...
Click to collapse
yes you can
using the topic which "ulihh" said
http://forum.xda-developers.com/showthread.php?t=2432476

Downgrade help
How to downgrade lollipop 5.0.2 to stock kitkat 4.4.2
I have d802 my phone is root and i have instal twrp but dont know how to flash and so...please tutorial step by step..ty

[Q] new Sprint LG G2 - questions

Hi -
I have been an iphone guy for last 2 years and Just purchased a new Sprint LG G2 phone from ebay which was sim unlocked. I am from india.
After purchasing found out that this is not factory unlocked and it was rooted and then sim unlocked. After hearing this, i am scared to make any changes on the phone thinking that i might lose my carrier network which i am currently using.
I am currently on:
- Android Version: 4.2.2
- Baseband version: M8974A-AAAANAZM-2.0.20018
- Kernel Version: 3.4.0
- Build number: JDQ39B
- Software version - LS980ZVA
I am kind of intrested in installing different kind of ROM's that are available however i am scared that i might lose simunlock.
Can someone please guide me on things that i can do with this device without losing the unlock?
I am complete newbee and helping me overcome this fear would be appreciated.
Thanks
Sam

Well you can check out the permanent SIM unlock which is for Sprint g2 and even if you switch roms it should still work
Sent from my LG-D800 running stock kk, rooted with philz using XDA app

XxZombiePikachu said:
Well you can check out the permanent SIM unlock which is for Sprint g2 and even if you switch roms it should still work
Sent from my LG-D800 running stock kk, rooted with philz using XDA app
Click to expand...
Click to collapse
Thanks !!
I still do have a question on what is ZVA, ZV7 or ZV8...........It says in the forum that i need to have ZV8 or ZV7 to install other Roms.
What are the pre-requisites before i install any Custom Roms?
Regards

salim1001 said:
Thanks !!
I still do have a question on what is ZVA, ZV7 or ZV8...........It says in the forum that i need to have ZV8 or ZV7 to install other Roms.
What are the pre-requisites before i install any Custom Roms?
Regards
Click to expand...
Click to collapse
well I really don't know much about the sprint g2 I do know that zv7 was the original firmware that shipped with the sprint g2 and then there was the update to zv8 and then zva and the latest is zvc, zv7 was the easiest to exploit for recovery and zv8 is still exploitable but zva is exploitable but can only use custom roms based on zva and zvc is not exploitable, each of theses is the different radio/baseband for each new update on the sprint g2, you can look around for how to flash roms with the sprint g2 or ask around, I will look around and let you know if I find anything

XxZombiePikachu said:
well I really don't know much about the sprint g2 I do know that zv7 was the original firmware that shipped with the sprint g2 and then there was the update to zv8 and then zva and the latest is zvc, zv7 was the easiest to exploit for recovery and zv8 is still exploitable but zva is exploitable but can only use custom roms based on zva and zvc is not exploitable, each of theses is the different radio/baseband for each new update on the sprint g2, you can look around for how to flash roms with the sprint g2 or ask around, I will look around and let you know if I find anything
Click to expand...
Click to collapse
Thanks XxZombiePikachu! :good:

[Q] 4.4.2 -> 4.4.5 -> Lollipop? (No OTA) [G900A]

Hello,
I just got a Galaxy S5 ATNT (SM-G900A) version with firmware 4.4.2 and build number KOT49H.G900AUCU2AND3
I want to upgrade it to Lollipop, but from what I had seen, I need to upgrade it to 4.4.4 first, How can I achieve that?
I'm not on the ATNT Network(in result, OTA is not working), As i'm living abroad. My phone is factory unlocked.
I had also found an OTA .zip but it's a NG3 one, so I'm not sure if it's compatible with my device.
Thanks guys! (I'm hoping I could do this via the stock recovery way)
*I mean 4.4.4 at the title

I believe theres some ota zips but im not certain theres a way available thats been posted to do this, most of them use odin to get to stock and then using ota to update, or updating to get root, i havent seen one about just manually updating to 5.0, go give the att s5 general section a peek. Otherwise i'd ask the mods to move this over to the att q&a section, im sure one of the devs in the att s5 section would be happy to help.
Sent from my SAMSUNG-SM-G900A using Tapatalk

Oh, i was incorrect, yes there is a lollipop OTA dump, check the att s5 general section, should be able to sideload.
Sent from my SAMSUNG-SM-G900A using Tapatalk

Hey! Thank you for the reply,
I tried one of the lollipop ota .zips
Named
ATTS5Lollipop.zip
It doesn't install though, when I restart the device it's still on KitKat
Plus the manual ota .zips are for NG3s only,
Are those compatible with my device? (ND3)

NVM,
Downgraded to NCE,
Then upgraded to NG3
Then upgraded to OA1
Then to Lollipop.

