yashsingh1/xdaforums huggingface dataset:
[G3 General] Lennyuk:
This guide is for use on rooted stock roms to restore the phone to a position where it will accept OTA updates.

Please note the following:

1. It does not wipe the /data/ partition of your device.

2. It will reinstall any bloat you have uninstalled including those apps that you carrier put into /data/

3. It will remove any files you have added to /system/ including root or other modifications

4. Any files you have "frozen" will stay disabled, you cannot unfreeze them without rooting again - this guide will be for a "full unroot" so there is an optional step below to unfreeze apps.

The Guide

1. Download LG PC Suite from LG's website - you must select model type before you do so, but as far as I can tell it downloads the same version regardless.

2. Update the app so it recognises the G3 - this should ask you to update automatically on opening the app, if not you can do it from the "help" menu.

(NB: if you have used some of the KDZ flashing methods on here you may have issues updating as your hosts file is probably altered to block the PC Suite gaining a connection).

3. Connect the phone via USB (the app allows for a wifi connection but this is very restrictive, you require a USB connection for this).

*OPTIONAL STEP* If you want to go back to a truly stock experience then unfreeze any apps you have frozen (I am unsure if having apps frozen will effect OTA installations, it should still work fine, in theory).

4. With the device connected go to the "phone" menu in PC Suite and select the option that says "Restore Upgrade Errors".

5. It will then scan your device, download the rom and begin flashing, this is all automatic without any further input from you, do not cancel it.

6. The phone will reboot when finished. You are now unrooted and unmodified and OTA's should work.

*OPTIONAL STEP* If you want to go back to 100% stock then its probably a good idea to factory reset your phone at this point - this will wipe your whole device (of course).

And there you have it, your quick(ish), painless method for being able to unroot to accept OTA's without requiring a wipe.
[G3 General] Protagoras:
Nice thanks Lenny, that may be handy. I'm supposed to receive mine today from Amazon.de, will play around a lot with root / unroot :)
[G3 General] Tarzan-:
Strange. Every time I click on restore errors it hangs for 30 secs and then LGpcsuite exe stopped working message and it stops. Any ideas ? I'm using windows 7 64bit and all drivers installed, pc recognizes phone.
[G3 General] Lennyuk:
Could be a conflict with something else - to get it working for me I had to delete all traces of LG from the pc - all LG apps, drivers (including using USBDeview) and start over.
[G3 General] medicus07:
First of all, thank you for your detailed tutorial. Yesterday I have had the same idea... can someone confirm this theory... though there is no update for international version yet, someone with the korean model?
[G3 General] Lennyuk:
I tested this theory yesterday, albeit without an OTA - it does replace all modified and removed files in /system/ as well as removing any files you have added such as root or xposed.

There is no reason for the phone to continue to report that it has been modified, certainly if you take my final optional step and couple this restore with a factory reset.
[G3 General] radicalisto:
Gotta love it when manufacturers make it simple to go back to 100% stock without any real messing around. Thanks for this :good:
[G3 General] Tarzan-:
Ok I fixed my issue, PC suite crashing by running it as admin on windows. When I run to "fix errors" it says I'm running latest version. When I check OTA on my phone there is an update which obviously don't run after download because I'm rooted. I'm out of ideas :confused:
[G3 General] Lennyuk:
fixing errors is a reflash to fix a problem, it shouldn't matter what version your on, are you sure you didn't click the check for updates button by error?
[G3 General] medicus07:
You should't have root access after using the fix upgrade function...
[G3 General] Tarzan-:
No, before fix upgrade. Actually I never get to download the firmware.

As I said I never get this option. It keeps on saying you have the latest version and that is it.
[G3 General] Lennyuk:
Can you screenshot the "phone" menu you are seeing on LG PC Suite and upload it here?
[G3 General] Tarzan-:
Attached both, before running and after running.
[G3 General] Lennyuk:
The latter screenshot, did it give you that message after "scanning the device"? It might be that it scanned your device, found nothing altered so then said you were ok?
[G3 General] Baccer:
Perfect

Lenny thx alot. I was waiting for that. Because I wanted to make sure I can have OTA and root.

great :highfive::good::)
[G3 General] Tarzan-:
See update available and I'm rooted.

Sent from G3
[G3 General] Lennyuk:
What happens if you go "check for updates" from PC Suite?
[G3 General] Tarzan-:
Same, You have the latest version. :confused:
[G3 General] Lennyuk:
Weird, no idea why it won't be working for you, I have only been able to test on the D855 and have had no such issues.

