yashsingh1/xdaforums huggingface dataset:
[OnePlus 6T  Questions & Answers] ennischris93:
Gonna bump one time, if nobody has any advice I'll delete thread.
[OnePlus 6T  Questions & Answers] pbergonzi:
Find Mauronofrio's TWRP and instructions here:

https://xdaforums.com/oneplus-6t/development/recovery-unofficial-twrp-touch-recovery-t3861482

During TWRP install, it offers to leave system partition unmodified, stating something like "Easier to receive official updates." which I think I did, but ALSO I switched my Tmo branded to International from I believe here:

https://xdaforums.com/oneplus-6t/how-to/t-mobile-6t-to-international-t3888307

I don't recall every getting any kind of update without permission.

More recently, I flashed Omega Kernel to have guitardedhero's Dolby Atmos sound mod (but don't think this affected the update method) from here:

https://xdaforums.com/oneplus-6t/development/kernel-aoxp-kernel-1-0-t3905381

Good luck.
[OnePlus 6T  Questions & Answers] ennischris93:
I appreciate your input, I'll see what I can do.
[OnePlus 6T  Questions & Answers] spider451:
I'm on the international version I used an old familiar method thats worked on previous android builds. I take no responsibility if you have a issue of any kind. I was on PIE and didn't want the update notification driving me nuts because 10 was in it's early stages. I used an old version of rom toolbox, opened App manager and scrolled down to find system update APK (s). There were 2 of them I only needed to freeze the 1st one.

Good luck

(Edit fixed typos)
[OnePlus 6T  Questions & Answers] sachin09:
The way i used to block update notification and automatic update. It uses adb commands. It works without root.

1. Usb debugging on

2. Computer with adb drivers

Open command window in pc and connect your oneplus and run these commands one by one.

Commands are

Adb devices (for checking device is connected)

Adb shell

pm uninstall -k --user 0 com.oneplus.opbackup

exit

This prevent download and notification. But make sure you uncheck or disable automatic download in system update setting.
[OnePlus 6T  Questions & Answers] ennischris93:
Do you remember what those two apks are called? I tried looking up what they would be before I even started this thread but couldn't find the names. I'm also considering flashing the international version as well if all else fails.
[OnePlus 6T  Questions & Answers] spider451:
Yes it's system update.
[LG V30 Questions & Answers] ohmmmmmmm:
Really frustrating experience with getting LGUP to run, I downloaded at least 5 versions of it, and at least 3 msis for DLLs before getting a combination that worked. In the xda guides I'm following, none of that is specified.

So I flashed US99820h_00_0318.kdz, as one of the steps. Now, I'm in LG Life's Good boot loop. It's just restarting over and over, showing me LG Life's Good, vibrating for a minute or two, and restarting again.

Any ideas? Tried pushing buttons and plugging unplugging from computer with USB. LGUP flashed successfully, and said click here to continue, all appeared well. Now, the LG V30 has lost its mind.
[LG V30 Questions & Answers] ChazzMatt:
What variant do you have (what did the start with)?

What specific guide are you following?

One of the steps of WHAT? What are you trying to do?

Frankenstein to another variant?

Just update to Pie?

Bootloader Unlock and Root?

You don't say.

All the Dev Patched LGUP I post in the KDZ threads work fine. You just need to read the instructions carefully. (On the Pie version you have to use the setdev.bat option and only launch from desktop shortcut, not the download folder. It's IN the instructions.) Uninstall any prior version. There's also Troubleshooting Tips posted with every installation guide.

There's not 5 different versions in this forum, only two -- that I know of, that I've posted.

If you are getting Dev Patched LGUP from elsewhere, go ask them.

1) The one in the Frankenstein/Pie KDZ threads work to downgrade from Pie or to flash other Pie KDZ.

The one in Frankenstein instructions is identical to the Pie KDZ thread. It's the newest.

2) The one in the Oreo KDZ threads (slightly older but kept around for a valid reason) work with Oreo, Nougat, or to update to Pie.
[LG V30 Questions & Answers] ohmmmmmmm:
I'm following your guide https://xdaforums.com/showpost.php?p=76584629&postcount=193.

It repeatedly says, "if you need to downgrade to Oreo, we got you", but never explains how to go to back to Oreo. Ctrl+f "lgup", and... nothing.

