yashsingh1/xdaforums huggingface dataset:
[LG V30 Guides, News, & Discussion] ChazzMatt:
You are welcome!

The "permanent" changes are that if you wish to revert back to Oreo some sensors like camera and flashlight don't work correctly. People had to enable SE Linus permissive enforcing policy and they would work.

Even just TRYING to flash Pie (even if not successful) will make those changes.

Since I posted that warning, some have found that by either Refurbish or Partition DL (ALL partitions) flashing US998 Nougat KDZ, then going back to US998 last Oreo KDZ that often flushes the residual effects of the Pie KDZ. Often, but not all the time. However, that means you would need to then reinstall TWRP when back on last Oreo KDZ.

You would to flash US998 Nougat KDZ (doesn't matter which one) and then last Oreo 20h US998 KDZ, then follow Section 6 of the WTF Instructions to reinstall TWRP again and root. That of course includes re-flashing the encryption disabler and root checker disabler files.

Maybe not permanent if you flush with Nougat KDZ then come back to last Oreo KDZ. But even that doesn't work for everyone and they still end up having to always run permissive.

We have many people now showing up with Pie already installed so they have no other choice than to try that if they wish to revert to Oreo.

Having said all that, the Android 10 LOS-17 ROMs (which require LG Pie blobs/drivers) have greatly improved over the past few months. Initially people installed LS Pie just to try the Android 10 ROMs, found they had more bugs than LOS-16 ROMs and rushed back to rooted stock Oreo and/or LOS-16 ROMs (which require stock Oreo blobs/drivers).

Or they tried to flash this wonky US998 Pie KDZ, weren't successful -- got stuck on bootloop -- managed to re-flash Oreo...

And found stuff was "broken". Thus the warnings.

After that, we discovered the Nougat workaround which helps many and many of the LOS-17 bugs was quashed. But [MENTION=2022267]ShapeShifter499[/MENTION] has also continued work on LOS-16 as well.

Also we figured out several workarounds to complete the Pie installation for those stuck on logo bootloop. See top of post #2 and all of post #6.
[LG V30 Guides, News, & Discussion] Tricyclthief:
Hey all, having a little issue with my v30 us998. I've been using my phone for the last couple years on cricket (at&t) with pretty great signal in my area. My job has me working now and than in an area where i have no coverage and found out cricket has wifi calling/texting locked out unless i have an iphone or buy one of their phones, so i switched to Mint Mobile (tmobile) as their coverage map as identical or better and they swore wifi calling is enabled.

Switched carriers and my signal strength is horrible on the phone. I checked bands and only missing band 71 which i'm told isn't huge deal as it's mostly 2, 66 around here which i have. Wifi calling is working great, though i'm not able to access the setting in pie, when i click wifi calling the setting app crashes and reverts to previous page. I thought maybe it was pie so i reverted back to oreo and could access wifi calling settings and that all worked but still crap signal. Setup their apn, wiped phone a few times, went back to pie as wifi calling is still working just cant get into the setting but nothing helps the signal. It's always showing 1-2 bars, when driving around town it will jump up to like 4-5 bars for a second and then back to 1-2. It shows 4g LTE on top bar.

Thoughts on what i can do to try and fix/improve this short of buying an H932/new phone?
[LG V30 Guides, News, & Discussion] Ascii3:
I still have not yet ever installed the Pie firmware and it seems like it might not be worth doing quite yet.

The LGUP software might have logic to avoid replacing things in various modes (the notable exception might be ChipErase, but that mode has other complications). The US998 (and LG tablet devices generally) device Version Info using that displays using the LG Hidden Menu (Dial *#LGMENU#*XXX# Where "XXX" are the last three digits of the Model code, then at HiddenMenu SVC Menu --> Version Info), has separate values for "Factory Version", "SW Original Version", and "SW Version Info". There is also an entry for "SEPolicy Version". Perhaps LGUP uses the various items to selectively flash firmware parts. I would imaging that the "Factory Version" and "SW Original Version" items from devices that were not originally US998 devices and were converted to US998 via LGUP would differ from original US998 devices converted to US998.

Maybe a Factory Reset using the LG stock ROM hidden Menu (Dial *#LGMENU#*XXX# Where "XXX" are the last three digits of the Model code, then at HiddenMenu SVC Menu --> Factory Reset (R&D Only) --> Factory Reset) can yield better results than a simple /data and /cache wipes after flashing.

