yashsingh1/xdaforums huggingface dataset:
[LG V20 Guides, News, & Discussion] xarekusu:
do I need to be on a certain version of LS997 firmware to root? will ZV8 or ZV9 work or I need to be on ZV7 and below

thanks
[LG V20 Guides, News, & Discussion] GleenCross:
Tried this after converting my h91010I to H91510e_00_VTR_CA_OP_1205.. I didn't even tried to unlock the boatloader with the stock 910 because the android security patch was dated march of 2018... and it seems we need the phone to have a older security patch. So, I converted to 915 and follow every step... And it didn't worked. The phone stuck at the boot screen, also follow the step for that (flashing the Boot 2 image) the phone restarted and a blue screen appeared, "subsystem crashed"... Tried to reboot, same blue screen. I repeated the process, now this time I converted the phone to US99610f_00_1205.kdz.. And the phone is asking me the PIN to unlock it. Tried the PIN I configured before the conversion, then I tried 0000, 1111, 1234, etc.. The damn thing don't unlock, so I can't use the terminal emulator... This is frustrating, lol Can anybody recommend me another firmware to convert, another method, anything?
[LG V20 Guides, News, & Discussion] cnjax:
Wrong it isn't that simple that site's info is bogus.

Take a look at this thread

https://xdaforums.com/v20/how-to/root-h910-v10m-t3664500/page123

---------- Post added at 02:54 AM ---------- Previous post was at 02:52 AM ----------

Yes you have to be on an earlier security patch, but you won't be able to downgrade because arb was incremented
[LG V20 Guides, News, & Discussion] ankade:
VS995 easier than h910 ?

When now comparing all the different v20 versions, it look as if the h910 is an exceptionally difficult case?

Now there might be one opening in the matrix for me - the seller's order management system has f***ed up my order, and they would send it out only tomorrow.

OR I could cancel the h910 order now, if I am quick.

There is another offer, more expense - but if it is easier to unlock & root, I would happily pay that.

--> Is the V20 VS995 (Verizon) easier to liberate than the h910 ?

Thanks a lot!
[LG V20 Guides, News, & Discussion] Vortell:
I think so, but why not try to get a us996? I am pretty sure using Verizon on any gsm means missing bands for lte.
[LG V20 Guides, News, & Discussion] ankade:
Simple answer: None available. Also not on Amazon.

But I can order a vs995, for a 38% higher price than the h910 which I can probably still cancel.

Oops.

So VS995 means its bands are castrated, compared to other v20 ?

The ad just says "This is the VS995 (Verizon) variant ... It is SIM unlocked"

Then I should probably cancel that h910 purchase, no?

Thanks!
[LG V20 Guides, News, & Discussion] Buzzy42:
Just curious, would it make sense to upgrade a Verizon VS995 to the latest 12A before rooting, just because it doesn't appear (at this time) to block the exploit, and I haven't seen a way we can move up to it after rooting at this point? Or is there some value in staying back on the older versions anyway?
[LG V20 Guides, News, & Discussion] danslb:
wow what a flurry of activity here. does anyone have an idea if this might be a window of opportunity for the stalled attempts to unlock the LG flex 2 boot loader? There is a bounty out but not much activity.
[LG V20 Guides, News, & Discussion] me2151:
You can update. Im not sure what it changes honestly. But dirtycow is not patched in that update so you are good.
[LG V20 Guides, News, & Discussion] me2151:
Just sent you step by step instructions FOLLOW THOSE EXACTLY. I need to sleep so I am going to bed now. You will be fine. you are not bricked. just follow the PM'd instructions.
[LG V20 Guides, News, & Discussion] Alcolmena:
Our dev with the h915 might be working quietly in this case. Any update it's greatly appreciated unless this would take longer than expected. Thanks.
[LG V20 Guides, News, & Discussion] Fobos531:
[MENTION=4591212]me2151[/MENTION] HOLY ****. YOU GUYS ARE ****ING LEGENDS. THANK YOU SO MUCH!