"LG has now patched this, but you can temporarily downgrade to earlier Oreo firmware."

In step 4, "If you have US998, H930, V30S and are on Oreo already -- with pre-July 2018 security patch firmware, then go to Section 5."

There's nothing for "If you have US998, H930, V30S and AREN'T ON pre-July 2018 Oreo, follow these steps to get to Oreo. You leave that exercise up to the reader, before going to Step 5. It took me forever to get LG Up running, using other guides, and the KDZ you mentioned. Now, I'm stuck in bootloop, and can't flash a different KDZ or take control of the device in any way.

https://xdaforums.com/showpost.php?p=79964731&postcount=2 was one resource I used to finally get LGUP to run, but I don't have DL PARTITION as an option, so I ran UPGRADE, following another guide on LGUPping a KDZ onto the LG V30, from googling, "how to run LGUP LG V30", and getting through problems with the model folder not having the model and DLL not being correct.

I'm stuck here, as I imagine everyone with an LG V30 not on Pre-July 2018 Oreo would be, because there are no steps for flashing Pre-July 2018 Oreo in the guide.
[LG V30 Questions & Answers] ohmmmmmmm:
More details in my earlier reply. This forum is weird that it doesn't alert for replies, only quotes, so I quoted you.
[LG V30 Questions & Answers] ChazzMatt:
I'll say this in the shortest way possible. If to don't have DL Partition option then you simply didn't follow the instructions to install the Dev Patched version.

The WTF instructions send to you the links to download the pre July 2018 firmware for your particular variant and THOSE threads (like the US998 Oreo) give instructions to not only install Dev Patched past LGUP correctly but again reiterate which KDZ to downgrade to.

This isn't stated in the WTF instructions themselves because there's over 30 variants. You go down through each section of the WTF instructions like a decision tree...

If I have this, I do that.

If I have done A, then go to B.

It's important to read the WTF instructions thoroughly, even print them out. Read them in a web browser and not an app (XDA and Tapatalk apps truncate entire sections. This is noted at the very top of the WTF instructions.)

If you have US998 then you need to temporarily flash 20a or 20b for Bootloader Unlock. I'm not sure why you flashed 20h yet. US998 20h is not pre-July 2018 firmware.

See screenshot. This tells from WTF INSTRUCTIONS tell you that for US998, your need Pre-July 2018 firmware and gives blue underlined hyperlink for Oreo US998 KDZ.

When you go to that page, see what's see the top?

Then IN the KDZ post itself are extensive instructions on how to install Dev Patched LG up as well as troubleshooting. Did you not see that at all?

First screenshot is from WTF, to blue hyperlink for US998 Oreo thread. The other screenshots are from the US998 Oreo KDZ thread to tell you what to flash and how to do it -- including extensive Dev Patched LGUP instructions.
[LG V30 Questions & Answers] ChazzMatt:
If you are starting out with Pie KDZ and need to downgrade, in the Pie KDZ thread (which has the Dev Patched LGUP you need to downgrade from) the Downgrade post also says what you need.

https://xdaforums.com/showpost.php?p=79971595&postcount=3

This is the one point that may not be clear in the WTF Instructions. IF you have US998 AND it's already on Pie. Then you need the Dev Patched LGUP in the Pie KDZ thread, to be able to downgrade from Pie. Most US998 users are not already on Pie KDZ when they come here.

Also, if your questions are about the WTF Instructions (which hundreds of people have successfully completed), why not ask questions in that thread instead of starting brand new thread?

---------- Post added at 10:25 AM ---------- Previous post was at 09:48 AM ----------

You're very wrong about that. I clearly tell how to downgrade from back to pre-July Oreo if you follow the proper links for your variant. People do this every day!

Almost every one who has ever unlocked their bootloader for V30 has used this method (except for T-mobile H932) and most people have done it AFTER July 2018 when LG/Google patched the exploit. You either:

* aren't reading the instructions in a web browser (and didn't print them out to use a check list)

* or not reading carefully,

* or don't understand you are supposed to follow the links for your variant, then come back after finishing that step?

To get out of your boot loop, try Master Reset. It's mentioned in the Dev Patched LGUP Installation Guide Trouble Shooting Tips.
[LG V30 Questions & Answers] TheDannemand:
ChazzMatt already answered exhaustively. I would add/restate just a few things:

1) The Master Reset (Button Dance) may be all you need to get your phone back to normal after cross-flashing:

Power off your phone

Hold VolDown + Power.

