Database Info

Root/downgrade options for H81020n

I had to make an insurance claim on my AT&T G3 recently and they sent me a G4 Android 6.0 / h81020n, build MRA58k. From what I understand, there's no way to root it and many don't expect there will be for a while...is that right? If so, what are my best options to downgrade and then root it? It's my only phone, and though I'm extremely competent with this stuff, I need to be sure it's a surefire method of downgrading. Thanks

noamo48 said:
I had to make an insurance claim on my AT&T G3 recently and they sent me a G4 Android 6.0 / h81020n, build MRA58k. From what I understand, there's no way to root it and many don't expect there will be for a while...is that right? If so, what are my best options to downgrade and then root it? It's my only phone, and though I'm extremely competent with this stuff, I need to be sure it's a surefire method of downgrading. Thanks
Click to expand...
Click to collapse
As of now, I'm going to be bold with my statement about the G4: The AT&T cannot and will not ever have an unlocked bootloader. I would also assert the likelihood of root on Marshmallow is slim to none. I'd say "none", except there's always a remote chance that someone with the time/money/know-how will decide not to give up until they've figured it out.
When you say "downgrading", I presume you mean going back to a previous build? If so, it is not possible. It would require the level of access that only an unlocked bootloader could provide, from what I understand. I think there was mention of some sort of bypass option that works on other devices, but it doesn't work with this one.
Long story short: get comfortable with your current experience, because it isn't likely to ever change with this device. I too had to replace my device under warranty (for the 2nd time), and was bummed when the replacement arrived having Marshmallow on it.

noamo48 said:
I had to make an insurance claim on my AT&T G3 recently and they sent me a G4 Android 6.0 / h81020n, build MRA58k. From what I understand, there's no way to root it and many don't expect there will be for a while...is that right? If so, what are my best options to downgrade and then root it? It's my only phone, and though I'm extremely competent with this stuff, I need to be sure it's a surefire method of downgrading. Thanks
Click to expand...
Click to collapse
I have not been able to downgrade H81020n since I got a replacement phone due to the infamous bootloop issue. I'm starting to wonder if somehow AT&T with or without support of LGE figured out which phones were rooted and injected some network packets to stress the radios in this device causing failures.
What's really unfortunate is the replacement devices all come with Marshmallow 6.0 on the H81020n ROM. That locked-down image, with the locked bootloader have made this device much less fun.
I've tried several downgrade paths with no success; the low-effort Root method, TOT downgrades with the LG flash utility, and good old fashioned send_commands.exe for image restoration to stock.

You need to use LGUP
http://forum.xda-developers.com/showpost.php?p=66316842&postcount=113

smknutson said:
You need to use LGUP
http://forum.xda-developers.com/showpost.php?p=66316842&postcount=113
Click to expand...
Click to collapse
I have LGUP and the .tot file. LGUP just won't allow me to flash it for some reason ?....
Sent from my LG-H810 using XDA-Developers mobile app

BTMoneyGang said:
I have LGUP and the .tot file. LGUP just won't allow me to flash it for some reason ?....
Sent from my LG-H810 using XDA-Developers mobile app
Click to expand...
Click to collapse
Did you load the.tot, close the LGUP program then reopen it and attempt the flash?
Did you change the Port # in Device Manager?

Can the same downgrade be done on 21y for h810 I miss root

H90022b Software update,October 12, 2017

I just upgraded two ATT LG V10 to H90022b released on 10/12/2017.
I thought it's just security patch but somehow I feel both get snappier.
And power seems improved a little bit. But I am not sure... maybe it's because it reinstalled all apps during upgrading ?
anyone has any issue or any improvement after upgrading to H90022b ?

ajutama si pe mine te rog frumos cu ultimul firmware lg h900
---------- Post added at 01:32 PM ---------- Previous post was at 01:28 PM ----------
am probleme de securitate dupa update android 6 pe lg h900
am nevoe de firmware ATT LG V10 la H90022b si nu stiu de unde sa downlandez
poate daca fac update la lg h900 cu H90022b mi se va rezolva problema

Have 2-week-old Lg v10 H900, new, unlocked. It would not upgrade with LG Bridge or OTA, saying "device may be rooted". So went online and found Marshmallow KDZ file and uploaded to phone. It shows the Marshmallow is up but now I get errors like "com.android.settings has stopped", "LG VPN has stopped", and "lock screen settings has stopped". I cannot configure/initiate fingerprint scanner, and device reboots when I uninstall an app.
I have cleared all caches and reset to factory (recommended by LG tech help...waiting for additional solutions from them), all to no avail.
Any ideas??

