V30 Korean variant gone wrong - LG V30 Questions & Answers

Good day everyone, I'm new here so i hope i'm posting this right
This month i got an LG V30 V300S (korean variant), it was supposed to be H930 but they sent me this one instead, it didn't bother me much at first since the phone supports my country's frequency and XDA still supports the korean variant V30s, and I can't return the item too cuz of pandemic.
I came from the LG V20 so I'm quite familiar about cross flashing, but even before that i still did a little reading regarding on unlocking and rooting the phone on the V30 XDA thread (kind of easier than the V20 tbh).
The first thing i did was unlock and root the phone, installed TWRP and installed V300S firmware
(Based from here: https://forum.xda-developers.com/lg-v30/how-to/korean-variant-bootloader-unlock-root-t3804505)
It was ok at first, but now i decided to cross flash to US998 30b (Pie) via TWRP because V300 firmware is full of bloatware , and i stayed there for a few days.
Now i was wondering of installing Custom ROMs on the phone, it was a messy thing for me to understand, but as far as i knew since i want to install Android 10 based roms (Havoc OS), i needed Stock pie blobs.... Unfortunately it didn't work, i ended up in a bootloop, so i went back to US998 30b again.
After a while, i wondered that maybe the whole crossflashing is wrong? So i backed up the phone and flashed an H930 31a instead, but has no signal
Previously i can just easily bring back the modem using backed up V300S modem via LGUP or TWRP, but this time it didn't work, i also picked an older version (H930 30q) to match my phone's modem version, still no avail
And even disregarding the signal, i attempted to flash the custom rom again... Still bootloop
So I gave up at this point, and decided to go back to US998 30b, but this time i can't go back to US998 anymore, it also bootloops
I don't know what i did wrong now, i just followed the same instructions.
V300s > H930 > unlock > TWRP > US998 (TWRP)
Only difference on this one is i no longer flashed V300 kdz cuz i don't have one
So now I'm stuck at V300s_21e_Oreo cuz it's the only ROM that worked
I know I'm doing something wrong here, but due to a lot of procedures i have done I don't know where to start anymore, the phone is fully working with signal right now, but it lags on this ROM, US998 30b was way snappier
Sorry for the long post, I'm just desperate
Any help or suggestions will do.

Update: managed to go back to US998 Stock pie (30b) no idea how, 4G is painfully slow but i guess this will do for now

Related

How to update unlocked AT&T V30 now on T-Mobile

Hi everyone,
A couple months ago I switched over to T-Mobile. I bought my V30 from AT&T and got it unlocked after switching to T-Mobile.
Apparently Android Oreo 8.0 is rolling out to AT&T V30s but when I check for updates no updates are available. Is there any way I can get my phone to update now that I'm on T-Mobile?
Thanks
SuhasTheBest said:
Hi everyone,
A couple months ago I switched over to T-Mobile. I bought my V30 from AT&T and got it unlocked after switching to T-Mobile.
Apparently Android Oreo 8.0 is rolling out to AT&T V30s but when I check for updates no updates are available. Is there any way I can get my phone to update now that I'm on T-Mobile?
Thanks
Click to expand...
Click to collapse
If you can get your hands on an active att sim card, or from one of its MVNOs. That is how I updated my lg gpad. I put an h2o sim card and the next day the nougat update was already loaded. Other than that all I can think of is flashing the firmware.
poncespr said:
If you can get your hands on an active att sim card, or from one of its MVNOs. That is how I updated my lg gpad. I put an h2o sim card and the next day the nougat update was already loaded. Other than that all I can think of is flashing the firmware.
Click to expand...
Click to collapse
Thanks! I'll try my friend's ATT sim later today.
poncespr said:
If you can get your hands on an active att sim card, or from one of its MVNOs. That is how I updated my lg gpad. I put an h2o sim card and the next day the nougat update was already loaded. Other than that all I can think of is flashing the firmware.
Click to expand...
Click to collapse
Thanks! I'll try my friend's ATT sim later today.
I had an AT&T sim in my LG-H931 (that is unlocked and has been running on T-Mo since I got it) for about an hour on Saturday with no luck. For what it is worth, I am still on the September security patch, so at the very least I would have expected to see an update to that right away.
I may be unhappily stuck on 7.1.2 unless someone else figures out a trick.
SuhasTheBest said:
Thanks! I'll try my friend's ATT sim later today.
Click to expand...
Click to collapse
Any luck?
I'm in the same boat, a firmware file that we could flash though bridge would probably fix it, but I haven't found any firmware files for the H931 Oreo anywhere =/
Update?