When the LG logo appears, immediately release Power (and ONLY Power) and then immediately hold Power again until you get the the factory reset screen.

You never let go of VolDown until the factory reset screen appears. Once it appears, you can release both buttons.

Choose yes twice by using the VolDown key and Power to select.

You MUST start with the phone turned off. Make sure the USB cable is unplugged. If you cannot turn off the phone then hold VolDown+Power for 8 seconds. WAIT and see that it turns off and stays off, otherwise try VolDown+Power again. ONCE your phone is turned off, THEN perform the Button Dance to Master Reset.

2) Assuming Master Reset completes, you should be able to use LGUP to flash what you want. If it doesn't work, you're either using the wrong version, it wasn't installed correctly, or you need to try a different USB cable, different USB port, or even a different computer.

3) We still don't know what your original V30 model is and which firmware version you were on. If you were ever on Pie, you need to use the latest Dual-mode LGUP from the Pie KDZ thread. If you've never been on Pie, you can use the earlier version from the Oreo thread. Chazz already wrote that, just restating.

4) Follow ChazzMatt's gudies to a T. They can be somewhat verbose, but for a reason. Don't skip anything, don't glance over anything, and don't selectively combine with other YouTube or Reddit guides (which are usually outdated clones of Chazz's guides). Just read it and do exactly what it says.

Good luck :)
[LG V30 Questions & Answers] ohmmmmmmm:
Follow the blue hyperlink, "Download either US998 Oreo KDZ or...", and it goes to a page where you can download US99820h_00_0318.KDZ, or, under the heading "TWRP Flashable version", the same file. Hence, I tried flashing that. If the instruction and hyperlink said, Download US99820AorB_somethingsomething.KDZ, unlock bootloader, THEN flash US99820h_00_0318.KDZ, it'd make sense. Currently, following the instructions leads a person to download US99820h_00_0318.KDZ in step 3, then there's nothing more mentioning doing anything before or after that, or how to flash it. If you edit step 3 to say, if you're not yet bootloader unlocked, download and flash US99820A_somethingsomething.KDZ. If you're already bootloader unlocked, download and flash US99820h_00_0318.KDZ, then I wouldn't be in the predicament I'm in trying to follow the guide. If the page linked to listed the KDZs in alphabetical order, it'd make a lot more sense. From what I understand now, it seems that the vast majority of people need to flash A first, do something, and then later flash H. That's really not clear. If A came first on the KDZlinks page, I would still have scrolled down to H, because the steps on the WTF guide say explicitly to download the H KDZ in step 3. Maybe under step 3: prep there should be a step 4 inserted before the current step 4 (download H KDZ) that says download A KDZ, flash it, do some other stuff, make sure your bootloader is unlocked by following these steps...

something like

4. If bootloader isn't unlocked, follow this thread.

5. Download either US998 Oreo US99820h_00_0318.KDZ or Euro...
[LG V30 Questions & Answers] ohmmmmmmm:
So thank you, for actually attempting to help. I'm stuck in a boot loop of black screen > LG V30+ Thinq logo, animated LG logo > static LG logo splash screen > (sometimes) Android is starting loading bar

One time, by doing the power release/repress on the second LG logo (animated), I saw a grey menu for an instant that immediately left again in a flash. This gives me hope.

I can't turn it off, it just boot loops for about an hour (I've never watched it until it stops, but a long time) or until battery dies. Holding VolDown + Power for 8 seconds does nothing, or sometimes, it makes it just keep going through the first 2 steps of the boot loop only: (quick) black screen > LG V30+ Thinq logo. It will never turn off and stay off (except on its own after a really big number of loops, or by the battery running out). As soon as it gets enough charge to run, it starts boot looping on its own, so I can't reliably "turn it off" completely in that way, because I don't control when it turns back on. Holding VolDown + Power seems to not power it off, but to force reset, (power off and restart the boot loop).