I have a question. Can you briefly explain the technical side behind this bootloader unlock (besides flashing a debug bootloader)? Most importantly, would it be possible to do the same thing for pre-V20 LG phones like the Spirit 4G LTE or G4?

Once again, even though I don't own a LG V20, THANK YOU GUYS. SO MUCH.
[LG V20 Guides, News, & Discussion] Matt07211:
Dirtycow itself would be fine (until a security update blocks it ), but the differentiating factor between these devices is the availability of a DEBUG bootloader. The debug bootloader in use here is unlocked (which means it doesn't verify the boot.img (boot.img verify the /system partition etc), and thus chain of trust can be broken without dear of a brick)., thus you won't get locked out of the device when messing with partitions).

Now let's say dirtycow still works (I.e. security update hasn't patched it) and you have a debug/unlocked bootloader image on hand, you'd only need to find a file_context that has read/write permissions to bootloader (dump the contents of your sepolicy and search through its contents for a file context with the desired permissions). You can then daisychain dirtycow/exploits until your under that context, and then overwrite the bootloader (while in that context) with the debug version.

Hope this gives you some insight into this.

Note: my resereved post (#4) I plan to go into technical detail about me2151 and glischi work on this, so keep an eye out for that if your interested ;)
[LG V20 Guides, News, & Discussion] elliwigy:
lmao really man? This thread is for V20 DEVICES.. it uses debug files from a V20.. they WILL NOT WORK on non v20 devices

---------- Post added at 01:34 PM ---------- Previous post was at 01:32 PM ----------

NO. This uses V20 specific files from a debug phone, they will NOT work on other devices.. if you can find some debug files then itd probably work in a similar fashion
[LG V20 Guides, News, & Discussion] Lumince:
If ive taken an OTA Update but not the security update, can I still use this?

Also, why is it that the youtube app refuses to work?
[MENTION=4591212]me2151[/MENTION]
[LG V20 Guides, News, & Discussion] Fobos531:
Sure thing. Although I'm not that experienced with it, I'll follow this thread. Can you tell me where you got the debug bootloader?
[LG V20 Guides, News, & Discussion] Matt07211:
I'm not sure sure, I believe the person (current owner) brought it off another XDA person (seller) (but that person (seller)left the phone encrypted on purpose), as for where that xda person (seller) got it from I am not sure.
[LG V20 Guides, News, & Discussion] Fobos531:
Well, I hope he'll show up and give us the source from which he got the bootloader :/
[LG V20 Guides, News, & Discussion] Matt07211:
You'll need a debug bootloader image from/for your device :/ good luck trying to get ahold of that.
[LG V20 Guides, News, & Discussion] me2151:
Youtube does not work because of the debug kernel. I have found a way to use other kernels but its not ready. I have working youtube and fm radio on my sprint device now.
[LG V20 Guides, News, & Discussion] elliwigy:
what security patch is on your phone? and its kernel related

---------- Post added at 02:37 PM ---------- Previous post was at 02:35 PM ----------

he didnt get a bootloader.. he spent 840$ for an entire phone that had debug firmware on it.. and i would NOT recommend buying from those ppl if they even did have it.. theyre very shady and probably stole the phone and sold it with a sig lock that took days to fix
[LG V20 Guides, News, & Discussion] Lumince:
I havent taken the security patch. Mine says October 1, 2016 is the patch level. I took an update just yesterday because I thought hope for rooting this phone was gone. But then I looked on here... I should have checked before.
[LG V20 Guides, News, & Discussion] ubergeek77:
Has it been determined whether or not Wi-Fi Calling is a kernel issue or a provisioning issue?
[LG V20 Guides, News, & Discussion] elfysrfr:
1st off A HUGE THANK YOU to the devs for the root method!! After coming from the galaxy note edge, I forgot how awesome root was.