Any update with this? I am on the same boat. I bought unlocked V30 from attached and use it with MetroPCS..
I bought ATT prepaid card hoping that it will prompt the update with no luck so far.
Considering flashing but like previous poster said , I could not find update file for H931 ATT oreo.
Switching from Apple btw and I wish I did it a long time ago, love it!
Jkho89 said:
Any update with this? I am on the same boat. I bought unlocked V30 from attached and use it with MetroPCS..
I bought ATT prepaid card hoping that it will prompt the update with no luck so far.
Considering flashing but like previous poster said , I could not find update file for H931 ATT oreo.
Switching from Apple btw and I wish I did it a long time ago, love it!
Click to expand...
Click to collapse
There's long been an "update" with this. You convert the H931 to open market US998 and flash the latest KDZ. See the Frankenstein thread. I post latest US998 KDZ whenever they are released.
https://forum.xda-developers.com/lg-v30/how-to/using-lgup-crossflashing-t3780969
AT&T, along with Sprint, won't release KDZ and won't give updates to non-customers. So, best to convert phone to variant that receives public KDZ.
ChazzMatt said:
There's long been an "update" with this. You convert the H931 to open market US998 and flash the latest KDZ. See the Frankenstein thread. I post latest US998 KDZ whenever they are released.
https://forum.xda-developers.com/lg-v30/how-to/using-lgup-crossflashing-t3780969
AT&T, along with Sprint, won't release KDZ and won't give updates to non-customers. So, best to convert phone to variant that receives public KDZ.
Click to expand...
Click to collapse
Oh wow, that made total sense. Thank you for guiding me to the right post, I am really new with this.
ChazzMatt said:
There's long been an "update" with this. You convert the H931 to open market US998 and flash the latest KDZ. See the Frankenstein thread. I post latest US998 KDZ whenever they are released.
https://forum.xda-developers.com/lg-v30/how-to/using-lgup-crossflashing-t3780969
AT&T, along with Sprint, won't release KDZ and won't give updates to non-customers. So, best to convert phone to variant that receives public KDZ.
Click to expand...
Click to collapse
Sorry Chaz, I hope it is okay for me to post it here. I noticed your name on most LG V30 posts and I know you are probably the best person to ask. First of all I wanted to thank you for providing the instruction for the flashing. I really thought I bricked my phone for a couple times. Here is what I did:
1. Wrongfully ran the flashing not in donwload mode - was not able to turn on the phone.
2. Panicked, followed instruction to master reset.
3. I went back to download mode, Flash US998 Nougat.
4. For some reason it could not go pass the setup (keep restarting).
5. Went to Download Mode - Flash Upgrade to Oreo US988. Stable.
6. I think I was successful as I was able to restore my data and the phone works.
One question..probably a stupid one as I am new android user, but I noticed the User Interface is really different , I believe this is what they referred as a "stock" Oreo? It is useable but the UI is really basic. See the attached link:
[url]https://photos.app.goo.gl/h3eeBdoGTtHRM6Y4A[/URL]
[url]https://photos.app.goo.gl/S1PiJQR3XcYn9cZe7[/URL]
Does this mean I just had my Bootloader unlocked and the phone is now ready to flash different variants with LG UP "update" selection?
I am currently using Metro PCS and was wondering of I can flash Tmobile variant to my phone, not sure if flashing Verizon (CDMA) will cause problem for the network.
Greatly appreciate all suggestions or advice
Jkho89 said:
Sorry Chaz, I hope it is okay for me to post it here. I noticed your name on most LG V30 posts and I know you are probably the best person to ask. First of all I wanted to thank you for providing the instruction for the flashing. I really thought I bricked my phone for a couple times. Here is what I did:
1. Wrongfully ran the flashing not in donwload mode - was not able to turn on the phone.
2. Panicked, followed instruction to master reset.
3. I went back to download mode, Flash US998 Nougat.
4. For some reason it could not go pass the setup (keep restarting).
5. Went to Download Mode - Flash Upgrade to Oreo US988. Stable.
6. I think I was successful as I was able to restore my data and the phone works.
One question..probably a stupid one as I am new android user, but I noticed the User Interface is really different , I believe this is what they referred as a "stock" Oreo? It is useable but the UI is really basic. See the attached link:
https://photos.app.goo.gl/h3eeBdoGTtHRM6Y4A
https://photos.app.goo.gl/S1PiJQR3XcYn9cZe7
Does this mean I just had my Bootloader unlocked and the phone is now ready to flash different variants with LG UP "update" selection?