I have the same problem I am facing the same error in setting app if you fix these
If you fix these error please help me out

can someone with this update share it please as some of are not getting the update ota.

wow, it's been a year.. not solution yet? i wish i had this read these threads before updating to MM ...

Me too..
Wish someone with H90022b is generous enough to extract the partitions of the device so we can flash it using Qfill. As long as I have the device, I promise to do my best to provide the other files such as the loader and xml files.
I dont really understand the purpose of these partitions, so we need all except modemst1 modemst2 fsg (where imei is stored), cache, and of course no userdata. The total size will be around 4GB but will be around 2GB compressed.
No harm but will help a lot for many of us.
If anybody wants to help but not sure what to do, feel free to contact me.
Thank you!

ardian1899 said:
Me too..
Wish someone with H90022b is generous enough to extract the partitions of the device so we can flash it using Qfill. As long as I have the device, I promise to do my best to provide the other files such as the loader and xml files.
I dont really understand the purpose of these partitions, so we need all except modemst1 modemst2 fsg (where imei is stored), cache, and of course no userdata. The total size will be around 4GB but will be around 2GB compressed.
No harm but will help a lot for many of us.
If anybody wants to help but not sure what to do, feel free to contact me.
Thank you!
Click to expand...
Click to collapse
Problem with extracting partitions once on 22b would probably require root (at least for methods that I know of, such as Wanam's 'Partitions Backup & Restore'. Besides, most users who rooted it on lollipop never upgraded the software, users who would have 22b installed can't achieve root, and developers who could really help with this have already moved on. I just bought the AT&T version of this phone to use with the $10 Unreal Mobile unlimited monthly plan and realized that there is no root after MM update. I could live without root but I am also stuck with outdated 21z.

Android# said:
Problem with extracting partitions once on 22b would probably require root (at least for methods that I know of, such as Wanam's 'Partitions Backup & Restore'. Besides, most users who rooted it on lollipop never upgraded the software, users who would have 22b installed can't achieve root, and developers who could really help with this have already moved on. I just bought the AT&T version of this phone to use with the $10 Unreal Mobile unlimited monthly plan and realized that there is no root after MM update. I could live without root but I am also stuck with outdated 21z.
Click to expand...
Click to collapse
Fortunately there's another way.
We have to get the phone to Qualcomm 9008 mode.
There are 2 safe way to do it, I said safe because I did both a thousand times (hyperbolic, lol) without any problem or effect to the phone if it just "reading/extracting".
The 1st way is to connect 2 points on the board while connecting the usb cable to the computer. Of course the board need to be taken out from the phone.
I understand if the 1st way may not comfortable enough for some, then the 2nd way is using a deep flash cable, which is an easy mod to a spare usb cable.
If I have a 21z or 22b device, I can create these files in less than an hour and potentially help many 90021w user.
Both may not an easy thing to do. So will be great if anyone willing to lend a hand.

ardian1899 said:
Fortunately there's another way.
We have to get the phone to Qualcomm 9008 mode.
There are 2 safe way to do it, I said safe because I did both a thousand times (hyperbolic, lol) without any problem or effect to the phone if it just "reading/extracting".
The 1st way is to connect 2 points on the board while connecting the usb cable to the computer. Of course the board need to be taken out from the phone.
I understand if the 1st way may not comfortable enough for some, then the 2nd way is using a deep flash cable, which is an easy mod to a spare usb cable.
If I have a 21z or 22b device, I can create these files in less than an hour and potentially help many 90021w user.
Both may not an easy thing to do. So will be great if anyone willing to lend a hand.
Click to expand...
Click to collapse
per your request I have taken screenshot of the service menu and uploading as attachment with this post.