Question: (sorry if its been asked already) But is there a way to hide root, such as SUHide? Got a few apps and games is still like to use on this phone but have to hide root access. Thanks for any help

ATT H910
[LG V20 Guides, News, & Discussion] Bread Bucket:
Still getting bad lag, and I am more than 100% certain I did the final steps correctly. It's not constant, only in certain situations. For instance If I open an app and click the home button while its still loading, the home button lags so bad that it registers it as a double click and zooms out to my three homescreens. Also, battery life not so good. Used to only get 1-2% battery drain over night, now getting 7-8%.

But I still do want to thank the devs for coming up with a method for root.
[LG V20 Guides, News, & Discussion] Team DevDigitel:
i just got 2 v20s for sprint to test on,

anyone just tried to do the bootloader unlock then push the boot.img and do the format data and let it re-install with the stock/without encryption?

this is how i managed to clear all the htc bolt issues up.... anyways gonna start testing now and working with some others on fixes.

please feel free to pm me with any info on this subject
[LG V20 Guides, News, & Discussion] Vortell:
I don't know if h910 has arb or if they removed download mode. There is at least one version that this has happened to I think it's h918 but I don't know. The version you should get should be based on what bands you needed before anything else. The one with the most available bands is the us996. Or international version for non-us countries. Not sure of model number for that. I think you can unlock h910 but there are guides in the guides are that could better guide you. You have to do the leg work and find out to be sure
[LG V20 Guides, News, & Discussion] ankade:
do I really needs those bands?

the us996 is not available anywhere though anyways.

my only choice now is between h910 (perhaps hard to liberate; no way back to stock ROM) or the vs995 that I am considering to get instead.

I get you, thanks a lot.

Thus, I have now compared these two pages

vs995 https://www.frequencycheck.com/models/GBmxR/lg-vs995-v20-xlte

h910 https://www.frequencycheck.com/models/vVVRj/lg-h910-v20-lte-a-h915

but only looking at the LTE & CDMA chapters.

They have 6 common LTE bands

B2 (1900 PCS); B3 (1800 +); B4 (1700/2100 AWS 1); B5 (850); B7 (2600); B20 (800 DD)

but

vs995 has additionally

LTE B13 (700 c) https://www.frequencycheck.com/bands/lte-band-13-700-c

CDMA BC0 (800) https://www.frequencycheck.com/bands/cdma-band-0-800

CDMA BC1 (1900 PCS) https://www.frequencycheck.com/bands/cdma-band-1-1900-pcs

h910 has additionally

LTE B1 (2100) https://www.frequencycheck.com/bands/lte-band-1-2100 (*)

LTE B12 (700 ac) https://www.frequencycheck.com/bands/lte-band-12-700-ac

LTE B17 (700 bc) https://www.frequencycheck.com/bands/lte-band-17-700-bc

LTE B30 (2300 WCS) https://www.frequencycheck.com/bands/lte-band-30-2300-wcs

but no CDMA

I am mainly in Europe, sometimes in Asia. At first sight it looks as if I would not be missing much, only perhaps the (*) LTE B1 (2100).
[LG V20 Guides, News, & Discussion] Vortell:
Just cross compare it with the same frequency check website and your service provider. There are us996s on eBay. honestly though just look here ther is more then enough about h910.

https://xdaforums.com/v20/how-to/guide-root-twrp-lg-v20-using-dirtysanta-t3722278
[LG V20 Guides, News, & Discussion] ankade:
Not in Europe:

Thanks a lot.

Yes, but the h910 and the LS997 "cannot return to stock because there is no KDZ available" (perhaps bad for selling it again, or if unlock/root/LineageOS does not work out).

That is a very good idea, thanks.

Both countries I am mostly in, both providers ... have no problem at all. Both phones support those LTE bands that I need there.

