LS997 Oddities - LG V20 Questions & Answers

Hello Everyone,
I have two different LS997 that I purchased from ebay (but from two different sellers). The first one I purchased simply won't activate on a Sprint MVNO (despite the IMEI and SIM being clean). The second one activated without any issues whatsoever.
I didn't notice until this weekend, but the one that activates cleanly has the Sprint logo as a bootsplash. The one that does not activate has the LG logo as a bootsplash.
I'm really not sure what to make of the one without the Sprint logo. It won't activate, but it will update (I originally updated it from a pre-ZV8 release, before I knew about that restriction).
Is there an LS997 variant that is non-Sprint? Is there something else I should be looking at, or other reasons I'm unable to activate this phone? Even the Sprint FE check comes back clean, so I really don't know what the difference is.
Thanks in advance.

sykosoft said:
Hello Everyone,
I have two different LS997 that I purchased from ebay (but from two different sellers). The first one I purchased simply won't activate on a Sprint MVNO (despite the IMEI and SIM being clean). The second one activated without any issues whatsoever.
I didn't notice until this weekend, but the one that activates cleanly has the Sprint logo as a bootsplash. The one that does not activate has the LG logo as a bootsplash.
I'm really not sure what to make of the one without the Sprint logo. It won't activate, but it will update (I originally updated it from a pre-ZV8 release, before I knew about that restriction).
Is there an LS997 variant that is non-Sprint? Is there something else I should be looking at, or other reasons I'm unable to activate this phone? Even the Sprint FE check comes back clean, so I really don't know what the difference is.
Thanks in advance.
Click to expand...
Click to collapse
The LS997 is strictly sprint it is possible that the phone had the bootloader unlocked and rooted with dirty santa before arb was incremented so they may have flashed a 996 rom on the phone.
Sent from my LG-H910 using XDA Labs

cnjax said:
The LS997 is strictly sprint it is possible that the phone had the bootloader unlocked and rooted with dirty santa before arb was incremented so they may have flashed a 996 rom on the phone.
Sent from my LG-H910 using XDA Labs
Click to expand...
Click to collapse
Is there an easy way to validate that? And/or, return it to stock?

sykosoft said:
Is there an easy way to validate that? And/or, return it to stock?
Click to expand...
Click to collapse
Go to settings /about phone, then look under software and see what it says.
Sent from my LG-H910 using XDA Labs

cnjax said:
Go to settings /about phone, then look under software and see what it says.
Sent from my LG-H910 using XDA Labs
Click to expand...
Click to collapse
It shows as an LS997, and the software version looks as expected. However, the behavior of the phone doesn't match the other V20 (which activates fine). If I have an unlocked bootloader on this one, is that any use at this point? Given that I can't use fastboot mode, and I understand that booting to LG software wipes the recovery (according to the threads I read), how do I use the unlocked bootloader?

sykosoft said:
It shows as an LS997, and the software version looks as expected. However, the behavior of the phone doesn't match the other V20 (which activates fine). If I have an unlocked bootloader on this one, is that any use at this point? Given that I can't use fastboot mode, and I understand that booting to LG software wipes the recovery (according to the threads I read), how do I use the unlocked bootloader?
Click to expand...
Click to collapse
If the bootloader is truly unlocked, you should be able to flash twrp and then root the phone, why can't you use fastboot?
Sent from my LG-H910 using XDA Labs