Android# said:
per your request I have taken screenshot of the service menu and uploading as attachment with this post.
Click to expand...
Click to collapse
Hello,
Thank you for your efforts. Sorry I was a bit busy these days.
Initially I'm trying to get my luck by googling up what I see on your screenshots, but no luck.
Now I'm still trying to get a script to copy the phone's partitions. Seems like will taking a while.
I'll let you know if it's ready, hopefully won't be long.
Thank you again!

ardian1899 said:
Hello,
Thank you for your efforts. Sorry I was a bit busy these days.
Initially I'm trying to get my luck by googling up what I see on your screenshots, but no luck.
Now I'm still trying to get a script to copy the phone's partitions. Seems like will taking a while.
I'll let you know if it's ready, hopefully won't be long.
Thank you again!
Click to expand...
Click to collapse
You welcome. I also tried to download a kdz for my firmware by using LG Bridge's 'update error recovery' option but it gives me error that "Your phone information cannot be checked. For more information, contact LG customer service". But if i use just 'Software Update' it tells me that I can update to latest version "V21W_00" through update center settings in my phone. I think that LG Bridge database only have up to V21W as the latest OS for LG H900 and it doesn't recognize that my phone has more updated version, so even if someone had Nougat they got OTA, they wouldn't be able to use LG Bridge or PC Suite to help us this way.
I am just tired of this phone and gonna sell it and buy a T-Mobile version. Good luck to you, hope you find a way to upgrade software on your phone.

Android# said:
You welcome. I also tried to download a kdz for my firmware by using LG Bridge's 'update error recovery' option but it gives me error that "Your phone information cannot be checked. For more information, contact LG customer service". But if i use just 'Software Update' it tells me that I can update to latest version "V21W_00" through update center settings in my phone. I think that LG Bridge database only have up to V21W as the latest OS for LG H900 and it doesn't recognize that my phone has more updated version, so even if someone had Nougat they got OTA, they wouldn't be able to use LG Bridge or PC Suite to help us this way.
I am just tired of this phone and gonna sell it and buy a T-Mobile version. Good luck to you, hope you find a way to upgrade software on your phone.
Click to expand...
Click to collapse
I read somewhere that after 21w, at&t keep the firmware on their server, maybe that's why the only way to update is through OTA.
When will you sell the phone approximately? I may finish the script before it..

Maybe it will change something if we get the H90022b .. i'm little skeptical though. Because our issues with H900 MM started because we Flashed a H900 ROM over a H901 or VS990 board. the way i see it, even if AT&T releases Nougat, we still gonna have issues, even worse.. we kinda screwed..
i've been thinking, maybe the H90021w was somehow corrupted or missing some files...
Also, i've been reading some threads, people talking about reflashing the correct ROM, either a H901 or VS990 ... but i'm not ready to dry that considering none has done that succesfully..
For me, the solution would be find a solution to go back to Lolipop... at least it no issues. outdated maybe, but everuthing was working fine on my phone.
https://cdn-cf-3.xda-developers.com/images/smilies/cool.gif

Going back to Lollipop is not possible because of antirollback. And I dont think if there's anybody ever found code board H900 on the pcb. Eventhough it seems not right but vs990 is the correct pcb board, it just the bad firmware (v21w). And there's no KDZ or TOT newer than v21w around as far as I know.
I think I found the solution, but I need a volunteer with v21z or v22b firmware on his phone

Android# said:
You welcome. I also tried to download a kdz for my firmware by using LG Bridge's 'update error recovery' option but it gives me error that "Your phone information cannot be checked. For more information, contact LG customer service". ....
Click to expand...
Click to collapse
Here is the test point. Is it visible?

can anyone please post H90022b kdz file or something newer?

My progress: LG V20 H918/7.0+ FRP bypass in 2018?