Got an LG G2, would like to flash stock/costume roms

hey i got an LG G2, D801 model, with stock android 4.2.2. now i would like to perhaps flash stock roms, or costume ones, but i have no idea how to start and if there is a software to flash stocks and such and what do i need to install for costume roms. thanks

Nexus4FLESH said:
hey i got an LG G2, D801 model, with stock android 4.2.2. now i would like to perhaps flash stock roms, or costume ones, but i have no idea how to start and if there is a software to flash stocks and such and what do i need to install for costume roms. thanks
Click to expand...
Click to collapse
Dude, you have to read some basic things to understand, but to give you a direction:
Here's a generell list of guides and fixes. It has a "root"- and a "recovery"- section. Both are absolutely necessary. Go here first.
Here's a list of custom roms. There are stock-roms, stock-based-roms and completely custom-roms. I prefer stock-based-roms because the devs added some extra features and you have full driver support.
I hope this helps a little bit.

Jan Philipp said:
Dude, you have to read some basic things to understand, but to give you a direction:
Here's a generell list of guides and fixes. It has a "root"- and a "recovery"- section. Both are absolutely necessary. Go here first.
Here's a list of custom roms. There are stock-roms, stock-based-roms and completely custom-roms. I prefer stock-based-roms because the devs added some extra features and you have full driver support.
I hope this helps a little bit.
Click to expand...
Click to collapse
i have read some of there before, but i'm yet to understand it, because my previous phone was nexus 4, installing roms and such was fairly easy, and with this LG G2, there are complicated things even as flashing roms, not all models the same and such, and im afraid to brick my phone because of that, i also have a D801 model - D80110C and i have heared that there are different version of things and such.
anyway, what will be the best way to flash stock lollipop / stock based roms and later flash back to 4.2.2 if something goes wrong? thanks

I just did this, in my experience the best way is
1) updating to stock lollipop
2) rooting via oneclickroot
3) flashing twrp via AutoRec (correct version)
4) flashing twrp 3.x blastagator via old twrp
5) flashing desired rom
There is one caveat though, the root process will install the correct (old) SuperSU that works with AutoRec, but google play may update it beforehand so that AutoRec cannot work. My fix was to install AutoRec before the root and then go into airplane mode and do it all in one go. Also, you should always check if you got the correct carrier version of your software.
Going back to kitkat? This should not be necessary imo, but if you mess something up you can always flash the stock .kdz files (lp or kitkat) via download mode and lg flash tool 2014. This phone is almost unbrickable.
Hope this helps and after years of G2 roms I can finally give something back.

blueb34r said:
I just did this, in my experience the best way is
1) updating to stock lollipop
2) rooting via oneclickroot
3) flashing twrp via AutoRec (correct version)
4) flashing twrp 3.x blastagator via old twrp
5) flashing desired rom
There is one caveat though, the root process will install the correct (old) SuperSU that works with AutoRec, but google play may update it beforehand so that AutoRec cannot work. My fix was to install AutoRec before the root and then go into airplane mode and do it all in one go. Also, you should always check if you got the correct carrier version of your software.
Going back to kitkat? This should not be necessary imo, but if you mess something up you can always flash the stock .kdz files (lp or kitkat) via download mode and lg flash tool 2014. This phone is almost unbrickable.
Hope this helps and after years of G2 roms I can finally give something back.
Click to expand...
Click to collapse
do you have a D801 model? i cannot update to lollipop through normal fota or lg pc suite, it doesnt see anymore updates
i have software version of D80110c, what are the last letters means in it? C/G/ and such,
and also how should i update to stock lollipop rom without bricking my phone? it seems that there is alot of room to ****up. thanks =]

I have d802 and could always update it to LP via LG software update in the phone settings.
10/20/30 is android version, 30 being lollipop. 30a/b/c/d is revision or carrier version I think.
I am not sure about D801, but if I was you, I would try to update to LP via official LG update, otherwise try to root+recovery with your existing kitkat (search the forums) or flash LP kdz from download mode (LG flash tool). Always make sure it works for d801 and your software version.
Then I would install a fast custom rom cause stock LP is rather slow.

blueb34r said:
I have d802 and could always update it to LP via LG software update in the phone settings.
10/20/30 is android version, 30 being lollipop. 30a/b/c/d is revision or carrier version I think.
I am not sure about D801, but if I was you, I would try to update to LP via official LG update, otherwise try to root+recovery with your existing kitkat (search the forums) or flash LP kdz from download mode (LG flash tool). Always make sure it works for d801 and your software version.
Then I would install a fast custom rom cause stock LP is rather slow.
Click to expand...
Click to collapse
i tried to update through lg, but it showed me that i am "UP TO DATE" might be because i bought it from someone who bought it in the US in cincenti bell ( and i dont live in the US, or close to it), the phone have a cincinetti bell rom, so i guess that why i cant update it through the phone like that. and i have a jelly bean 4.2.2 , not even kitkat. it is possible to flash a lollipop kdz just like that even if i have stock never tuched 4.2.2 ? thanks alot