Thanks a lot, Vortell, for all your hints. Much appreciated. So much learning ... ;)
[LG V20 Guides, News, & Discussion] Vortell:
Why not just go to us site then? Plus I think there is compatible kdz the h915. Also isn't h990 the one they sell in eu?
[LG V20 Guides, News, & Discussion] ankade:
phone specs h910 - any hint how to unlock and root ... much welcome!

Finally, the phone is here. I made sure to NOT connect it to the internet, so no updates are happening, etc.

Looks like I am lucky, I got a VERY old version of everything, right?

Software info:

Android version: 7.0

Android security patch level: December 1, 2016

Baseband version: MPSS.TH.2.0.1.c3-.... (very long. important?)

Kernel version: 3.18.31

Build Number: NRD90M

Software version: H91010I

Security software version: MDF v2.0 Release 4

Hardware info:

Model number: LG-H910

So now ... may the liberation begin ;)

Any hint much welcome!

Thanks :D
[LG V20 Guides, News, & Discussion] stsz1954:
Hello. I just bought a lg v20 h910, version 10c. I have followed the steps in this rooting guide. It went OK until I got to the step ./step3.sh. I got a permission denied error. I could see that I was in fastboot mode. I didn't know what else to do at that point, so I pulled the battery. Now, when I turn the phone on, I get nothing but white static. I would greatly appreciate it if someone can show me how to fix this and in the end get a rooted phone. Any help would be most welcome. Thanks.
[LG V20 Guides, News, & Discussion] Vortell:
As long as the phone has download you can use patched lgup lg v20 to restore stock kdz. Otherwise I think it should have worked from what I know.

This is an updated method:

https://xdaforums.com/v20/how-to/guide-root-twrp-lg-v20-using-dirtysanta-t3722278/page20

Patched lgup:

https://xdaforums.com/v20/how-to/guide-patch-lgup-to-unlock-features-t3652222
[LG V20 Guides, News, & Discussion] cnjax:
There's no kdz for the 910
[LG V20 Guides, News, & Discussion] Vortell:
Could be a file permission issue on you computer. Try running it as administrator with the right mouse button.

He said the bootloader was unlocked. The other thing he could do is try fastboot command to flash twrp on to it. In fact I would try that next after trying to run the command as administrator. Make sure the twrp file is not locked or something too. For fastboot flash make sure you have adb/fastboot:

https://xdaforums.com/showthread.php?t=2317790&page=84

Then since you are in fastboot skip to step 4 here:

https://www.xda-developers.com/how-to-install-twrp/

As a last resort try h915 kdz... I read that has worked for some with extra steps.

https://www.reddit.com/r/lgv20/comments/96405m/i_flashed_h915_kdz_on_my_h910_and_it_works_fine/

It's Oreo though so root and bootloader would be very hard to get. Think it's possible though since they have done it with the v30.. it has not been ported fully to the v20 that I know of though.
[LG V20 Guides, News, & Discussion] Musiv:
is there anyway to rid the constant vibration on every bootup
[LG V20 Guides, News, & Discussion] cnjax:
If you're referring to the 995 no there isn't
[LG V20 Guides, News, & Discussion] ankade:
Bricked ?

[IMG="waiting for any device"]https://i.imgur.com/pUjMkZj.jpg[/IMG]

[IMG="fastboot closeup"]https://i.imgur.com/zTBPpnW.jpg[/IMG]

[IMG="in fastboot, the computer cannot see the device"]https://i.imgur.com/BhmnTGl.jpg[/IMG]

[IMG="this is how it looks when it boots. I hear the startup sound, but cannot read anything."]https://i.imgur.com/E2rdye1.jpg[/IMG]