After putting my FRP-stuck T-Mobile V20 away for a couple months, I was unfortunately surprised to learn that very little public progress has been made on the subject since my last give-up. I dedicated the last day to trying to figure out FRP bypass for my LG V20, and upon re-researching, I have...
1. Managed to downgrade my V20 to H91810j, though this version still has all exploits patched to get through FRP (to my knowledge).
2. Upon further research, I concluded that what I need is to successfully downgrade to H91810d, as it's the only pre-December 2016 update available (pre-December updates have un-patched exploits to be able to get into the phone). Unfortunately, this update was the one released on the phones stock from the factory, which made it next to impossible to find a KDZ file as they were't "pushed" to the general public.
3. Through researching countless other threads, I've come across this link (I can't share as I still haven't posted 10 times, can DM if needed for reference) which appears to be the closest possible file to the needed H91810d, except the download is a .ZIP that contains Boot.img and Modem.img, which I'm not familiar with using, and no .KDZ file.
4. Further research concluded that I could TWRP-push these files to a TWRP unlocked device, but because of the locked FRP, such a thing isn't possible. My last and final method (which I will try tomorrow as it's 8 AM and i've been trying to get this damned phone unlocked for hours and need sleep) will be one recommended on another forum, which is to downgrade, reset the phone, upgrade, reset the phone, and continue on until FRP is no longer on the device.
Researching into other devices proves that it's definitely possible, though the V20 (especially the H918 model at that) seems to have far less information available towards achieving this. After giving a selection of paid services a look as well, the majority didn't have the ability to unlock the V20 either, which makes me question what the V20 is doing differently from other devices. If anybody has any information that could help me or the community in the matter, please let me know!

caldermody said:
After putting my FRP-stuck T-Mobile V20 away for a couple months, I was unfortunately surprised to learn that very little public progress has been made on the subject since my last give-up. I dedicated the last day to trying to figure out FRP bypass for my LG V20, and upon re-researching, I have...
1. Managed to downgrade my V20 to H91810j, though this version still has all exploits patched to get through FRP (to my knowledge).
2. Upon further research, I concluded that what I need is to successfully downgrade to H91810d, as it's the only pre-December 2016 update available (pre-December updates have un-patched exploits to be able to get into the phone). Unfortunately, this update was the one released on the phones stock from the factory, which made it next to impossible to find a KDZ file as they were't "pushed" to the general public.
3. Through researching countless other threads, I've come across this link (I can't share as I still haven't posted 10 times, can DM if needed for reference) which appears to be the closest possible file to the needed H91810d, except the download is a .ZIP that contains Boot.img and Modem.img, which I'm not familiar with using, and no .KDZ file.
4. Further research concluded that I could TWRP-push these files to a TWRP unlocked device, but because of the locked FRP, such a thing isn't possible. My last and final method (which I will try tomorrow as it's 8 AM and i've been trying to get this damned phone unlocked for hours and need sleep) will be one recommended on another forum, which is to downgrade, reset the phone, upgrade, reset the phone, and continue on until FRP is no longer on the device.
Researching into other devices proves that it's definitely possible, though the V20 (especially the H918 model at that) seems to have far less information available towards achieving this. After giving a selection of paid services a look as well, the majority didn't have the ability to unlock the V20 either, which makes me question what the V20 is doing differently from other devices. If anybody has any information that could help me or the community in the matter, please let me know!
Click to expand...
Click to collapse
Are you rooted, with TWRP installed?

pawar21 said:
Are you rooted, with TWRP installed?
Click to expand...
Click to collapse
I am not, I would attempt to root but without being able to enable USB debugging, I'm sort of at a stalemate.

Have you looked at this........https://youtu.be/NWTmVIXkFDI

caldermody said:
After putting my FRP-stuck T-Mobile V20 away for a couple months, I was unfortunately surprised to learn that very little public progress has been made on the subject since my last give-up. I dedicated the last day to trying to figure out FRP bypass for my LG V20, and upon re-researching, I have...
1. Managed to downgrade my V20 to H91810j, though this version still has all exploits patched to get through FRP (to my knowledge).
2. Upon further research, I concluded that what I need is to successfully downgrade to H91810d, as it's the only pre-December 2016 update available (pre-December updates have un-patched exploits to be able to get into the phone). Unfortunately, this update was the one released on the phones stock from the factory, which made it next to impossible to find a KDZ file as they were't "pushed" to the general public.
3. Through researching countless other threads, I've come across this link (I can't share as I still haven't posted 10 times, can DM if needed for reference) which appears to be the closest possible file to the needed H91810d, except the download is a .ZIP that contains Boot.img and Modem.img, which I'm not familiar with using, and no .KDZ file.
4. Further research concluded that I could TWRP-push these files to a TWRP unlocked device, but because of the locked FRP, such a thing isn't possible. My last and final method (which I will try tomorrow as it's 8 AM and i've been trying to get this damned phone unlocked for hours and need sleep) will be one recommended on another forum, which is to downgrade, reset the phone, upgrade, reset the phone, and continue on until FRP is no longer on the device.
Researching into other devices proves that it's definitely possible, though the V20 (especially the H918 model at that) seems to have far less information available towards achieving this. After giving a selection of paid services a look as well, the majority didn't have the ability to unlock the V20 either, which makes me question what the V20 is doing differently from other devices. If anybody has any information that could help me or the community in the matter, please let me know!
Click to expand...
Click to collapse
This is the guide i used & im on h91810p & i had mine bypassed & ready to setup in just under an hour.....
https://www.hardreset.info/devices/...ication/frp-lg-google-account-2018-x-power-2/
Sent from my LG-H918 using XDA Labs