Hopefully someone else who has the FK versions can shed some light.
[G3 General] Tarzan-:
Thats the thing. If its the phone version's (using Korean version) issue then how come the PC Suite recognizes it ?
[G3 General] roirraW "edor" ehT:
Try LG Mobile Support's Repair option. It'll completely wipe your phone including user data and internal storage so have what you want to keep and to your Micro SD card.
[G3 General] 18lama:
I had rooted my phone long time ago. The software version at the time was 20H on D855 32GB version. Today I tried to unroot using your method using the PC Suite. And It worked!! :D

I had loads of problems with LG pc suite crashes on windows 10 desktop. But I kept trying and luckily I had fast enough internet so that the update downloaded very quickly and from then on there were no errors. Thank god!

Now I have updated to 20N. I am eagerly awaiting official M!! :)
[G3 General] marko-mb:
I had ROOT and forgot about it...

Now I received OTA 30c and it did not update because of root. (I removed battery and restarted). Than I used PC SUITE and it did the update as described.

But now every time phone says new software available. and it can update 10 times and still new update available because I downloaded OTA and than did the PC Suite update.

phone has latest fw all I want now is get rid of new SW message.

I believe there is some update.zip file as I remember form my G2. but as now I dont have root I cant find it.

Any solutions?

----

Solved: rooted, and deleted fota folder in cache. now I got message that device is rooted and cannot update. No more Update available notification!
[G3 General] bishop__x26:
hey guys.. im having boot loop issue in my lg g3... when i use the phone while its charging it works fine but the moment i unplug it it starts to reboot and repeating unless i take off the battery.. can somebody please tell me if i use this method with lg pc suite by choosing this method ''Restore upgrade errors'' will fix this issue ? thanks :o:o
[G3 General] Lennyuk:
Not sure, when you run this process on the D855 it doesn't check the software version at all, so the fact yours is doing that is quite odd.
[G3 General] Tarzan-:
Do you reckon its got to do with the fact that yours is European and mine Korean and we are both using the same PC Suite ? May be for Korean its a different one.

On the same note; What version is your PC Suite ? Mine is 5.3.17.20140521 (Build 18083)
[G3 General] Lennyuk:
Will have to wait until I get home to confirm my version. I suppose its possible, but then again yours is detecting your phone so I would be surprised if there was a differing version.

Just to double check, you didn't flash any custom roms or anything did you?
[G3 General] Tarzan-:
Nope, just rooted with towel root.
[G3 General] medicus07:
Just the same here... there´s no difference in software version.

And I tried another time... allthough I´m on the lastest firmware (there is no OTA for D855 yet) I can use the "upgrade repair" function, so that the PC suite downloads the current firmware again and installs it.
[G3 General] jusumgeezer:
Thanks for this. Been holding off on root until a proper method was posted. I have the 3UK D855 model so hopefully should have no issues
[G3 General] enyaj:
This is what I did two days ago confirming its working. i clicked on restore upgrade errors first then software upgrade. Took almost forever though to finish hehehe...
[G3 General] Lennyuk:
Glad it worked for you, thanks for the confirmation.

Yes the LG servers are not very fast!
[G3 General] Tarzan-:
Could someone please tell me if this method works for Korean branded G3 as well. I know Lenny has put a great guide and working for European version but I didnt see anyone with Korean model.

Sent from G3
[G3 General] helentsang1214:
that's weird..

I don't even have the option for LG Software when connecting to the PC with a USB cable

and I can't connect to the PC Suite now :(

I have tried installing PC program in the phone but nothing happened..

I changed to another PC and it worked perfectly

Thank you! :)
[G3 General] Schumi2004:
Wow, thanks for this good find!

Now I can just easy root and unroot w/o losing my data and the need to reinstall all apps and data!!!
[G3 General] p70shooter:
Someone reported on another thread that if you update via PC suite that it doesn't detect root and just flashes the update. Haven't tried it because got no update yet but it's good news if it works.

http://xdaforums.com/showthread.php?p=53968961

Plugging into PC suite allows me to upgrade the firmware, even though I am rooted. I didn't have to return it to stock. Of course the update removed the root so I have to root it again using towelroot after that.
[G3 General] Enddo:
has anyone had any luck applying an official OTA update after unrooting via this method?
[G3 General] Lennyuk:
Well there is a lack of OTA updates to try with at the moment, but in theory it should work fine (I have been told by someone who had an FK400 that this method did work for them)
[G3 General] Tarzan-:
Yeh it was me. I'm still subscribed to this thread to know if someone successfully use this method on Korean version.