The whole situation in many photos: https://imgur.com/a/Gi7ZBMH

Another user has exactly the same problem:

computer cannot see phone when it is in fastmode

Bricked?
[LG V20 Guides, News, & Discussion] Vortell:
Looks like a dirty Santa Boulder screen actually. Wait for like 10 minutes then press power button twice slowly. if it doesn't work give it 10min more and try again. After that you can try to load straight into recovery. Hold power & down vol tell u see lg logo then release power and press again as fast as possible. Should get all white screen why a warning to do factory reset you have to use vol down then power button twice. Don't worry about the erase dialog just press it. You will either factory reset or get to twrp. The big thing is weather or not it every showed twrp downloaded. Not sure why its serial number shows us996 though... Maybe they all do. If you want to before the twrp check you could read up on fastboot a little. Install it and try to see if it responses. I think the most basic command is "fastboot devices" then use that to manually flash twrp. It at least try to. That's why I have you the previous links. It's what I would have done before asking anything else. That screen though it's normal for dirty Santa first boot. At least tell you change the kernel.
[LG V20 Guides, News, & Discussion] ankade:
now really bricked?

Done:

https://imgur.com/gallery/GhnkJh7

[IMG="factory reset"]https://i.imgur.com/4PzTdHb.jpg[/IMG]

Did that. Felt good. I was full of hope for a moment. but:

Didn't help.

It never did, I am sure.

It always got stuck before step3.

because in fastboot mode, the phone was never seen by the computer, so TWRP could not get flashed.

i.e. something in step1 or step2 must have been wrong, at least for my December 2016 android h910 ?

Yes.

And (while the fon was still answering when fully booted up yesterday) in "adb devices", it also showed "List of devices attached: LGUS9964b2........", see this pic https://i.imgur.com/vc66qGa.jpg

Or perhaps dksoni411's scripts did that??? Perhaps they have been flashing something-us996 onto my h910 - and that is also why it did not work out?

yes.

but device is not visible for computer when in fastboot. It shows nothing when I do "fastboot devices". And "zflashboot1.cmd" ("this step will flash TWRP") hangs in an infinite loop saying "< waiting for any device >".

The worst now, and I think we have made it worse by your factory reset now:

Yesterday I could still repeat step1 and step2, because when the phone was booted up, I could not SEE through the white noise static, BUT at least "adb devices" came back with this: https://i.imgur.com/vc66qGa.jpg while the fon was booted up. And I could repeat step1 and step2, and they seemed successful each time.

Now I cannot repeat steps 1 and 2 anymore. Different from before.

Probably because with the settings deleted by factory reset, the USB debugging is disabled now, right?

And I cannot re-enable "USB debugging", because I cannot see anything on the screen anymore but white noise static.

Now it's really bricked?
[LG V20 Guides, News, & Discussion] Vortell:
1. You did try to let it start for a while right? For like 20mins?

2. Did you use adb command to reboot into fastboot? That's "adb reboot bootloader". Or did power down(pull battery) connect USB to phone and computer while the phone is off then press power button and and vol down? Otherwise not in fastboot mode... Hopefully you Read the link I locked earlier. Still not sure why it shows as us996 on adb...

https://xdaforums.com/android/help/adb-fastboot-commands-bootloader-kernel-t3597181

Last thing to do assuming it really is a h910 is to just flash the h915 kdz with patched lgup. Since you're keeps saying us996 I'm not sure. The way you tell is look at the label under the battery. It should say h910. The att symbol could just be a mixup. Even if it booted up with att symbol the device could have been previously bootloader unlocked and flashed with att rom. https://xdaforums.com/v20/how-to/guide-lg-v20-to-life-t3827732/page2

Then go to:

Get a nougat kdz before 10p

https://lg-firmwares.com/downloads-file/4578/H91510e_00_VTR_CA_OP_1205.kdz

Then try to flash it. It's the last chance I told you about.

Here is video below. Now I'm done. It's too hard to help if you don't tell me what you have tried. The video should be able to guide you. There are others if you search as well.

[youtube]jnRWnSHLGSc[/youtube]
[LG V20 Guides, News, & Discussion] ankade:
answers

Thanks a lot for your long answer, much appreciated.

Yes. Several times. And long.