Related

Sprint LG v20 has no fastboot

Welp, looks like it's about to be tmo for me!
freeza said:
Welp, looks like it's about to be tmo for me!
Click to expand...
Click to collapse
Be good to have ya here homeslice, you need a tester for anything hit me up!
Sent from my LG-H918 using XDA-Developers mobile app
He will be joining us in 2019
Sent from my LG-H918 using Tapatalk
I am unable to boot into bootloader on ATT model :/
Lol as expected from Sprint and AT&T. Dont get me wrong, i wish they had bootloader unlocked because the more bootloaders unlocked for different carriers, the more chances to duplicate the amount of developments/roma/mosa/kernels etc.... Now, having only Tmobile as the only one with unlocked bootloader, well, devs who use carrier such as AT&T and Sprint might get further away from developments on LG V20. (I'm a LG V20 Tmobile variant owner)
im not to familiar with LG, but the correct way is to power off the device, hold volume down, insert USB cable?
one would think even if locked, it could still enter the bootloader. adb works, and when i reboot recovery, i get to recovery, but when selecting reboot bootloader, the device starts. interestingly enough, it will enter in adb sideload mode
With Google obviously not wanting unlocked handsets or rooted handsets to be common... This kind of thing is going to be the norm. Best to adapt, in the long term. The days of modding are being ended by Google
Skripka said:
With Google obviously not wanting unlocked handsets or rooted handsets to be common... This kind of thing is going to be the norm. Best to adapt, in the long term. The days of modding are being ended by Google
Click to expand...
Click to collapse
I would agree if not for the fact that the pixel phones can be unlocked
freeza said:
I would agree if not for the fact that the pixel phones can be unlocked
Click to expand...
Click to collapse
For the time being. As SafetyNet gets more common, Google will quit making them unlockable.
Granted i preordered my v20 expecting to run it unrooted stock.
Skripka said:
For the time being. As SafetyNet gets more common, Google will quit making them unlockable.
Granted i preordered my v20 expecting to run it unrooted stock.
Click to expand...
Click to collapse
Well, it's really only sprint, at&t, and more than likely Verizon. Fastboot mode doesn't even exist on the phone through the production software. T-Mobile is completely unlockable...
freeza said:
Well, it's really only sprint, at&t, and more than likely Verizon. Fastboot mode doesn't even exist on the phone through the production software. T-Mobile is completely unlockable...
Click to expand...
Click to collapse
So this means no recovery for sprint variants, but is there still a possibility of systemless root using the LG up or bridge programs?
rickberg said:
So this means no recovery for sprint variants, but is there still a possibility of systemless root using the LG up or bridge programs?
Click to expand...
Click to collapse
I would also like to know this
+1
sjr19 said:
I would also like to know this
Click to expand...
Click to collapse
According to twitter there is a root being worked on by chainfire unsure of whether or not it will be for all variants or just unlocked bootloaders
rickberg said:
According to twitter there is a root being worked on by chainfire unsure of whether or not it will be for all variants or just unlocked bootloaders
Click to expand...
Click to collapse
T-Mobile is rooted because of bootloader unlock v.v not the other variants.
shadowxaero said:
T-Mobile is rooted because of bootloader unlock v.v not the other variants.
Click to expand...
Click to collapse
So the root chainfire has established will be tmobile only?
rickberg said:
According to twitter there is a root being worked on by chainfire unsure of whether or not it will be for all variants or just unlocked bootloaders
Click to expand...
Click to collapse
rickberg said:
So the root chainfire has established will be tmobile only?
Click to expand...
Click to collapse
He said it was based on jcadduono's work and if jcadduono has a thread on here about getting root shell to push recovery on the TMobile variant after unlocking the bootloader.
time to return it!
Just a thought. A method over use getting around big red in the past . I purchased unlock able version of the the phone I wanted the note 5 . Umocked it rooted it . Then got my carriers Sim card and called to get it activated. It can be a pain but it can be done
shadowxaero said:
T-Mobile is rooted because of bootloader unlock v.v not the other variants.
Click to expand...
Click to collapse
I thought since we had the "enable OEM unlock" option like T-Mobile we would be good to go.. smh