It has been confirmed via multiple sources that flashing a KDZ file via LGUP using the REFURBISH or UPGRADE options and intending a downgrade does not always yield in everything correct after a flash. I have also seen evidence that flashing some KDZ file to upgrade fails to yield that everything be correct after a flash when they are flashed are skipping at some version updates. It may seem like KDZ containers are intended to be a single file package to change firmware as upgrade, downgrade, or conversion, but they do not actually behave that way, at least when flashed using LGUP Refurbish or UPGRADE modes. My experience and from what I can tell is that updating versions incrementally provides the best firmware install results. This is often not very convenient, but may result in things working properly. I would think that flashing earliest good KDZ in the REFURBISH mode followed by flashing each greater version in ascending order incrementally in either UPGRADE (for KDZ files) or FOTA Upgrade (for UP or ZIP files) modes, and followed by a Factory Reset, is least likely to result in quirks.
[LG V30 Guides, News, & Discussion] ChazzMatt:
The only time we had to use incremental updates was with the latter Oreo (20e, 20f, 20g, 20h) Dev created TWRP flashable zips (Dev stock ROMs). For KDZ using Refurbish or especially Partition DL (all partitions) KDZ full image flashed fine via Dev Patched LGUP. For two different phones I've gone straight from Nougat to 20h Oreo on one and Nougat to US998 Pie on the other, using just KDZ.

Refurbish in KDZ wipes everything and clean installs the image. Partition DL (especially for already cross converted models) is even more powerful. We found the Canadian H933 needs Partition DL at both the US998 Nougat stage and then again for early US998 Oreo for bootloader unlock.

Your KDZ experience is with other LG phones and I can't speak to that. For instance, the LG V35 series acts totally differently than the V30 when cross flashing KDZ. On V30, cross flashing other North American variants like Sprint LS998 or AT&T H931 to US998 (Open Market or even U.S. Cellular) will carrier unlock the phone. On V35, cross flashing to U.S. Open Market firmware will NOT carrier unlock the phone. I was embarrassed when I suggested that in the V35 forum, because it worked on the V30. :rolleyes:

Similarly, early on we had a bunch of people come in here and say "On the V20 we did blah blah". Well this is NOT a V20.

My extensive experience -- since 2017 -- is with the V30 variants and while some other LG phone series will act similar, some won't. ;)
[LG V30 Guides, News, & Discussion] Ascii3:
I have not yet tried PARTITION DL. My impression is that PARTITION DL might only flash partitions that already exist on the target device. When performing a product conversion via firmware flash, I would think it possible that the partition sets between the original model and the target model could be different (some partitions might not exist on different models) and then flashing a target model's KDZ via PARTITION DL might result in some partitions not being flashed. What is your experience regarding this?

Yes, depending on how network locks are implemented, flashing to a different firmware can result in a network lock no longer being present or present but no longer being enforced.

For LG V30 devices that were originally Sprint LS998 or AT&T H931 and then were converted to US998 via LGUP cross-flash, does cross-flashing back to Sprint LS998 or AT&T H931 result in the network locks being present and enforced again?
[LG V30 Guides, News, & Discussion] TheDannemand:
My understanding is exactly the opposite: LGUP Refurbish assumes you're refurbishing a phone of the same model (same KDZ) and doesn't allow for changes in the partition table. Partition DL on the other hand clearly allows for KDZ's with different partition tables and will prompt you about this before flashing.

Cross-flashing between H933 and US998 is a good example of that. It has been known to cure sick devices: Partition DL to H933, then back to US998. Partition DL to US998 Nougat has been known to do a similar job.

On the subject of different wipes/factory resets, I believe there are subtle differences which can be significant:

1) Factory wipe in TWRP is the lightest, both because it only touches the Data partition (not modem or other persistent data) and because it allows you to preserve internal storage (unless you do a full Data format in TWRP).

2) Factory Reset from the Android settings menu evidently does more, in that it removes the user account so as to avoid FRP. I have a sense it also resets other persistent data which can only be done by the OS and/or version specific drivers (see below).

3) Master Reset through the Button Dance evidently doesn't remove the user account/FRP. But maybe it does other things that OS Factory Reset doesn't do. I don't think we can know for sure.

4) The R&D Only Factory Reset in the Hidden menu definitely wipes something which other wipes don't: I have used it on a carrier unlocked H932 which didn't want to do LTE on AT&T after coming back from LG repair. That was after almost 2 weeks with multiple levels of TMO support and performing every other type of wipe and reset. R&D Only Factory Reset solved it.