I am currently using Metro PCS and was wondering of I can flash Tmobile variant to my phone, not sure if flashing Verizon (CDMA) will cause problem for the network.
Greatly appreciate all suggestions or advice
Click to expand...
Click to collapse
You're welcome! You've now successfully Frankensteined your phone to open market US998. Let me try to answer your questions...
As you admitted in step 1, you didn't follow the instructions. But also in step 4 you didn't... Luckily you survived it! Especially in step 4 -- between US998 Nougat and US998 Oreo -- is when you really needed to Master Reset, as that Nougat flash is necessary but very unstable. After Master Reset, then that Nougat is stable and you can continue to flash Oreo.
No, your bootloader is not unlocked, but you are carrier unlocked/SIM card unlocked to use this phone on different carriers.
I'm not sure if you are confusing terminology and are really asking about bootloader unlock? (which is necessary for root) You flashed US998 Oreo 20D, which has the bootloader lock security patch. If you want to unlock bootloader, you would need to temporarily downgrade to Oreo 20A or 20B first and run the instructions in the WTF thread... You could root, then update back to newest firmware after bootloader unlock. I'm only mentioning this because you asked about bootloader unlock.
Right now, you now have the open market, carrier unlocked US998 variant -- the one designed to run on all North American carriers. It will run on T-Mobile/MetroPCS quite fine. Lots of T-Mobile users have US998 on T-Mobile. Not only is there no need to flash T-Mobile variant KDZ, but since T-Mobile KDZ has different RSA encryption than all the other North America V30 variants, you'll definitely brick your phone if you try.
You can use "update" for US998 for future updates or you can use simple "upgrade" with full KDZ in the dev patched LGUP when future US998 KDZ are released. Simple "upgrade" in dev patched LGUP does not wipe your data. You had to wipe your data THIS time because you were converting to another model. Now that you are on US998, you can stay there. In the future you can just use "upgrade" for KDZ if you do not receive update prompts. I prefer flashing full image KDZ myself instead of partial image OTA.
The plain look is just the layout and theme choices you've made. (Go into Settings and search for Home and also Theme. ) Plus there's no carrier bloatware on US998. Also Oreo looks a little different, if you're just upgrading from Nougat.
For myself, I use Nova launcher with an icon theme pack to change the look. It has lots of different choices. I prefer a separate app drawer, and I prefer my app drawer have a black background to clearly differentiate it from my desktop. I like the Nova "cube" transition to go to my different desktop screens.
ChazzMatt said:
You're welcome! You've now successfully Frankensteined your phone to open market US998. Let me try to answer your questions...
As you admitted in step 1, you didn't follow the instructions. But also in step 4 you didn't... Luckily you survived it! Especially in step 4 -- between US998 Nougat and US998 Oreo -- is when you really needed to Master Reset, as that Nougat flash is necessary but very unstable. After Master Reset, then that Nougat is stable and you can continue to flash Oreo.
No, your bootloader is not unlocked, but you are carrier unlocked/SIM card unlocked to use this phone on different carriers.
I'm not sure if you are confusing terminology and are really asking about bootloader unlock? (which is necessary for root) You flashed US998 Oreo 20D, which has the bootloader lock security patch. If you want to unlock bootloader, you would need to temporarily downgrade to Oreo 20A or 20B first and run the instructions in the WTF thread... You could root, then update back to newest firmware after bootloader unlock. I'm only mentioning this because you asked about bootloader unlock.
Right now, you now have the open market, carrier unlocked US998 variant -- the one designed to run on all North American carriers. It will run on T-Mobile/MetroPCS quite fine. Lots of T-Mobile users have US998 on T-Mobile. Not only is there no need to flash T-Mobile variant KDZ, but since T-Mobile KDZ has different RSA encryption than all the other North America V30 variants, you'll definitely brick your phone if you try.
You can use "update" for US998 for future updates or you can use simple "upgrade" with full KDZ in the dev patched LGUP when future US998 KDZ are released. Simple "upgrade" in dev patched LGUP does not wipe your data. You had to wipe your data THIS time because you were converting to another model. Now that you are on US998, you can stay there. In the future you can just use "upgrade" for KDZ if you do not receive update prompts. I prefer flashing full image KDZ myself instead of partial image OTA.
The plain look is just the layout and theme choices you've made. (Go into Settings and search for Home and also Theme. ) Plus there's no carrier bloatware on US998. Also Oreo looks a little different, if you're just upgrading from Nougat.