Unlocked Factory Image for Carrier locked STV100-1

Hello all,
Attached are modified factory roms that will flash an at&t or t-mobile phone to an unlocked phone. This means no more bloatware and in my case much better handoff between the lte bands.
These images reuse the carrier bootloader (I'm working on it) but everything else from the radio to the rom is from the unlocked priv.
Version: AAJ919
AT&T -> unlocked hybrid: https://www.androidfilehost.com/?fid=673368273298947044
T-Mobile -> unlocked hybrid: https://www.androidfilehost.com/?fid=457095661767153589
Directions: Unzip files. Hold power and volume down until phone reboots to fastboot. Launch flashall.bat. Follow instructions. This WILL delete your data so have a backup or don't I'm your boss. Wait. Done.
As usual I am not responsible for you bricking your phone. That being said even if the wrong file is flashed the phone gets stuck at the fastboot screen where you can flash the right file.
-Happy Modding
Can you provide more detailed instructions please
Im serious thats all there is to it.
What parts are you having problems with?
Didn't work for me, unfortunately. Phone promptly asked for SIM Pin.
zerocover said:
Hello all,
Attached are modified factory roms that will flash an at&t or t-mobile phone to an unlocked phone. This means no more bloatware and in my case much better handoff between the lte bands.
These images reuse the carrier bootloader (I'm working on it) but everything else from the radio to the rom is from the unlocked priv.
Version: AAJ919
AT&T -> unlocked hybrid: https://www.androidfilehost.com/?fid=673368273298947044
T-Mobile -> unlocked hybrid: https://www.androidfilehost.com/?fid=457095661767153589
Directions: Unzip files. Hold power and volume down until phone reboots to fastboot. Launch flashall.bat. Follow instructions. This WILL delete your data so have a backup or don't I'm your boss. Wait. Done.
As usual I am not responsible for you bricking your phone. That being said even if the wrong file is flashed the phone gets stuck at the fastboot screen where you can flash the right file.
-Happy Modding
Click to expand...
Click to collapse
Just out of curiosity, will this be possible to do on a Verizon model? Obviously not flashing the ones above but making a VZ version?
Sent from my Nexus 6 using XDA-Developers Legacy app
illitero said:
Didn't work for me, unfortunately. Phone promptly asked for SIM Pin.
Click to expand...
Click to collapse
This does not unlock your phone, this is an unlocked rom with no carrier bloatware.
You must already have an unlocked phone. If your phone is paid off call your carrier and ask for the pin.
ozzmanj1 said:
Just out of curiosity, will this be possible to do on a Verizon model? Obviously not flashing the ones above but making a VZ version?
Sent from my Nexus 6 using XDA-Developers Legacy app
Click to expand...
Click to collapse
That one wont. This one might.
Disclaimer I dont have a vzw phone so can't test it, but pretty much I'm making the same modification I made to the others. It should work.
If you could give it a go and let me know.
If it doesn't work this file will get you back to where you should be
zerocover said:
That one wont. This one might.
Disclaimer I dont have a vzw phone so can't test it, but pretty much I'm making the same modification I made to the others. It should work.
If you could give it a go and let me know.
If it doesn't work this file will get you back to where you should be
Click to expand...
Click to collapse
I haven't bought a priv yet. But i came across a killer deal for a VZ model that's I'd be using on tmo. I'm going to be snagging it. But will test for sure and let you know. I am just trying to read up on the phone before ordering it on how to get rid of bloat and whatnot without root. Thank you very much for making the file.
Sent from my Nexus 6 using XDA-Developers Legacy app
zerocover said:
This does not unlock your phone, this is an unlocked rom with no carrier bloatware.