OTOH after flashing a US998 (converted LS998) back from Pie to Oreo (via Partition DL Nougat KDZ as described above) I've had persistent radio issues on Oreo which I didn't have on Pie. And no resets, wipes, cross-flashes or refurbish-flashes have been able to cure it, including R&D Only. I have a strong suspicion that if I had performed an OS Factory Reset on Pie BEFORE the rollback, I wouldn't have this problem. Some day I'll upgrade it to Pie again and try it.

On my two US998 phones (both converted from LS998) Factory Version and SW Original Version both reflect the current firmware, not the original model or version: On the phone that is still Pie (as received from eBay seller YYwireless) they both show US99830b_00, and on the one I rolled back to Oreo, they both show US99820h_00.
[LG V30 Guides, News, & Discussion] ChazzMatt:
See this sticky thread I wrote a while back:

H931 & LS998 -- Carrier Unlock and Update to Latest Android Firmware!

https://xdaforums.com/lg-v30/how-to/ls998-h931-how-to-update-t3927155

For AT&T H931 and Sprint LS998 the best way for non-customers to update their phones and carrier unlock them (remember many of these phones are sold internationally) is to convert them to US998 firmware. This completely converts them to US998, with all US998 partitions and even changes to US998 modem. Even gives AT&T H931 the US998 CDMA bands... not that those will be necessary any more, but was useful for Verizon and Sprint customers who perhaps bought some other North American V30 phone.

In a related topic, to bootloader unlock most of the North American variants --

* AT&T H931,

* Canada H933,

* regional carriers' AS998,

* Sprint LS998,

* Verizon VS9996,

* Puerto Rico H932PR (not to be confused with T-mobile H932),

* and US998

-- you had to be on early Oreo US998 firmware, at least temporarily, for the necessary fastboot flash commands. It's called

Frankenstein, and FULLY CONVERTS those phones to US998.

After the

WTF (named after an early Oreo exploit) bootloader unlock, and TWRP installation and root

, then you could go back to the more recent carrier firmware via Dev created TWRP flashable zips, if you wished. (See Section 9 of that post. Read in web browser, not an app.) But many just stayed on US998 firmware and just updated to more recent releases. However OTHERS then converted to like Verizon VS996 or to AT&T H931, even if they started out with something completely different -- if they were customers of those carriers and wanted that firmware.

EXAMPLE: Start out with 128GB LS998 V30+. Convert temporarily to US998 for bootloader unlock and root. Then flash Vs996 firmware for Verizon. You now have a 128GB V30 VS996, even though Verizon NEVER sold a 128GB V30+. ;) They only sold the 64GB VS996.

So, FRANKENSTEIN was not just for bootloader unlock, it predated that. It was for FULLY CONVERTING one V30 to another V30. This worked for the North American variants, except for T-mobile H932.

NOTE: T-mobile H932 can NOT be cross converted to any other firmware. Every North American V30 EXCEPT for T-mobile H932 can be fully converted to another North American variant,
[LG V30 Guides, News, & Discussion] ChazzMatt:
What does it say in post #1? ;)
[LG V30 Guides, News, & Discussion] HueyT:
https://www.lg.com/us/mobile-phones/VS980/Userguide/075.html
[LG V30 Guides, News, & Discussion] NeonHD:
Hold both power and volume down button until the screen turns on.

Once you see the boot screen (or bootloader unlocked screen), instantly let go of the power button while still holding vol down, wait one second, then press and hold power button again.

You should instantly be brought to the factory reset option.
[LG V30 Guides, News, & Discussion] EddieV89:
Yeah, that is the problem, it cant. It is stuck on the startup screen, white LG V30thinq, and that is it. When I start hard reseting it with vol down and power button it flinches for a second and then again just comes back. Damn, that was the problem, I have like 2 systems now and it cant start...
[LG V30 Guides, News, & Discussion] Diego1751:
Yeah all kinds of horrible games,weather apps etc
[LG V30 Guides, News, & Discussion] ChazzMatt:
Wow.

Wonder if that's stuff for US Cellular... Because in the past, all USS98 firmware was the same -- and debloated, except for social media apps.