Now, when I look between the static on the screen, I am almost sure that I can see the initial android phone screen where one chooses the country, and language. So your factory reset has worked.

What else can I tell you?

There is no TWRP on it, because I always got stuck before STEP3, i.e. before TWRP could get flashed.

I was able to boot into fastmode, but then computer then cannot see it. "fastboot devices" is empty, "adb devices" is empty.

before, it always worked, first time as part of the whole procedure of dksoni411's scripts, and later via dksoni411's advanced option "reboot to fastmode".

It then always booted into this: https://i.imgur.com/zTBPpnW.jpg and from then onwards nothing worked because the computer could not see the phone in fastmode.

BUT anything "adb" won't work anymore now. Because factory reset?

Now "adb devices" always comes back empty. Very probably because USB debugging is not switched ON anymore, see above.

Yes, I did that too.

Actually, one doesnt have to press power. Just hold VolDown while pluging in the USB.

This is fastboot, no?

--> https://i.imgur.com/zTBPpnW.jpg

Yes, it does say LG-H910 under the battery.

And look at the pre-unlocking status, I specifically looked it all up before, and posted it above. (Next time I am cleverer, and will analyze the not-yet-unlocked phone already with "adb" and "fastboot" BEFORE starting, but) I had looked it up from within the booted stock Android:

that says h910, and H91010I !

Is it possible that the ominous us996 comes from dksoni411's scripts? https://xdaforums.com/v20/how-to/guide-root-twrp-lg-v20-using-dirtysanta-t3722278 Perhaps he is indiscriminately flashing the same us996 thing onto any phone, even h910 ?

I do. Man, I even made photos. Look at these 2 galleries https://imgur.com/a/Gi7ZBMH and https://imgur.com/a/GhnkJh7.

But let me tell you whatever you want to know. Thanks so much for helping me. That is why I am answering your questions now first.

As dksoni411's approach got stuck irrecoverable ... I guess, I have to try to flash a stock ROM onto the phone now, right? Hopefully that works, and without needing USB debugging, because I cannot see anything on the screen. But anyways, I am ahead of myself. First follow your links. But I wanted to answer your questions first. NOW I will start reading, and watching the video. Thanks for the links, and ideas. You're great!

---------- Post added at 11:14 PM ---------- Previous post was at 11:12 PM ----------

Actually, is there a deeper reason why no one here is recommending THIS clever step - as a step0 before any of these dangerous root & unlock manuals?

--> Make sure you dump your phone with LGUP before root
[LG V20 Guides, News, & Discussion] Vortell:
I would just try the h915 kdz then. You could try to for through setup with static and install terminal again. Honestly not sure what happened but the second guide worked better for me. As long as it boots you should be able to change to USB debugging on then root and flash a package with h910 rom. Might have to do something with modem but as you can see in your link you can flash via fastboot.
[LG V20 Guides, News, & Discussion] ankade:
Reinstall lg driver !!!

Hooray, I can see the device now in "fastboot devices" ! What did I do?

1 Uninstall the LG driver in add/remove programs

2 remove it from device manager ... android ... driver ... uninstall

3 reinstall this one: LG driver 4.2.0 mentioned here

Reinstall the LG driver, then fastboot works!

I am NOT there yet, but at least I could finally do step3, hooray. Static whitenoise screen is not there anymore.

I thought I tell you as quickly as possible. Will keep you posted.
[LG V20 Guides, News, & Discussion] ankade:
TWRP?

what is the buttons combination to start TWRP on the V20 ?
[LG V20 Guides, News, & Discussion] Vortell:
If installed you have to be pressed down fully. Then press power and vol down. Wait to see lg logo then release power button for a second then hold down again tell you get screen asking if you want to reset device it's all white. Next down volume then power to select it then do the same thing in the next screen.

Thought you would have gotten the right drivers first... Honestly almost told you to try to uninstall and get correct drivers...