For myself, I use Nova launcher with an icon theme pack to change the look. It has lots of different choices. I prefer a separate app drawer, and I prefer my app drawer have a black background to clearly differentiate it from my desktop. I like the Nova "cube" transition to go to my different desktop screens.
Click to expand...
Click to collapse
Appreciate the answers, Chazz.
Ok, I believed I did not do master reset from H931 to US998 Nougat but I did master reset from US998 Nougat to US998 Oreo. Now that you mentioned it, that was probably the reason why I succeeded.
Yes I am pretty sure I mixed up terms as I am probably not 100% with the terminologies, my apologies. Thanks for the warning, will definitely not flash T-Mobile variant.
Good to know that from now on I just have to do upgrade through dev patched LG UP to update US998 kdz.
I think the reason I thought the step was not complete was because in the UI, I was not able to move any app shorcut (and widget) on my screen. It is also not arrangeable. Also when I go to App and touch-hold the app icon, there is no option delete it. Is this normal? I went to try different themes and it did not fix the problem. I youtubed LGV30 Oreo and it looks really different from my current phone.
Couple of screenshots:
Last Page of the main screen, I had to click the "+" sign to add apps. and the app is not move-able.
https://photos.app.goo.gl/BgcRPCrdsaEDx4uX8
Swipe left from the main screen:
https://photos.app.goo.gl/BtMEkyrvv5vfrpQi8
Will Nova Launcher fix this?
Thanks Chazz.
Jkho89 said:
Appreciate the answers, Chazz.
Ok, I believed I did not do master reset from H931 to US998 Nougat but I did master reset from US998 Nougat to US998 Oreo. Now that you mentioned it, that was probably the reason why I succeeded.
Yes I am pretty sure I mixed up terms as I am probably not 100% with the terminologies, my apologies. Thanks for the warning, will definitely not flash T-Mobile variant.
Good to know that from now on I just have to do upgrade through dev patched LG UP to update US998 kdz.
I think the reason I thought the step was not complete was because in the UI, I was not able to move any app shorcut (and widget) on my screen. It is also not arrangeable. Also when I go to App and touch-hold the app icon, there is no option delete it. Is this normal? I went to try different themes and it did not fix the problem. I youtubed LGV30 Oreo and it looks really different from my current phone.
Couple of screenshots:
Last Page of the main screen, I had to click the "+" sign to add apps. and the app is not move-able.
https://photos.app.goo.gl/BgcRPCrdsaEDx4uX8
Swipe left from the main screen:
https://photos.app.goo.gl/BtMEkyrvv5vfrpQi8
Will Nova Launcher fix this?
Thanks Chazz.
Click to expand...
Click to collapse
Try Nova launcher.
If that doesn't fix the problem, do a Master Reset and then use dev patched LGUP and DL PARTITION (choose all partitions) the US998 Oreo KDZ over your phone. You may want to do that anyways...
ChazzMatt said:
Try Nova launcher.
If that doesn't fix the problem, do a Master Reset and then use dev patched LGUP and DL PARTITION (choose all partitions) the US998 Oreo KDZ over your phone. You may want to do that anyways...
Click to expand...
Click to collapse
Wow, a simple Master Reset fixed this issue! Thanks, you are the best man.
Jkho89 said:
Thanks, you are the best man.
Click to expand...
Click to collapse
Seconded!
ETA: I think your LG launcher had the "simple mode" option (or whatever it is called) turned on. I am using Nova too, so I am not positive where that setting is.
jaysus145 said:
Seconded!
ETA: I think your LG launcher had the "simple mode" option (or whatever it is called) turned on. I am using Nova too, so I am not positive where that setting is.
Click to expand...
Click to collapse
I am quite happy with the UI as is. I am just glad that I was able to get out of that "simple mode" UI.
The UI looks awesome now!
https://photos.app.goo.gl/k5yCxcVmWJvw9NrN8

Weird issue

The 1st time i root my device v300s korean variant i was able to flash los and aosp rom by kdz to us998 all of aosp and los base rom boot without any problem until i flash back to stock yesterday i mean kdz back to v300s with stock recovery to check something after that i re root back to us998 and flash twrp with same step like i do 1st time and guess what all los and aosp base rom did not pass boot animation.
And today whole day i was flashing kdz back and forth and try to remember what i did 1st time root but no luck still wont boot.
But when i flash kdz to h930 it boot fine i mean all the aosp and los base rom but when i kdz back to us998 still no luck i spend the entire day doing it still no luck.
The reason i must kdz to us998 is because korean variant only can get signal in us998.