We always just grabbed the first US998 KDZ available, didn't wait for "USA" vs "UC1", "1UC" or whatever. Made no difference with Oreo.
[LG V30 Guides, News, & Discussion] fatboysh:
Update. Phone rings but you can't answer it
[LG V30 Guides, News, & Discussion] MicroMod777:
Any google mirrors to download this kdz?
[LG V30 Guides, News, & Discussion] EddieV89:
So do you know if there is anything possible to do or not? I think I bricked it but maybe there is a way to completely erase data and star anew? Just it is stuck on startup and that is it...
[LG V30 Guides, News, & Discussion] ChazzMatt:
Not yet. When I get home I'm uploading to AFH.
[LG V30 Guides, News, & Discussion] galapagos:
This will take you to download mode. You can try again or go back to Oreo:

https://xdaforums.com/showpost.php?p=80350069&postcount=29
[LG V30 Guides, News, & Discussion] EddieV89:
Ok, thanks a lot!!1 I managed to get to the download mode that way! Now, what do I need to choose when instaling back to Oreo, the Refurbished or Upgrade option?
[LG V30 Guides, News, & Discussion] bhq76:
I have notification new software download is available. My lg v30+ US998 was unlock &root. It ok to update ?
[LG V30 Guides, News, & Discussion] ChazzMatt:
Not if you have TWRP installed.
[LG V30 Guides, News, & Discussion] Yeriorlando:
this is the update i have installed.: -*-->
[LG V30 Guides, News, & Discussion] bhq76:
I must wait pie twrp flashable? Or how to update intruction?
[LG V30 Guides, News, & Discussion] jaysus145:
the same thing happened to me earlier today. If you can get to download mode, just download the Oreo kdz, I used 20h, and flash that and lgup with the upgrade option.
[LG V30 Guides, News, & Discussion] ChazzMatt:
That has nothing to do with this thread

This is official full image KDZ -- not OTA and certainly not beta.
[LG V30 Guides, News, & Discussion] ChazzMatt:
Remember I said I was downloading two copies this morning? I get home and find this:

* One copy is 3,484, 798 KB

md5: 5f3703d2907021485bef119192b7435d

* the other is 3,241, 588 KB

md5: md5: 1abe04d95cf000eca9a78e0ea1df4301

They are both US99830b_00_0902.KDZ, downloaded from the same website, but through two different browsers.

EDIT: THE SMALLER ONE IS GOOD
[LG V30 Guides, News, & Discussion] Tricyclthief:
Hey Chazz, i'm sure it's no but is there anyway to to go from us998 to h932? I was on cricket and now switched to mint and having some signal issues using tmobile towers. Not sure what else to do as i don't really want to buy a new phone.
[LG V30 Guides, News, & Discussion] tech_infinity:
Absolutely NOT

You'll most probably brick your phone if you try :cowboy:
[LG V30 Guides, News, & Discussion] ChazzMatt:
Sorry, no. Can't cross flash modems from any other V30 variant to or from T-Mobile H932. Different RSA encryption.

Best bet would be to somehow switch back back to AT&T towers.

As suggested above there are very inexpensive AT&T MVNOs like Red Pocket
[LG V30 Guides, News, & Discussion] Tricyclthief:
Bummer i figured. Yeah the problem is i get great signal on at&t but no wifi calling, why i ended up switching to Mint. Thanks, i'll just stick it out for now and see if i can't pickup a cheap h932 and sell mine off or something.
[LG V30 Guides, News, & Discussion] TheDannemand:
There is no guarantee that a H932 will get significantly better reception. The only way would be if B71 is widely deployed in your area -- which is far from the case everywhere.

I wish you would read the post I wrote to you as that explains your options better.

Edit: Another option:

4) If you flash the ATT H931 ROM your US998 will get both VoLTE and VoWiFi (WiFi calling) on ATT, assuming your MVNO provides it (again Red Pocket does, maybe Cricket and others too). So if ATT has better coverage in your area, you can get the best of both worlds. Unfortunately that ROM was never updated to the latest Oreo, let alone to Pie. Still, I would consider it if VoWiFi on ATT was important to me.
[LG V30 Guides, News, & Discussion] Ashtrix:
Hello Chazz, been quite a long time since I visited back It's been a tough ride..

Sorry if this is slight OT here seemed like a good thread to discuss about the Pie -> Oreo rollback and issues.

The phone is rock stable, I only disabled some things from Ti Backup and Uninstalled some Gbloat and etc (Carrier Services disabled, esp no I don't want the RCS !!) I was just thinking, if I send the phone to repair for an official battery replacement, will they lock the bootloader and update the device to Pie 30b ? I was just thinking of that option not that battery is degraded heavily I get a fair amount of SOT with charging from 30-80%, but even with Qnovo and super efficient SD835 I think the time will eventually come to it's demise so if I get a new phone which has SD slot, No notch, 3.5mm jack sadly no DAC (Sony is the only option, as LG BL unlock is complete garbage nowadays sadly and with LG Wing removing the 3.5mm jack ....).