pump0666 said:
This is the guide i used & im on h91810p & i had mine bypassed & ready to setup in just under an hour.....
https://www.hardreset.info/devices/...ication/frp-lg-google-account-2018-x-power-2/
Sent from my LG-H918 using XDA Labs
Click to expand...
Click to collapse
Well for those trying, I have a phone on H91810q, and the above process (hardreset link) does not work. when getting to the step to allow unsigned binaries it will not toggle. I tried a few other approaches that might get USB enabled (e.g. via LDB in SVC mode, but it also failed to toggle).
Does any know if you can downgrade an FRP locked phone without USB enabled? e.g. using the process described in the thread http://forum.xda-developers.com/v20/how-to/step-step-guide-lg-v20-h918-unlocking-t3808258
Asking before I have to go find a windows box and spend an hour or so trying, in vain, if it is not possible.

drinnovation said:
Well for those trying, I have a phone on H91810q, and the above process (hardreset link) does not work. when getting to the step to allow unsigned binaries it will not toggle. I tried a few other approaches that might get USB enabled (e.g. via LDB in SVC mode, but it also failed to toggle).
Does any know if you can downgrade an FRP locked phone without USB enabled? e.g. using the process described in the thread http://forum.xda-developers.com/v20/how-to/step-step-guide-lg-v20-h918-unlocking-t3808258
Asking before I have to go find a windows box and spend an hour or so trying, in vain, if it is not possible.
Click to expand...
Click to collapse
Have you tried downgrading to h91810p first? H91810q might be patched as not to allow this method. Both h91810p & q are ARB1 so you CAN roll back before proceeding
Sent from my LG-H918 using XDA Labs
I should also add that I used the method with Bluetooth earpiece. & comp method-

Android 9 Pie .kdz

Well I've obtained the actual .kdz file from the pre beta program in Korea. Now too flash it into my Canadian g710awm. The firmware is actually for model# g710N so wish me luck...

ryn.ste said:
Well I've obtained the actual .kdz file from the pre beta program in Korea. Now too flash it into my Canadian g710awm. The firmware is actually for model# g710N so wish me luck...
Click to expand...
Click to collapse
Can u share the link I wanna try it also

ryn.ste said:
Well I've obtained the actual .kdz file from the pre beta program in Korea. Now too flash it into my Canadian g710awm. The firmware is actually for model# g710N so wish me luck...
Click to expand...
Click to collapse
Is it a 8.0 kdz to update to 9.0 or directly a 9.0 kdz?

Did it work?

MishaalRahman said:
Did it work?
Click to expand...
Click to collapse
Lack of response, I'm gonna guess no? LoL

dah brick dah bricks.

???

The suspense is killing me. Personally I'm waiting for the official, but it would be nice to know...

i guess i would be able to flash it on my g7 , but i only have a .up file instead of a kdz and that doesnt work

Warning!
From what I read recently; LG has started to use unique RSA keys for each device (within a group, i.e G7) starting with V35 (I think), thus flashing a KDZ from another G7 would definitively cause hardbrick.
Edit: Apparently this was (mostly?) wrong. At least some confirmed models can be cross-flashed.

askermk2000 said:
Warning!
From what I read recently; LG has started to use unique RSA keys for each device (within a group, i.e G7) starting with V35 (I think), thus flashing a KDZ from another G7 would definitively cause hardbrick.
Click to expand...
Click to collapse
I thought that was only for TMoile but not the rest of variants?