I read alot of thread most people except h930 cant get pass boot animation. I really have no clue why no problem for me in the 1st place but now im clueless.
If anyone can help me greatly appreciated.

i need help, my problem is with lgv30 firmware update

I installed a custom room in my LG V30 and then I started to have problems with the camera and other things and now I want to reinstall the official ROM and it remains in firmware now waiting for a connection and when I use LG Bride and my cell phone turns off to update stop responding and stay in firmware update
jhon7878 said:
I installed a custom room in my LG V30 and then I started to have problems with the camera and other things and now I want to reinstall the official ROM
Click to expand...
Click to collapse
You don't say WHICH V30 you have. That's important information you left off. If cross flashed to another variant, what was the last stock firmware you used before installing custom ROM?
You can either:
* restore the TWRP backup you made before flashing the LOS- based custom ROM.
You did make a backup, right?
or
* flash TWRP-flashable zip (ROM) made from stock firmware.
Made for V30 with TRWP custom recovery by our Devs; basically stock ROM but with DTS 3D and other stuff already enabled. We have them for several V30 variants -- which is why we need to know what you have.
or
* use Dev Patched LGUP to install LG stock KDZ for your V30 variant.
Your Bootloader will still be unlocked. You will then need to follow WTF Section 6 Instructions to re-install TWRP, reformat internal memory, root. Unless you have T-Mobile H932, which uses different method to install TWRP. Which is why we need to know what variant you have.
(Saying you have a "V30" is like saying you have a "Dell" computer. It tells us very little.)
jhon7878 said:
LG Bridge and my cell phone turns off to update stop responding and stay in firmware update
Click to expand...
Click to collapse
LG Bridge isn't going to work for you on LOS-based custom ROMs. It's LG software looking for LG stock firmware to update.
solution
Thank you very much to those who have answered me, and tried most of the forms and just brick the cell phone, finally I read on a page that served to let much of the battery run out and try again and I did it and miracle It worked, I hope this helps another person with a similar problem.

Should I expect for a stable Android 10 custom rom in the future for LG V30 US998?

I am struggled flashing the Android 10 cook rom in my LG V30 North American variant, specifically US998 model. Of course there is nothing wrong at flashing process. No crashing, no bootlooping, everything processed pretty well until I kept getting Wifi issue all the time. I attempted various of solutions like Jeff's backup, Oreo Modem, and other kinds of solution but no luck. And of course, I won't have any ability to access to Wifi if I kept on using Q ROM. I am just a newbie here so I don't know if it happened on Pie as well, but currently, I am running Havoc OS 2.9, and it worked perfectly fine. I flashed straight through Pie KDZ, so I'm afriad if it made permanent change to my device that prevented the Wifi to work ( Yes I already read the note, and it said to LOS 16 based rom, but I am running fine, nothing happened lol )
So am I permanently not able to use any kind of Android Q ROM Cook anymore, or am I able to get Wifi to work if I kept waiting and waiting for a completed stable version? Ty
Android 10 is completely stable tho, wifi is a hit and miss, try to downgrade to H933 and upgrade to stock pie, then flash android 10 again, nougat always seemed to fix stuffs, canada variant in particular, look in ChazzMatt's threads for flashing stock pie, there is a workaround about how to flash H933 nougat
Wait. Do I need to flash directly from LOS-16 based to Nought Partition DL and then flash KDZ to Pie, or stock Oreo first then Nought?
Lucien1997 said:
Android 10 is completely stable tho, wifi is a hit and miss, try to downgrade to H933 and upgrade to stock pie, then flash android 10 again, nougat always seemed to fix stuffs, canada variant in particular, look in ChazzMatt's threads for flashing stock pie, there is a workaround about how to flash H933 nougat
Click to expand...
Click to collapse
Wait! Am I able to flash directly to H933 KDZ then flash stock Pie? Or I need to downgrade to Oreo and then do the rest?
https://forum.xda-developers.com/showpost.php?p=81499481&postcount=593
https://forum.xda-developers.com/showpost.php?p=80347089&postcount=6
Here are the links about H933 nougat downgrade, try it, apply the Q wifi fixes if necessary and let us know how it went
Nvm. I have no idea how stupid I am ?.