Sent from G3
[G3 General] PastaBatman:
LG Suite ADB functions stalling

Hi guys. Has anyone experienced stalled processes in LG PC suite when doing a full backup? I've installed the most recent PC suite (v5.3.17.20140521) and drivers, and the phone connects fine for non-recovery mode backups, but when the phone restarts for full backup the process doesn't progress. I've uninstalled everything and tried again with no luck. The frustration is that it works fine when I use it on my work PC with the same version of windows (8.1) and pc suite, and on my friend's windows 7 machine, but not on my desktop at home. While the process was hung I tried adb commands using the C:\Program Files (x86)\LG Electronics\LG PC Suite\adb and they worked, and I used the ioroot adb for an 'adb backup' previously with no issues.

The primary concern for me is that if I need to do a 'fix update errors' and I have a similar hanging issue that I may brick my device. I could just use my work or friend's machine, but it isn't ideal.

Any clues?
[G3 General] larssonted86:
bleeding battery life after towelroot and art

Hey guys, this might not be the right place to ask, I ended up here cause I'm thinking out going back to stock after using towelroot d855.

Yesterday I used towelroot to get root and then installed adaway, after that I changed the phone to use ART instead of dalvik and sometime during the night my phone shut itself off and now it's bleeding battery life. Loosing 1% about every 2.5 minutes during YouTube watching and medium to heavy usage. Anyone else got a problem with battery life after root?
[G3 General] Lennyuk:
There is nothing that towelroot can do that would cause battery drain.
[G3 General] Bus Driver:
Maybe you can install wake lock detector to see what's causing the drain.
[G3 General] Protagoras:
My guess is that's because of ART. Or rather one of your app has a service that's not fully compatible with ART, so it causes some kind of locking / exceptions in the background that keeps the CPU busy and the battery draining.

I suggest switching back to Dalvik (with no other change) to see if that solves your problem.

If it doesn't, then the problem is elsewhere.
[G3 General] larssonted86:
Yeah I did that and the consumption went from 10% to 6% on a 25 min YouTube clip so it's a step in the right direction!
[G3 General] louvass:
Thanks but this method told me I have the lastest software and didn't do anything ?

---------- Post added at 12:08 PM ---------- Previous post was at 12:07 PM ----------

No tells me I have the latest software
[G3 General] Lennyuk:
Do you have a Korean device?
[G3 General] louvass:
No I don't still getting used to the LG side... thanks
[G3 General] easyfame:
[MENTION=2315688]Lennyuk[/MENTION]

The suite will not connect to my Verizon G3? I tried everything :(
[G3 General] Lennyuk:
Have you made sure that PC Suite is updated to the latest version? It might be that for some strange reason Verison or LG (or both) have decided to not let you use PC Suite for that device (but I would be surprised).
[G3 General] lexluthor:
I can't get my Verizon G3 to connect to PC Suite either. Tried on 2 different PCs too.

I did the update to the newest version. I installed the Verizon unified drivers that I got in the ioroot thread and also tried the drivers that can be downloaded through PC Suite. I also can't connect via wifi.

Any other way to get back to stock as it looks like I need to swap my phone as it's defective.
[G3 General] p70shooter:
LG flash tool.
[G3 General] lexluthor:
Worked perfectly. Thank you for replying.
[G3 General] silverio28:
this method will work if i root my G3 with PurpleDrake-Lite??

v10e
[G3 General] daleski75:
Yes it will.
[G3 General] silverio28:
Thanks

Enviado do meu LG-D855 através de Tapatalk
[G3 General] lexluthor:
Anyone gotten this to work on a Verizon G3 yet?
[G3 General] koppee1:
i just tried this....it told me...no upgrade errors found lol

but i was able to upgrade to 10e without removing root. I'm not sure if i needed to unfreeze apps, but i unfroze them all first.

note...towelroot does not work anymore after upgrading
[G3 General] raw2000j:
Will this uninstall twrp and restore stock recovery?
[G3 General] Alienuser:
Great post! This maybe the security blanket I was looking for before I root.
[G3 General] lexluthor:
Anyone with a Verizon g3 get this to work yet?
[G3 General] 20degrees:
Thanks for this.