You must already have an unlocked phone. If your phone is paid off call your carrier and ask for the pin.
Click to expand...
Click to collapse
Haha, duh. I'm sorry. Very distracted, late night for me when I found this thread. plz4giv
zerocover said:
That one wont. This one might.
Disclaimer I dont have a vzw phone so can't test it, but pretty much I'm making the same modification I made to the others. It should work.
If you could give it a go and let me know.
If it doesn't work this file will get you back to where you should be
Click to expand...
Click to collapse
I tried it and it worked. However, once it boots it will install a software update which takes you back to the bloated VZW version. Perhaps there's a way to block that update?
dakota_96 said:
I tried it and it worked. However, once it boots it will install a software update which takes you back to the bloated VZW version. Perhaps there's a way to block that update?
Click to expand...
Click to collapse
Totally possible. If we had root just modify the host file and set the verizon server update ip to localhost. You should be able to install DNS66 and do something similar. This will take digging on your end to figure out what the update IP is though.
I have an ATT Priv, so if I flash this I'll get next time OTA from BlackBerry instead of ATT? Saw the one above with the Verizon update and went back to bloated version.
Reporting back in to verify that it worked flawlessly on both at&t and t-mobile variants I have. Now if only we could get root lol
Thank you so much for your effort
I have an ATT branded Priv which got unlocked from ATT directly and has successfully installed this ROM. It works perfectly without any ATT bloatwares, but this built is old and when I check for system update it shows my system is up to date. However the most recent built for unlocked factory image is AAL202 according to the blackberry official reload software website.
So does this ROM OTA updates via ATT server or directly from Blackberry server?
zerocover said:
Im serious thats all there is to it.
What parts are you having problems with?
Click to expand...
Click to collapse
dude what about the firmware version? and update status?
is there one available for the AAL230 update? and is the at&t version provided here applicable on my priv with AAL230 update installed?
zerocover said:
Hello all,
Attached are modified factory roms that will flash an at&t or t-mobile phone to an unlocked phone. This means no more bloatware and in my case much better handoff between the lte bands.
These images reuse the carrier bootloader (I'm working on it) but everything else from the radio to the rom is from the unlocked priv.
Version: AAJ919
AT&T -> unlocked hybrid: https://www.androidfilehost.com/?fid=673368273298947044
T-Mobile -> unlocked hybrid: https://www.androidfilehost.com/?fid=457095661767153589
Directions: Unzip files. Hold power and volume down until phone reboots to fastboot. Launch flashall.bat. Follow instructions. This WILL delete your data so have a backup or don't I'm your boss. Wait. Done.
As usual I am not responsible for you bricking your phone. That being said even if the wrong file is flashed the phone gets stuck at the fastboot screen where you can flash the right file.
-Happy Modding
Click to expand...
Click to collapse
Is this possible for the Verizon moto z play???
calistoz said:
is there one available for the AAL230 update? and is the at&t version provided here applicable on my priv with AAL230 update installed?
Click to expand...
Click to collapse
AT&T runs a newer version of android then the international. If you want stockish android with no carrier bloat go international.
jzamalot said:
Is this possible for the Verizon moto z play???
Click to expand...
Click to collapse
Send me a moto z play and we shall see. Otherwise sorry I can't test it.
With the very recent Verizon Priv update can the de-bloated image be updated?