The thing is, I did put the Jeff's backup folder on TWRP folder, but I cant get why I did put it straight to backup folder but not the folder with my model printed in the title. There is a folder inside the backup folder, I put it in there, and I got Wifi. How strange it is lol
Anyway, thanks a lot for your support

Bootlooping after attempting to flash Android 10 ROMS

My V30 doesn't seem to enjoy being flashed with Android 10, as it bootloops no matter what ROM I decide to use (Lineage, Havoc, Pixel Experience), and now I'm thoroughly stumped on what to do, as I can't find a fix for this issue. My phones bootloader is unlocked via Frankenstein, and I've used the method of flashing over 10d with 30b and having no luck. I've recently come across a post that said to attempt trying 20b to 30b, which I'll try as a last effort to get this working, but I'd still appreciate advice on what to do. Whether it be this last method, a modification of it, or just something else entirely, I'd be forever grateful for the help.
If you need more information, feel free to ask and I'll provide to the best of my ability.
AkajiWins said:
My V30 doesn't seem to enjoy being flashed with Android 10, as it bootloops no matter what ROM I decide to use (Lineage, Havoc, Pixel Experience), and now I'm thoroughly stumped on what to do, as I can't find a fix for this issue. My phones bootloader is unlocked via Frankenstein.
Click to expand...
Click to collapse
So you Frankensteined to US998, then unlocked the bootloader via WTF exploit. What variant did you start with?
AkajiWins said:
I've used the method of flashing over 10d (Nougat/Android 7) with 30b (Pie/Android 9) and having no luck. I've recently come across a post that said to attempt trying 20b (early Oreo) to 30b, which I'll try as a last effort to get this working, but I'd still appreciate advice on what to do. Whether it be this last method, a modification of it, or just something else entirely, I'd be forever grateful for the help.
If you need more information, feel free to ask and I'll provide to the best of my ability.
Click to expand...
Click to collapse
1) You need stock Android 9 (Pie) as a base before flashing any LOS-17 (Android 10) ROMs. But you seem to know that.
There are several methods to update to to Pie US998. See US998 Pie KDZ thread, post #2 and FOUR MORE WORKAROUND in post #6.
2) What variant did you start with? If you have former AT&T H931 or Canada H933, you'll need to do additional prep steps before installing any LOS custom ROMs.
Of course, you've read the V30 custom ROMs FAQ -- before you even unlocked your bootloader -- right? It tells all this and conveys other important information. This FAQ is prominently linked in the WTF instructions, with suggestion to read first, then come come back to finish unlocking bootloader...
V30 CUSTOM ROMS FAQ
https://forum.xda-developers.com/showpost.php?p=79459374&postcount=2
ChazzMatt said:
So you Frankensteined to US998, then unlocked the bootloader via WTF exploit. What variant did you start with?
1) You need stock Android 9 (Pie) as a base before flashing any LOS-17 (Android 10) ROMs. But you seem to know that.
There are several methods to update to to Pie US998. See US998 Pie KDZ thread, post #2 and FOUR MORE WORKAROUND in post #6.
2) What variant did you start with? If you have former AT&T H931 or Canada H933, you'll need to do additional prep steps before installing any LOS custom ROMs.
Of course, you've read the V30 custom ROMs FAQ -- before you even unlocked your bootloader -- right? It tells all this and conveys other important information. This FAQ is prominently linked in the WTF instructions, with suggestion to read first, then come come back to finish unlocking bootloader...
V30 CUSTOM ROMS FAQ
https://forum.xda-developers.com/showpost.php?p=79459374&postcount=2
Click to expand...
Click to collapse
Yes, I did read through the FAQ before and after unlocking. My variant is the US998U/V30+, which is why I'm a bit confused. The US998 and US998U are identical, aside from storage capacity, right?
I was following one of the guides you posted that stated:
ChazzMatt said:
So for installing the KDZ, I suggest FIRST downgrading to US998 Nougat 10d via Partition DL mode, Master Reset, then Refurbish to US998 Pie KDZ. Here are the steps...
If you have problems flashing this US998 Pie 30b KDZ, see post #6 for FOUR more workaround methods proven to work for some people.
You should probably use this method (DOWNGRADE to NOUGAT first) even if you have TWRP installed. Then reinstall TWRP again after successfully updating to Pie.
KDZ INSTALLATION INSTRUCTIONS
0) Turn off phone, manually go into Download mode before opening Dev Patched LGUP.
1) Using Dev Patched LGUP from THIS thread, flash US998 10d Nougat KDZ via Dev Patched LGUP using Partition DL mode. Select ALL partitions.
2) Master Reset. This is NOT Factory Reset.
3) Boot up to Welcome screen. Turn off phone, manually go back into Download mode.
4) Flash US998 30b Pie KDZ via Dev Patched LGUP using Refurbish mode.
5) Master Reset. This is NOT Factory Reset.