G3
[G3 General] bcoop8:
So any word on the Verizon g3? I'm also interested if this will work for it as well as reset the root counter
[G3 General] txla:
No matter what I do, it still won't update the software. It still says it's rooted even after I reset my phone. Help please? Don't know what to do!
[G3 General] srbecker:
Lex, I have the Verizon version that I just rooted 5 minutes ago. There were no OTA's available at that time so how come your curious if anyone got it working for Verizon? Is there an update out that I missed? I didn't really have a reason to root so Im wondering if I should have left it stock, being so new and updates are sure to come. Oh well...
[G3 General] lexluthor:
Well, I'd like to have a method ready to go for when there is an OTA.
[G3 General] srbecker:
Oh ok. Makes sense lol, was just curious if you knew something I didn't. I haven't made any tweaks so Im going to try to do the update with root first as some said it should work unless you made system tweaks or framework change. If that doesn't work, then I guess ill find myself back here finding out how to unroot to do my OTA. I rooted my last 2 phones, but came into this one thinking I was not going to, but is it beneficial that I did?
[G3 General] lexluthor:
If you really want to go back, you can get to pure stock by following here:

http://xdaforums.com/showthread.php?t=2799647

I like having root. I run adaway to block ads, I use xposed to run various tweaking modules, I backup using Titanium.
[G3 General] AllstarE4:
I'm sending my phone to LG tomorrow to replace the screen (yep, already dropped and cracked it) and wanted to use this method to unroot. However, it just keeps telling me that I have the latest version installed like another member has posted - 85010D is what it shows I think. I used the PCSuite to uninstall every non-stock app, but I'm assuming it's still rooted. I was told by LG that they will completely wipe my phone and set it to stock like new so I'm guessing they will just do this step for me. Will it being rooted raise a flag with them or should it all go back to stock smoothly just as it should have for me here?
[G3 General] codified:
Did this but I still can't do OTA updates. The OTA update failed and now when I go to Software Update it says "continue update" and when I click on that I just get a toast saying "Send software update results to server"
[G3 General] john0699:
I have a big Problem!! I want to go back to stock and take the option restore upgrade errors! All went fine until the upgrade starts. It allways stopps and a window pop up and says "unplug usb pull out the battery and start the phone , after that plug the USB back in and click retry"!! My phone looks like that!

Please help

Gesendet von meinem LG-D802 mit Tapatalk
[G3 General] john0699:
[MENTION=2315688]Lennyuk[/MENTION]

Above i have posted something, can you help me please?!

Gesendet von meinem LG-D802 mit Tapatalk
[G3 General] codified:
Close LG PC suite and restart your computer. Pull the battery in the G3 and reboot it. Start all over again. It worked for me
[G3 General] keithleyson:
Try it again and hopefully it will work. This happened to my phone yesterday too and I was scared. However, I used the KDZ method to get back to stock and update to 10g on my D855 G3
[G3 General] john0699:
I have tried it and it did not work! My phone did not conect to LG PC Suite.

Gesendet von meinem LG-D802 mit Tapatalk

---------- Post added at 04:29 AM ---------- Previous post was at 04:26 AM ----------

Thanks for your help, i will try it after work! I hope KDZ method will work!!

Gesendet von meinem LG-D802 mit Tapatalk
[G3 General] Lennyuk:
This is odd, but basically what it looks like happened was the PC app crashed mid-flash, this can happen, but it should be recoverable if you just run it again.

I had the same issue the other day when using Flashtool 2014, but just running the tool again (or LG PC Suite would have worked too) it worked the second time, even from that screen.
[G3 General] BrunoSlivar:
I was root with ioroot, then unroot with this metod. My friend told me that my warranty is void. That i need to flash stock rom to get warranty back

sent via best phone LG G3
[G3 General] Valent1:
Thank you, I was able to update my phone, finally ;)

But now I cannot root it anymore with towelroot, is that normal ?
[G3 General] p70shooter:
Yep, use the purple Drake root. Should work no bother.
[G3 General] AllstarE4:
Is the towelroot dead as far as using it on anything newer than 10e since Geohot is now with Google?
[G3 General] john0699:
I have done it with the kdz method!! That's the only way it works for me! Thanks for your help.?