Can you please specify "the Pie KDZ thread" with a link? I don't want to go astray again. I was on some version of firmware that'd be with Android 9. I took a picture of the software info page to help me put it back to its original state if something went wrong, but there's nothing about firmware in the screenshot. Android 9, patch level Aug 2019, Baseband version... kernel version... build number, software version. Whatever firmware is most likely to go along with that, but I don't know.
[LG V30 Questions & Answers] ChazzMatt:
At the very TOP of that thread in huge red letters it says only us 20a or 20b for bootloader unlock. Don't tell me you skipped down to 20h without seeing the huge red letters. :p Take a look at that screenshot.

In the LGUP installation guide (same post) it also says to use 20a or 20b for bootloader unlock.
[LG V30 Questions & Answers] ChazzMatt:
Why should they be in alphabetical order? That makes no sense.

They are in chronological order, newest at top, oldest at bottom. Most people want the newest. They only reason you need the older is ONE time for bootloader unlock. After that you always want the newest to update.

But several places -- like top of the thread -- it CLEARLY STATES what you need. You aren't reading.
[LG V30 Questions & Answers] ChazzMatt:
Then I think you didn't follow the installation instructions. Uninstall any prior version because at this point, don't know what all may be conflicting.

INSTALL DEV PATCHED LGUP

1. Extract LGUP_DualMode.zip to a folder on your PC.

2. Browse into the folder and launch LGUP_Store_Frame_Ver_1_14_3.msi.

Follow the prompts to complete the install.

3. In that folder, right click and select "Run as Administrator" on "SetDev.bat" to set LGUP to developer mode

4. Launch LGUP using the desktop shortcut.

Choose Process : PARTITION DL or REFURBISH

I would reboot the computer also after installing.
[LG V30 Questions & Answers] ChazzMatt:
I do say that. I say you need pre-July 2018 firmware, for the WTF booloader unlock exploit. I send people to their respective Oreo KDZ threads to get that, and AT THE TOP OF THOSE THREADS -- IN BIG RED LETTERS -- I tell them exactly what they need to flash for bootloader unlock. It's NOT 20a or 20b for every variant. It's 20a or 20b for US998. I can't list 30 different KDZ in the WTF thread itself. That is what the KDZ threads are for. For EU H930 it's 20R and 20Y.

I list what each variant needs for bootloader unlock in HUGE RED LETTERS in the Oreo KDZ thread for that variant.

Tell me why you can't read this, in the screenshot? If you don't see huge red letters then something is wrong.
[LG V30 Questions & Answers] ChazzMatt:
It almost sounds like you were on some other variant like AT&T H931 or Canada H933 and didn't Frankenstein first before flashing US998 20h.

This is WTF Section 2. For North American variants, if you don't have native US998 then you need to use Frankenstein instructions to convert to North American variants. See attached screenshot. This means flashing US998 Nougat FIRST. It is needed before using WTF INSTRUCTIONS.

IF your have some North American variant which is not native US998, you will get endless bootloops UNTIL you get into Download mode and flash US998 Nougat. Then you do Master Reset, and it stops the bootloops. Then you update back to US998 20a or 20b for bootloader unlock.

Whereas Master Reset will NOT stop the bootloops if you flashed straight to Oreo. This is why Frankenstein link is given in the WTF instructions, to safely convert to US998 firmware for bootloader unlock and root.
[LG V30 Questions & Answers] TheDannemand:
It's the US998 Stock Pie KDZ thread in the ROM section. You can find it there. Pie means Android 9, whereas Oreo means Android 8. It sounds like you were on Pie, so you HAVE to use the LGUP in that thread.

I am guessing the corruption occurred because you used LGUP Upgrade mode to downgrade from Pie to Oreo (not having Partition DL mode due to wrong or incorrectly installed LGUP). Instead of wiping the data partition, this left it completely messed up for the new (downgraded) ROM, and possibly other partitions too. If you also cross-flashed from a different model that would have made things even worse. We still don't know which model you have (i.e. the original firmware): Was it a Sprint LS998, an AT&T H931, a Verizon VS997, a Canadian H933, a European H930 -- or something else?

But none of that matters now if you cannot get the phone to stop boot-looping, or even turn it off. You need to complete that Master Reset. Did you make sure to unplug the cable before attempting to turn it off? Otherwise you may see exactly that problem where it comes back on by itself.

I suggest to leave it plugged in to the wall charger for a couple hours to make sure it's charged, then unplug. After that, keep trying to turn it off with VolDown+Power for 8 secs. If you still can't, then keep trying the Button Dance: Hold VolDown + Power. The moment you see the V30 Thinq logo you quickly toggle the Power button: Let it go, then IMMEDIATELY press and hold Power again. Never let go of VolDown until you see the reset screen. If it doesn't work, let go of all buttons and try again, and again, and again.