If you did not unlock your bootloader before doing this, then you bootloader is still locked -- because that's what you want. Finished. Set up your phone.
If you had unlocked bootloader before doing all this, you will still have it. Boot to ADB, and PLEASE follow these instructions for re-install TWRP and root!!
Click to expand...
Click to collapse
So that's what I had done a few days ago, but that's also when my problems arose. I was on the TWRP flashable kdz of 30b for a month or two now after Frankensteining it, but wanted to try out some 10 ROMS, but attempting to flash those ROMs was when I started having issues. Flashing the stock US998 kdzs didn't cause issues, the 30b zip I had been running daily wasn't weird, and the md5s for all the files downloaded matched what was provided as correct. That's why I'm a bit stumped, since I believe I followed all the guides I've looked at to make things work correctly, but this one part is giving me a hard time.
I will try those other four methods, since I don't believe to have seen them yet. I will provide an edit to this post after trying them, thank you.
AkajiWins said:
Yes, I did read through the FAQ before and after unlocking. My variant is the US998U/V30+, which is why I'm a bit confused. The US998 and US998U are identical, aside from storage capacity, right?
I was following one of the guides you posted that stated:
So that's what I had done a few days ago, but that's also when my problems arose. I was on the TWRP flashable kdz of 30b for a month or two now after Frankensteining it, but wanted to try out some 10 ROMS, but attempting to flash those ROMs was when I started having issues. Flashing the stock US998 kdzs didn't cause issues, the 30b zip I had been running daily wasn't weird, and the md5s for all the files downloaded matched what was provided as correct. That's why I'm a bit stumped, since I believe I followed all the guides I've looked at to make things work correctly, but this one part is giving me a hard time.
I will try those other four methods, since I don't believe to have seen them yet. I will provide an edit to this post after trying them, thank you.
Click to expand...
Click to collapse
If you Frankenstein'ed, I'm asking what your original variant is. Frankenstein is to convert North American variant to another, also called cross flashing.
Whereas " WTF" is bootloader unlock and installing TWRP. Some North American variants have to Frankenstein to US998 for fastboot flash commands. Then they can use WTF INSTRUCTIONS. But Frankenstein itself is not bootloader unlock, TWRP and root. It's just fully converting one variant to another. It ONLY works with the North American variants, except for T-Mobile H932.
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OK, so you were on LG US998 30b stock Pie successfully.
Put your IMEI into this database and tell me what it says? Don't post your IMEI here, publicly. Just curious what variant it says you have.
https://www.imeipro.info/
If you have V30+ US998 , then it's either native US998U or was formerly LS998U and converted to US998 by you or previous owner if you bought it used.
Neither AT&T H931 not Canada H933 have a native V30+, but I've seen H933 V30+ which were Frankenstein'ed.
ChazzMatt said:
If you Frankenstein'ed, I'm asking what your original variant is. Frankenstein is to convert North American variant to another, also called cross flashing.
Whereas " WTF" is bootloader unlock and installing TWRP. Some North American variants have to Frankenstein to US998 for fastboot flash commands. Then they can use WTF INSTRUCTIONS. But Frankenstein itself is not bootloader unlock, TWRP and root. It's just fully converting one variant to another. It ONLY works with the North American variants, except for T-Mobile H932.
_____
OK, so you were on LG US998 30b stock Pie successfully.
Put your IMEI into this database and tell me what it says? Don't post your IMEI here, publicly. Just curious what variant it says you have.
https://www.imeipro.info/
If you have V30+ US998 , then it's either native US998U or was formerly LS998U and converted to US998 by you or previous owner if you bought it used.
Neither AT&T H931 not Canada H933 have a native V30+, but I've seen H933 V30+ which were Frankenstein'ed.
Click to expand...
Click to collapse
Ahh, alrighty, I understand the difference now. So I had Frankenstein'ed to unlock my bootloader, then unlocked it with "WTF".
Also, the IMEI checker reported my device as a US998U V30+, which was what I bought it as used.
AkajiWins said:
Ahh, alrighty, I understand the difference now. So I had Frankenstein'ed to unlock my bootloader, then unlocked it with "WTF".
Also, the IMEI checker reported my device as a US998U V30+, which was what I bought it as used.
Click to expand...
Click to collapse
Merely downgrading to earlier firmware is not Frankenstein. Frankenstein is fully converting one variant to another. It takes on those different LTE bands, etc. Cross flashing AT&T H931 to US998 gives it CDMA bands the H931 doesn't have, different LTE bands, fastboot flash commands. Same with Frankenstein'ed H933. See screenshot.