H918 10P root?

Is there any root yet for H918 10p if so... Please direct me to it asap lol. If not I might have to warranty exchange and then root or wait.. Thanks guys!
10p currently can not be rooted. There are some thoughts and ideas floating around, but more than likely another Linux kernel exploit will need to be found. Also, just an FYI, T-Mobile incremented the ARB version for 10p, so don't try to force an older version to flash -- that will blow the qfuse, and that is a hardware issue that can't be fixed without replacing the CPU.
-- Brian
runningnak3d said:
10p currently can not be rooted. There are some thoughts and ideas floating around, but more than likely another Linux kernel exploit will need to be found. Also, just an FYI, T-Mobile incremented the ARB version for 10p, so don't try to force an older version to flash -- that will blow the qfuse, and that is a hardware issue that can't be fixed without replacing the CPU.
-- Brian
Click to expand...
Click to collapse
Yea lg played us dirty
pbedard said:
Yea lg played us dirty
Click to expand...
Click to collapse
I wonder if the V30 will be locked down like this?? I really DONT like the current/ future status of US based TMobile devices and the lack of root options.
runningnak3d said:
10p currently can not be rooted. There are some thoughts and ideas floating around, but more than likely another Linux kernel exploit will need to be found. Also, just an FYI, T-Mobile incremented the ARB version for 10p, so don't try to force an older version to flash -- that will blow the qfuse, and that is a hardware issue that can't be fixed without replacing the CPU.
-- Brian
Click to expand...
Click to collapse
You think I should call T-Mobile for a warranty exchange or just wait it out for root I'm probably gonna get the v30 anyway I just miss rooting. Lol
pbedard said:
Yea lg played us dirty
Click to expand...
Click to collapse
Yeah they did. Well we did it to ourselves no? We updated lol
celestial0513 said:
Yeah they did. Well we did it to ourselves no? We updated lol
Click to expand...
Click to collapse
Yea its trye
My first Android phone was an HTC EVO 4G (the original WiMAX version). The first one that I got had an HBOOT with S-ON (locked bootloader). Reading on here, I found out that there were versions with an older HBOOT that had S-OFF, so I carted my butt down to the Sprint store and didn't even make up a story. I told them flat out what I wanted, and since I was still within the window of being able to cancel my contract, they took me back and let me look at the boxes that they had. I found one with the proper version, opened it up, verified that it was truly S-OFF and that was it.
Now, that was back in 2012 and things have changed since then. But if you just bought the phone, take it back and tell them exactly what you want. The LG V20 box has the software version that is installed on the UPC sticker.
-- Brian
runningnak3d said:
My first Android phone was an HTC EVO 4G (the original WiMAX version). The first one that I got had an HBOOT with S-ON (locked bootloader). Reading on here, I found out that there were versions with an older HBOOT that had S-OFF, so I carted my butt down to the Sprint store and didn't even make up a story. I told them flat out what I wanted, and since I was still within the window of being able to cancel my contract, they took me back and let me look at the boxes that they had. I found one with the proper version, opened it up, verified that it was truly S-OFF and that was it.
Now, that was back in 2012 and things have changed since then. But if you just bought the phone, take it back and tell them exactly what you want. The LG V20 box has the software version that is installed on the UPC sticker.
-- Brian
Click to expand...
Click to collapse
Nah my man I've had it since day one I'll just wait till September. 28 for the V30 or when ever it comes out.
I rooted soon as I got the phone... Then the USB port over heated and melted so I sent it in for repair. Came back with 10p on it.... Mfer..
Sent from my LG-H918 using Tapatalk
whojabacod6 said:
I rooted soon as I got the phone... Then the USB port over heated and melted so I sent it in for repair. Came back with 10p on it.... Mfer..
Sent from my LG-H918 using Tapatalk
Click to expand...
Click to collapse
Damn that sucks
runningnak3d said:
10p currently can not be rooted. There are some thoughts and ideas floating around, but more than likely another Linux kernel exploit will need to be found. Also, just an FYI, T-Mobile incremented the ARB version for 10p, so don't try to force an older version to flash -- that will blow the qfuse, and that is a hardware issue that can't be fixed without replacing the CPU.
-- Brian
Click to expand...
Click to collapse
Brian,
I'm not sure what version of the V20 you have, but I've got the H918 and I'm running 10p rooted with Magisk. I started with SuperSU, but wanted to start over and try out a systemless root. Real simple steps too..
1. Unlock bootloader
2. Flash SuperSU or Magisk
3. Root achieved.
I attached a couple of screenshots. How easy LG phones are to unlock the bootloader and flash root is the reason why I always buy LG phones, not Samsung.
Cheers!
Can't flash an su method if you can write to the boot partition (twrp)
Sent from my LG-H918 using Tapatalk
So no way possible to root then? My V20 is running H91810k and I have been looking for a way to root it but moments ago it turn off by it self on 13% and the update for 10p was in schedule....
Guess Im out of luck if when it turn on update itself.
@joesee You were on stock 10p? If so, how did you flash TWRP so that you could flash SuperSU? fastboot flash recovery does not work with 10p.
-- Brian
joesee said:
Brian,
I'm not sure what version of the V20 you have, but I've got the H918 and I'm running 10p rooted with Magisk. I started with SuperSU, but wanted to start over and try out a systemless root. Real simple steps too..
1. Unlock bootloader
2. Flash SuperSU or Magisk
3. Root achieved.
I attached a couple of screenshots. How easy LG phones are to unlock the bootloader and flash root is the reason why I always buy LG phones, not Samsung.
Cheers!
Click to expand...
Click to collapse
how did you root! and get twrp?
runningnak3d said:
10p currently can not be rooted. There are some thoughts and ideas floating around, but more than likely another Linux kernel exploit will need to be found. Also, just an FYI, T-Mobile incremented the ARB version for 10p, so don't try to force an older version to flash -- that will blow the qfuse, and that is a hardware issue that can't be fixed without replacing the CPU.
-- Brian
Click to expand...
Click to collapse
Don't know where you get your information from, but a qfuse will never be triggered with oem unlock on. and all it is is a warranty bit. just states that your warranty is void to the manufacturer.
They do have an anti-rollback counter but that is something totally different than a qfuse.
dudeawsome said:
how did you root! and get twrp?
Click to expand...
Click to collapse
He probably rooted with original build out of the box firmware and installed a rooted 10p via twrp
Has an ARB system ever been rooted?
I'm new to LG anti roll back.
We have a quasi-root with 10P, if starting from 10J.
MrPolite said:
Has an ARB system ever been rooted?
I'm new to LG anti roll back.
We have a quasi-root with 10P, if starting from 10J.
Click to expand...
Click to collapse
They only upped the ARB number because DirtyCow was fixed. Likely wont up it again until the next root is patched.
Doubt there is a way to mess with KDZ's to be able to make them flash. someone would have done it already.