And also [MENTION=832590]TheDannemand[/MENTION] I see you mention about a phone repair, H932 though, maybe you can please chime in your thoughts as well, thank you.

Thanks in advance and Happy Thanksgiving to all of V30 family :cowboy: !

Also very happy to see all of the folks are doing good..cheers !
[LG V30 Guides, News, & Discussion] ChazzMatt:
Hello!

If you haven't done it yet (you've been away for awhile), go here and flash this:

LG V30 Unlocked Bootloader Warning Disabler

https://xdaforums.com/lg-v30/themes/lg-v30-unlocked-bootloader-warning-t4161743

It will hide the unlocked bootloader unlock warning. Entirely possible if you send in your LG phone for BATTERY REPLACEMENT, they may not even notice bootloader is unlocked. Therefore they may not be prompted to "fix" that issue and/or install US998 30b.

I don't know if it's standard operating procedure to for LG technicians to install latest firmware if it's not already installed. They may just replace the battery and send it back.

For next phone I'm seriously looking at Samsung Galaxy S10/S10+. Last Samsung phone with headset. Stereo speakers. 8GB RAM. Here's comparison with your V30S in the middle:

https://www.gsmarena.com/compare.php3?idPhone1=9535&idPhone2=9090&idPhone3=9536

I already have a mint 64GB V35 for my wife, sitting in a drawer. She has 64GB US998 V30, but I have V30+ and need more internal memory.
[LG V30 Guides, News, & Discussion] ldeveraux:
Is there a legit BL unlock for either the S10 or the S10+ though? Not that I want to flash ROMs or anything, but debloated stock is really what I'm after. I kinda saw TWRP for the S10, but it wasn't clear.
[LG V30 Guides, News, & Discussion] ChazzMatt:
Not for U.S. carrier phones, last time I checked. The Hong Kong S10/S10+ uses Snapdragon (not Exynos), just like U.S. phones and have simple OEM bootloader unlock. And TWRP, etc. But I think I need U.S. model for AT&T VoLTE.

https://xdaforums.com/galaxy-s10/how-to/s10-g9730-tgy-hong-kong-variant-t3915196

I THINK there was an Engineering kernel you could flash on U.S. models for root, but it limits battery charging to 80%? And I don't think you can install TWRP. But maybe that was for Galaxy S9?

I haven't checked in a while.

But by February 2022 I need phone that will give me AT&T VoLTE. And there's not any phones with specs I need and root. I'm not getting a Pixel.

The Exynos S10 versions can be bootloader unlocked and rooted, but for VoLTE reasons those are useless for me.
[LG V30 Guides, News, & Discussion] TheDannemand:
Hey buddy!

Yes, I sent in my H932 for repair TWICE. Both times I requested that the phone NOT be updated, and both times the LG rep I spoke to made clear that they could not guarantee that, and we had to assume that the phone would be upgraded to the latest firmware. They do that standard.

Indeed, the phone was updated after coming back the first time (to latest Oreo at the time). The second time they sent a replacement phone which was of course updated as well.

My primary phone is now a US998, converted from LS998 to US99830b Pie by eBay seller YYwireless. I rolled it back to US99820h Oreo using LGUP Partition DL via Nougat. The process went smoothly, and I have not seen any issues that I attribute to the rollback. But I have not used custom ROMs on it either, so I cannot say if I would need Permissive like others have reported.

The one issue I have (modem being reluctant to make LTE connection) I don't think was caused by the rollback, since I have been able to make it go away on Nougat and on H931 ROM -- but in both cases it came back on US99820h. So probably a combination of 20h and my particular phone.

I have a second US998 from YYwireless which is still on Pie. I use that as backup phone and am about to use it more actively (as a music source to feed a USB DAC, remote controlled by my primary). I must say I have not had any issues on that phone either, and am not seeing any reasons to risk rolling it back. I mention this for perspective.

Happy Thanksgiving to you as well. And to everybody in this community! :)
[LG V30 Guides, News, & Discussion] ChazzMatt:
Researching more, I think that "Galaxy S10 Ultra" $150 bootloader unlock fee from someone who remotes in through your computer also works for the Galaxy S10/S10+. While looking around the S10+ forum I see you posted in the TWRP thread, where it was alluded to but not specifically described.

I think you get a PM for a link. It's probably talked about more in their Telegram group.
[LG V30 Guides, News, & Discussion] ldeveraux:
I'm calling it bunk. I don't care how well it works, there's 0% chance I'm opening up my PC (even temporarily, while I'm there, watching) for someone to unlock my phone. Not happening.