GROOVYJOSHCLARK said:
I thought that was only for TMoile but not the rest of variants?
Click to expand...
Click to collapse
Well, like I said, not anymore.
IIRC, this is what @runningnak3d said in a tread somewhere (I don't recall exactly, maybe V30 forums).
He is the current resident expert on LG root, and bootloader matters. At least the most active one, and he's provided root for many previous LG devices.

askermk2000 said:
Well, like I said, not anymore.
IIRC, this is what @runningnak3d said in a tread somewhere (I don't recall exactly, maybe V30 forums).
He is the current resident expert on LG root, and bootloader matters. At least the most active one, and he's provided root for many previous LG devices.
Click to expand...
Click to collapse
I am definitely not arguing as I dont know the answer 100% myself.
What I DO know for sure is that I can, (and I have) flashed other LG G7's firmware on my G7 (Sprint) through my Octoplus box. This is using the Octoplus box, not LGUP, but if the RSA keys were an issue, I would expect it to not work (flashing another variant .KDZ), or I would expect the device not to work (boot) afterwards. It boots and works just fine. I also know of numerous others who have converted their LG G7's (except TMobile) to the unlocked model (ULM). My understanding was that only the TMobile ones were using a custom RSA key coming FROM TMobile themselves (I could be wrong but this is what I read) and since I dont own a TMobile flavor, I cant test myself to confirm.

In that case maybe I remember wrong, or runningnak3d statement was not accurate (maybe doesn't apply to G7 specifically).

askermk2000 said:
In that case maybe I remember wrong, or runningnak3d statement was not accurate (maybe doesn't apply to G7 specifically).
Click to expand...
Click to collapse
All good, I dont know for sure myself so I cant confirm nor deny anything except for my personal Octoplus flashing. I just want ROOT, thats what I am pressing through to figure out how to achieve. I HATE that LG locks the bootloaders, if I had known prior, I would NEVER have switched from HTC!
LG mobile will go out of business soon enough if they dont cut the crap.

Yeah, not to mention that we don't have a way to fix ourselves bricked devices. It would be a trivial matter with a simple qualcomm type firehose-file.
Instead now it's basically dead weight. They seem to think it's ok to produce lots of electronic garbage, and not make efforts to reduce this.

askermk2000 said:
Yeah, not to mention that we don't have a way to fix ourselves bricked devices. It would be a trivial matter with a simple qualcomm type firehose-file.
Instead now it's basically dead weight. They seem to think it's ok to produce lots of electronic garbage, and not make efforts to reduce this.
Click to expand...
Click to collapse
Exactly, hopefully the drop in sales will be enough to kick their butt's in gear BEFORE they become the next Blackberry! If they would simply give us a restore KDZ, we would love LG, instead, they lock us out, and make it damn near impossible to restore or recover our devices from normal things, such as a bad OTA updates. BUT NO, for some dumb A$$ reasons, they dont so it WILL be their demise. Its almost like being able to see the future. If they took notice of all the predecessors before them, all their mistakes, made changes then history wouldn't have to repeat itself. If not, LG will be another forgotten company no one gives a crap about.

GROOVYJOSHCLARK said:
I am definitely not arguing as I dont know the answer 100% myself.
What I DO know for sure is that I can, (and I have) flashed other LG G7's firmware on my G7 (Sprint) through my Octoplus box. This is using the Octoplus box, not LGUP, but if the RSA keys were an issue, I would expect it to not work (flashing another variant .KDZ), or I would expect the device not to work (boot) afterwards. It boots and works just fine. I also know of numerous others who have converted their LG G7's (except TMobile) to the unlocked model (ULM). My understanding was that only the TMobile ones were using a custom RSA key coming FROM TMobile themselves (I could be wrong but this is what I read) and since I dont own a TMobile flavor, I cant test myself to confirm.
Click to expand...
Click to collapse
What partitions did you flash?
All of the KDZs I have been able to pull down have different RSA certs (granted it is only a couple) but it is not just the TMO that was different.
If you don't mind, link to the exact KDZ for your model, and the KDZ that you flashed -- I would love to compare the certs.
-- Brian