US997 Model bootloader unlock some supported & some "NOT">>> WHAT GIVES??

US997 Model bootloader unlock some supported & some "NOT">>> WHAT GIVES??
So this is some what of an SOS in the form of a discussion..
I recently puchased the LG G6 US997 unlocked version.. At first I wasnt jumping on the root bandwagon immediately due to slow development.
As of lately things are starting to pick up so I gave it a whirl only to find out per the LG development site that my version (US997 "Z" is what LG called it) was not supported.. After multiple attempts and being advised form the LG site that I woul be locked out after 9 try's I bailed after 4..
Has anyone esle ran into this wall? If so whats the "work around"? (IF ANY)
Ive searched google for days and the dedicated thread by @autoprime and unless im missing something I keep coming up empty handed.
Any insight on this matter is extremley appreciated.. Thanks in advance:good:
Regards,
big nu said:
So this is some what of an SOS in the form of a discussion..
I recently puchased the LG G6 US997 unlocked version.. At first I wasnt jumping on the root bandwagon immediately due to slow development.
As of lately things are starting to pick up so I gave it a whirl only to find out per the LG development site that my version (US997 "Z" is what LG called it) was not supported.. After multiple attempts and being advised form the LG site that I woul be locked out after 9 try's I bailed after 4..
Has anyone esle ran into this wall? If so whats the "work around"? (IF ANY)
Ive searched google for days and the dedicated thread by @autoprime and unless im missing something I keep coming up empty handed.
Any insight on this matter is extremley appreciated.. Thanks in advance:good:
Regards,
Click to expand...
Click to collapse
Try a different browser and do a factory reset
big nu said:
So this is some what of an SOS in the form of a discussion..
I recently puchased the LG G6 US997 unlocked version.. At first I wasnt jumping on the root bandwagon immediately due to slow development.
As of lately things are starting to pick up so I gave it a whirl only to find out per the LG development site that my version (US997 "Z" is what LG called it) was not supported.. After multiple attempts and being advised form the LG site that I woul be locked out after 9 try's I bailed after 4..
Has anyone esle ran into this wall? If so whats the "work around"? (IF ANY)
Ive searched google for days and the dedicated thread by @autoprime and unless im missing something I keep coming up empty handed.
Any insight on this matter is extremley appreciated.. Thanks in advance:good:
Regards,
Click to expand...
Click to collapse
No use, that version​ (US997z) is not supported!! Only the US global market variant US997 (without the z) is, and the Global Euro variant (H870)... Everyone else can't get root or bootloader unlocked...
Unfortunately, that's how LG rolls.
Sent from my LG-H870 using Tapatalk
lmiked said:
No use, that version​ (US997z) is not supported!! Only the US global market variant US997 (without the z) is, and the Global Euro variant (H870)... Everyone else can't get root or bootloader unlocked...
Unfortunately, that's how LG rolls.
Sent from my LG-H870 using Tapatalk
Click to expand...
Click to collapse
gillim74 said:
Try a different browser and do a factory reset
Click to expand...
Click to collapse
Is this based on first hand experience? @gillim74 did you have the same problem and this work? Thanks for responding btw
big nu said:
Is this based on first hand experience? @gillim74 did you have the same problem and this work? Thanks for responding btw
Click to expand...
Click to collapse
It did for mine but i dont have the z i just have us997 but as far as i knew all us997 could be unlocked but i may be wrong
gillim74 said:
It did for mine but i dont have the z i just have us997 but as far as i knew all us997 could be unlocked but i may be wrong
Click to expand...
Click to collapse
US997z can't be unlocked!!
Check the supported device list at the unlock website!!
Sent from my LG-H870 using Tapatalk
lmiked said:
US997z can't be unlocked!!
Check the supported device list at the unlock website!!
Sent from my LG-H870 using Tapatalk
Click to expand...
Click to collapse
Didnt know that when i did mine it listed us997 no different variants thanks for the info
The exact thing happened to me. I thought I was buying the US unlocked phone. Nowhere in the software or on the box does it list the phone as US977Z. '
Turns out it's the US Cellular variant of the phone. If you'd like, commit to the bounty thread for this phone. It's our only hope.
Looks like I have the same problem with the US997U. I thought that extra U on the end just meant Unlocked, but that tiny difference is preventing me from unlocking my phone. Lame.