Gesendet von meinem LG-D855 mit Tapatalk
[G3 General] Valent1:
Thnaks it worked !
[G3 General] BrunoSlivar:
Someone?

sent via best phone LG G3
[G3 General] u1988:
It Clear the "ROOTED" to "UNROOTED" on the DM ?

Flashing Stock will fix it?

or use a guide like this on g2 ?

http://xdaforums.com/showthread.php?t=2715114

Can you please add to your first post all the Q&A to Prevent a returning of questions...?

Thank you!
[G3 General] Steph09:
Will this method work regardlesd of the rooting method? I am probably going to try purple drake so I want to be sure that I can go back to being unrooted so as to download OTA updates.

Edit: I tried purple drake and it worked on my D855 v10g :) I just now wanna know if this will work for me :) Thanks!
[G3 General] p70shooter:
Yep it will work. Also you probably don't need to unroot for the updates. Just do the update using pc suite.
[G3 General] Idan3523:
Yeaa worked!
[G3 General] Steph09:
Good to know, will try that when I see an update available! :)
[G3 General] txla:
What KDZ method did you use? I still can't update my G3 because it says it's rooted even though I've unrooted a long time ago. Help please?

---------- Post added at 02:54 AM ---------- Previous post was at 02:46 AM ----------

I need help PLEASE!! I can't update my phone cause it says it's rooted. When I click restore upgrade error, it says there's nothing wrong with it. HELP!!
[G3 General] bloodylipp:
It's not unrooting for me. After using restore upgrade errors I get "latest version is already installed". Any ideas?

*edit*

it is a at&t version

think i answered my own question.

http://xdaforums.com/att-lg-g3/general/unroot-return-to-factory-stock-att-lg-g3-t2820827
[G3 General] keithleyson:
I used this guide: http://xdaforums.com/showthread.php?t=2785089

I downloaded my firmware (D855) using this link: http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=<YOUR IMEI NUMBER HERE>
[G3 General] Lennyuk:
Been away this weekend and unable to check XDA - certain devices models seem to not work with upgrade repair, which is weird as the error your getting is just checking for software version rather than errors so if you did have an error you would be a little screwed (if you only had the option to use LG applications to fix).
[G3 General] @home:
Worked a treat - all back to stock:good:

Thanks
[G3 General] Steph09:
I can't get the pc suite to work :( I've tried on 2 pcs and get the same issue. I see that there's an update for the pc suite available and when I try to download it, it tells me "could not verify the update with the update server". I believe that I need the latest version because right now it doesn't recognize my phone although my pc does :(

Edit: I fixed it, it was Bitdefender that was causing a problem.

PC suite said I had to upgrade from D85510g to V10g, I didn't quite get the difference but still decided to do the update. I checked now my software information and it is exactly the same as it was before but now, I am rootless. And PC suite still tells me to do the same upgrade as before when checking for updates. Weird, right? No idea why it's making a differentiation between the two versions... The thing is that you may probably still lose root even when using pc suite.
[G3 General] Joao Oliveira:
Someone should point out that this method only works IF there's a firmware available for download to you phone serial number /IMEI. And unfortunately like mine, some don't.

If you go to :

http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=IMEI HERE

and get a similar response like this

<response req_cmd="auth_model_check" status="OK">

<auth_model_check>

<result>2</result>

<model>LGD855</model>

<suffix>A6MATN</suffix>

<esn_date/>

<sw_version/>

<sw_url/> <----------------------------SEE!! NOTHING!!!

<sw_locale_url/>

<sw_recommand_uri/>

<app_version/>

<app_url/>

<cs_em_flag>N</cs_em_flag>

<cs_em_uri>N</cs_em_uri>

<chip_type/>

<prod_type/>

</auth_model_check>

</response>

Lg Pc suite wont restore anything and it will say that you already have the latest version no matter what!!
[G3 General] galaxy_rider:
Help please...!!!!

Thanks a lot Lenny, But when i hit the "Restore upgrade errors" it shows me a message saying "NO UPGRADE ITEMS TO FIX"......:(

What should i do....?!?!?.....Please Help...

I am using LG G3 855 India
[G3 General] WendyB87:
So if I have an update and I'm rooted using towelroot and I connect to the pc suite I can update without any problems? I have an AT&T phone. And also if i do upgrade I have to root again? Does that mean I have to fix all my settings and stuff again? Do I lose anything?