Worst come to it, you can buy another V30+ in excellent condition for $110 from YYwireless on eBay.

[MENTION=3250376]ChazzMatt[/MENTION]: I seem to recall a thread in the last couple months where a member posted alternative steps to work around a boot loop or semi-brick, but I am unable to find it. Does that ring a bell?

Edit: Oh, as Chazz wrote: If you cross flashed straight from Pie to Oreo, you won't be able to stop boot loop, even with Master Reset. You have to go via Nougat. But until you manage to turn off the phone, you won't be able to enter Download mode. Again, good luck :fingers-crossed:
[LG V30 Questions & Answers] ChazzMatt:
Recovery Tips link at the very top of the US998 PIE KDZ thread.

Here's the specific post it links to:

https://xdaforums.com/showpost.php?p=81728547&postcount=641

It gives the way to restore Download mode.
[LG V30 Questions & Answers] TheDannemand:
Yep, thank you. But I wasn't thinking of the one on restoring Download Mode, which is moot until the OP can turn off their phone (although it may be relevant next). I was thinking of [MENTION=2129545]AsItLies[/MENTION]'s thread about turning off the phone.

You are indeed the great custodian of all things V30!
[LG V30 Questions & Answers] ChazzMatt:
That post I linked has [MENTION=2129545]AsItLies[/MENTION]'s method quoted as well as someone else who explains it to noobs.

As well as re-gaining Download mode.

It's a comprehensive Recovery Post.
[LG V30 Questions & Answers] TheDannemand:
Yes, yes I know. It's great! I used your post to find AsItLies's thread again, having forgotten who and when and where.

Hopefully this can help the OP turn off the phone and either perform a Master Reset (which may or may not solve the boot loop, depending on whether they cross flashed) OR get into Download mode and flash again with the right LGUP.

And if indeed Download mode is gone, your post can also help restore it (although that's more involved).
[LG V30 Questions & Answers] ohmmmmmmm:
I'm able to get to IMEI/MEID page by holding all 3 buttons. I can't turn off the phone from there. It says to press power to restart phone on that screen, which takes me back into bootloop.

I'll try the connect to PC and try to get to download mode option mentioned and see if that works.
[LG V30 Questions & Answers] ChazzMatt:
You're totally wrong. For the TWRP-flashable zips you HAVE to flash E, F, G, then H. You can't jump straight to H. There were too many changes.

If you READ the US998 Oreo KDZ post #1, you would know this.

I'm on rooted 20h with Magisk mods -- as are a lot of other people. Why wouldn't people want US998 20h? It's the best US998 V30 LG stock firmware released.

Sorry, I'm not helping you any more. You just aren't reading what's already written.

You still won't tell us what your original North American variant was before messing up your phone with 20H. But it's apparent you didn't read WTF Section 2, where it states you should Frankenstein your phone to US998. You have to go to US998 Nougat first, before Oreo if you don't have native US998.

I didn't bother reading anything past when you said no one would need the neccesary 20E, F, G, then H.

Almost everyone who has rooted this phone used my guide. You just aren't bothering to read. You are ignoring BOLD RED LETTER warnings, and somehow it's my fault?

---------- Post added at 02:19 AM ---------- Previous post was at 02:13 AM ----------

There's no mention of WHICH LGUP because

1) some people don't need it whatsoever

2) it's best discussed IN the KDZ threads or Frankenstein instructions. Which is where I have Dev Patched LGUP installation guides you ignored. If you didn't have Partition DL, you didn't read the installation instructions correctly.

If you had Frankenstein'ed your phone like you should have, you would have had the right Dev Patched LGUP instructions right in front of your face. You would have gone to US998998 Nougat, then Oreo 20a or 20b for Bootloader Unlock and TWRP custom recovery installation.

3) different Dev Patched LGUP for different needs. T-Mobile users need to use BOTH Dev Patched LGUP I have posted.

---------- Post added at 02:22 AM ---------- Previous post was at 02:19 AM ----------

You help him. I'm done.
[LG V30 Questions & Answers] TheDannemand:
No I'm done too. What a jerk!