runningnak3d said:
What partitions did you flash?
All of the KDZs I have been able to pull down have different RSA certs (granted it is only a couple) but it is not just the TMO that was different.
If you don't mind, link to the exact KDZ for your model, and the KDZ that you flashed -- I would love to compare the certs.
-- Brian
Click to expand...
Click to collapse
There is no KDZ for the PM (Sprint model) yet so I cannot go back to Sprint or link to one (until one is released) but I wish there was one for others who are in a loop or brick situation, here are the 2 I used:
EM (European Model - bootload unlockable approved by LG):
G710EM10b_00_0521.kdz
https://drive.google.com/file/d/1W14Y-jbvnwDt4UOfitni8hDGfwYsXesV/view?usp=sharing
ULM (US Unlocked Model):
G710ULM10g_00_NAO_US_OP_0913.kdz
http://pkg02.lime.gdms.lge.com/dn/d...XADM55F9FR80/G710ULM10g_00_NAO_US_OP_0913.kdz
I flash ALL partitions through Octoplus EXCEPT the modems (MODEM1/2), I left those from Sprint (stock), not sure if it helps or not, but I have service so I like to think it did. There are lots of users who have also used the LGUP (somehow) to cross flash the KDZ's to the ULM (unlocked) model but I haven't personally used this LGUP method so I cant comment if its valid or not. Octoplus, most definitely works though (and I have the logs to show the partitions if one was interested).

GROOVYJOSHCLARK said:
There is no KDZ for the PM (Sprint model) yet so I cannot go back to Sprint or link to one (until one is released) but I wish there was one for others who are in a loop or brick situation, here are the 2 I used:
<snip>
Click to expand...
Click to collapse
There will never be a Sprint KDZ -- neither Sprint or AT&T release KDZs (I don't think they even use them internally).
I am downloading them now, and I will pull the certs / post the results as soon as they are done.
Thanks!
-- Brian

2 Noob questions

1. I could put an "international" / "Debranded" software on my old Sony phones. Does the V20 have that? Or is it only carrier specific software? I would like to get rid of the T-Mobile crap on my H918.
2. I'm assuming if I root and/or unlock the bl in this phone, I have to say goodbye to Oreo and downgrade?
ALSO, if so, would you recommend I do that anyways? I feel 8.0 brought a lot of cool features to the V20.
I've spent a lot of time tying to figure out the answer to #1. Poking around. But not sure if "OEM" means T-Mobile's software on the V20 or LG's generic software. (If that even exists)
I guess my goal is to just get rid of T-Mobile's crap on this phone. I switch to Google Fi.. Wich may have been a mistake, too .. who knows. It's just a cheaper t-mobile on this phone.
Much thanks for the help. This site has helped me de-brand old pre-Android SonyEricsson phones and unlock a bunch of helpful stuff. In great debt to you folks.

jection said:
1. I could put an "international" / "Debranded" software on my old Sony phones. Does the V20 have that? Or is it only carrier specific software? I would like to get rid of the T-Mobile crap on my H918.
2. I'm assuming if I root and/or unlock the bl in this phone, I have to say goodbye to Oreo and downgrade?
ALSO, if so, would you recommend I do that anyways? I feel 8.0 brought a lot of cool features to the V20.
I've spent a lot of time tying to figure out the answer to #1. Poking around. But not sure if "OEM" means T-Mobile's software on the V20 or LG's generic software. (If that even exists)
I guess my goal is to just get rid of T-Mobile's crap on this phone. I switch to Google Fi.. Wich may have been a mistake, too .. who knows. It's just a cheaper t-mobile on this phone.
Much thanks for the help. This site has helped me de-brand old pre-Android SonyEricsson phones and unlock a bunch of helpful stuff. In great debt to you folks.
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Click to collapse
You can't flash another variants firmware on an H918 result is instant brick. You can downgrade to 10p and root via the laf exploit and then upgade to oreo with the rooted Oreo zip in the forum and keep root, there are a couple custom stock based rom which has some stuff debloated, if you choose to debloat further be advised that if you remove the wrong thing it breaks stuff in the rom
Sent from my LG-H910 using XDA Labs

cnjax said:
You can't flash another variants firmware on an H918 result is instant brick. You can downgrade to 10p and root via the laf exploit and then upgade to oreo with the rooted Oreo zip in the forum and keep root, there are a couple custom stock based rom which has some stuff debloated, if you choose to debloat further be advised that if you remove the wrong thing it breaks stuff in the rom
Sent from my LG-H910 using XDA Labs
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Click to collapse
Thanks! That's exactly what I was wondering.
That clears things up. Thanks.

For H918 there's also the issue of ARB-anti roll back I think. Better search and read up on that.