Need help to root H91810k

Hello,
First off, thank you for clicking on this post. I'm new on XDA and rooting LG phones. However, I've searched help on posts and other sites on how to root LG V20 H19810k (T-Mobile Variant) and many told me to downgrade first and then root. But none exactly gave any instruction or step by step on how to do it.
My worries are these ARB (Anti-Roll Back) software updates and if you were to downgrade, you will brick your phones and things like that, it's LG (I mean like there are a lot of complains about hardware faulty after phone updates and lawsuits about it), and different steps on each variants. I bought this phone like 2 or 3 months ago, and my thought on this phone's software is sucks so bad. It's so bad, I've had many problems like my mobile data often times stopped working (no network) even though signal is full bar, my live pixel background suddenly gone after playing this specific game, serious low fps in some games, RAM is full all the time, and many more. The phone itself has amazing hardware and specs, but damn why is the software so bad?
Right, so all my problems aside, I think switching ROM or downgrade probably a good idea and rooting for removing bloatwares. But many had problems installing twrp recovery to root and risks like bricking and bootlooping. And in this post, I'm hoping for help to downgrade and root H91810k.
ignoll said:
Hello,
First off, thank you for clicking on this post. I'm new on XDA and rooting LG phones. However, I've searched help on posts and other sites on how to root LG V20 H19810k (T-Mobile Variant) and many told me to downgrade first and then root. But none exactly gave any instruction or step by step on how to do it.
My worries are these ARB (Anti-Roll Back) software updates and if you were to downgrade, you will brick your phones and things like that, it's LG (I mean like there are a lot of complains about hardware faulty after phone updates and lawsuits about it), and different steps on each variants. I bought this phone like 2 or 3 months ago, and my thought on this phone's software is sucks so bad. It's so bad, I've had many problems like my mobile data often times stopped working (no network) even though signal is full bar, my live pixel background suddenly gone after playing this specific game, serious low fps in some games, RAM is full all the time, and many more. The phone itself has amazing hardware and specs, but damn why is the software so bad?
Right, so all my problems aside, I think switching ROM or downgrade probably a good idea and rooting for removing bloatwares. But many had problems installing twrp recovery to root and risks like bricking and bootlooping. And in this post, I'm hoping for help to downgrade and root H91810k.
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Search this forum there's numerous threads on how to root
Sent from my LG-H910 using XDA Labs
Downgrade to 10j and use DirtySanta, or use lafsploit.
IMHO they are about equally difficult. In the lafsploit thread, I state that you have to be on 10p or 10q, but I will update the post stating that you need to be on 10q or LOWER.
DirtySanta doesn't require you to use FWUL, so it does have that advantage.
Bottom line though, you can't stay on ARB 0 firmware and use any of the current ROMs -- they all require 10p or higher firmware.
-- Brian
cnjax said:
Search this forum there's numerous threads on how to root
Sent from my LG-H910 using XDA Labs
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Thank you for the reply,
Seems I got it a little bit. So what I've been looking at this dirtythis and that unlock stuff for quite a while. I've been wondering if anyone asked about H918. I just realized that this dirtysanta bootloader is an exploit for other variants that don't support unlocking via fastboot.
So then I proceed to unlock my device and it successfully unlocked. (Follow this post to unlock).
I will try downgrading my device via lgup and will follow this post to flash and root.
ignoll said:
Thank you for the reply,
Seems I got it a little bit. So what I've been looking at this dirtythis and that unlock stuff for quite a while. I've been wondering if anyone asked about H918. I just realized that this dirtysanta bootloader is an exploit for other variants that don't support unlocking via fastboot.
So then I proceed to unlock my device and it successfully unlocked. (Follow this post to unlock).
I will try downgrading my device via lgup and will follow this post to flash and root.
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Be careful about your rolling back to root, check your current software version and and if you're arb 1 you'll brick. If you're arb look up the laf exploit thread
Sent from my LG-H910 using XDA Labs
He said he is on 10k, so he is safe to rollback to 10j which can use recowvery.
@ignoll Whatever you do, DO NOT flash the engineering aboot, or you will brick your phone. Follow the procedure in the post you linked, and you will be fine. DirtyCow gets you a temp root shell that will allow you to dd TWRP onto the recovery partition. If you get an error when you do run-as con, then you are NOT on 10j or lower. If you try to downgrade and you get an error about ARB, then you are NOT on 10k.
Just keep all that in mind and you will be fine.
-- Brian
runningnak3d said:
He said he is on 10k, so he is safe to rollback to 10j which can use recowvery.
@ignoll Whatever you do, DO NOT flash the engineering aboot, or you will brick your phone. Follow the procedure in the post you linked, and you will be fine. DirtyCow gets you a temp root shell that will allow you to dd TWRP onto the recovery partition. If you get an error when you do run-as con, then you are NOT on 10j or lower. If you try to downgrade and you get an error about ARB, then you are NOT on 10k.
Just keep all that in mind and you will be fine.
-- Brian
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Thank you for the reply,
Just to make sure, 10k is the software version which you can find in the software info inside the settings app, right? This software info will show stuff about "Android version", and down on the list, there's the "Software version" and below it is the 10k coming from (H918xxx). Or, check it via svc menu and version info through the dialer app. All that is to check whether I'm in the correct version or not, yes? (Sorry for this silly question, I just want to make sure. I'm really new to this)
And yes, I won't flash this engineering aboot, just follow the instruction and I'll be good. But just to make sure again, there's no this "engineering aboot" thing in the post that will brick my device, yes?
That said, I really appreciate for your warning and advice.
stuff about "Android version", and down on the list, there's the "Software version" and below it is the 10k
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Yep, that means you are on 10k, so you are safe to rollback.
-- Brian
runningnak3d said:
Yep, that means you are on 10k, so you are safe to rollback.
-- Brian
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Please, i am also stuck and confused, as i understand LG devices, downgrading may cause device to go dead completely, i want to be sure before i begin this process. Here is my device Software Info:
Software Version: H91810K
Build Number: NRD90M
My device is locked to T-mobile, and i want to unlock using Octopus Box as i have credits. Unlocking requires root, is it possible to downgrade to the mentioned version 10j and not brick device? Any one can help me on this.
kenneth excellence said:
Please, i am also stuck and confused, as i understand LG devices, downgrading may cause device to go dead completely, i want to be sure before i begin this process. Here is my device Software Info:
Software Version: H91810K
Build Number: NRD90M
My device is locked to T-mobile, and i want to unlock using Octopus Box as i have credits. Unlocking requires root, is it possible to downgrade to the mentioned version 10j and not brick device? Any one can help me on this.
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If you root your phone it will be unlocked no need to use an octopus box.
Sent from my LG-H910 using XDA Labs
That is only true if the engineering bootloader is used. The H918 still needs work to get it carrier unlocked.
-- Brian
cnjax said:
If you root your phone it will be unlocked no need to use an octopus box.
Sent from my LG-H910 using XDA Labs
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Are you serious? If this is possible how do i root since i am on H91810K Software version?
cnjax said:
If you root your phone it will be unlocked no need to use an octopus box.
kenneth excellence said:
Are you serious? If this is possible how do i root since i am on H91810K Software version?
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He is serious, but incorrect.
runningnak3d said:
That is only true if the engineering bootloader is used. The H918 still needs work to get it carrier unlocked.
-- Brian
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You need to pay attention to runningnak3d when he says something about root and the V20.
Cheers

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