If you already had US998 firmware and your IMEI check says it's a native US998U (V30+), then you didn't Frankenstein to US998. You already had US998 with fastboot flash commands. You just used LGUP to downgrade to early US998 Oreo for WTF bootloader unlock, TWRP installation and root and/or maybe you went to US998 Nougat at one point. But you were already US998. You weren't on LS998, AS998, H933, H931, VS996 firmware, at any point in time.
Why you are bootlooping on LOS-17 Android 10 ROMs, I don't know. You don't have former H931 or H933, and you said you were on US998 30b (Pie) when you tried to flash those ROMs.
ChazzMatt said:
Merely downgrading to earlier firmware is not Frankenstein. Frankenstein is fully converting one variant to another. It takes on those different LTE bands, etc. Cross flashing AT&T H931 to US998 gives it CDMA bands the H931 doesn't have, different LTE bands, fastboot flash commands. Same with Frankenstein'ed H933. See screenshot.
If you already had US998 firmware and your IMEI check says it's a native US998U (V30+), then you didn't Frankenstein. You already had US998 with fastboot flash commands. You just used LGUP to downgrade to early Oreo for WTF bootloader unlock, TWRP installation and root.
Why you are bootlooping on LOS-17 Android 10 ROMs, I don't know. You don't have former H931 or H933, and you said you were on US998 30b (Pie) when you tried to flash those ROMs.
Click to expand...
Click to collapse
Should I attempt to Frankenstein to a different variant then come back? I was going to try to use the fourth method that you linked to before to try to put myself on an actual US998.
AkajiWins said:
Should I attempt to Frankenstein to a different variant then come back? I was going to try to use the fourth method that you linked to before to try to put myself on an actual US998.
Click to expand...
Click to collapse
The problem with Method #4 is you are willingly converting to Canada H933. While that might get you back to US998 30b, it will then give you more difficulty in flashing LOS ROMs. You have to go through the tedious extra steps of former H931/H933.
ChazzMatt said:
The problem with Method #4 is you are willingly converting to Canada H933. While that might get you back to US998 30b, it will then give you more difficulty in flashing LOS ROMs. You have to go through the tedious extra steps of former H931/H933.
Click to expand...
Click to collapse
As someone who doesn't necessarily mind the extra preparation, would you recommend it for someone in my predicament? And is there any log file I can provide to hopefully help give more insight?
AkajiWins said:
As someone who doesn't necessarily mind the extra preparation, would you recommend it for someone in my predicament?
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Click to collapse
That's your decision. It should get you back to 30b. After that, for flashing ROMs, you'll have to follow the other instructions for H933 (since you will have converted to that, then converted back).
ChazzMatt said:
That's your decision. It should get you back to 30b. After that, for flashing ROMs, you'll have to follow the other instructions for H933 (since you will have converted to that, then converted back).
Click to expand...
Click to collapse
Though if I am to do that, would I still keep the bands I have at the moment or would I lose them when converting? Would I have to refflash my modem partition(s)?
AkajiWins said:
Though if I am to do that, would I still keep the bands I have at the moment or would I lose them when converting? Would I have to refflash my modem partition(s)?
Click to expand...
Click to collapse
The method is flash to H933 Nougat I believe, then flash back to US998. You don't stay on H933. You flash everything via LGUP Partition DL mode.
ChazzMatt said:
The method is flash to H933 Nougat I believe, then flash back to US998. You don't stay on H933.
Click to expand...
Click to collapse
Ah alright, I'll try that. So just to clarify, I'd flash over to an H933, then come back to a US998, and then install the 30b kdz, and that should hopefully fix my issues?
AkajiWins said:
Ah alright, I'll try that. So just to clarify, I'd flash over to an H933, then come back to a US998, and then install the 30b kdz, and that should hopefully fix my issues?
Click to expand...
Click to collapse
Yes. But read Method 4 carefully. Involves timing and buttons.
ChazzMatt said:
Yes. But read Method 4 carefully. Involves timing and buttons.
Click to expand...
Click to collapse
LGUP doesn't seem to recognize my phone as a H933 after flashing and rebooting back to download mode, but the phone seems to know it's one when I flash and it says what build it's on and what's being flashed.
EDIT 1: Reinstalling LGUP fixed that particular issue, so I'll have to restart the procedure just so it's as unobstructed as possible.
EDIT 2: Never mind, still the same strange occurrence that happened before. I'll try to move on and see if it'll still work.
Okay so, after a lot of trouble, everything seems to work. I ran Jett's Wifi Backup fix to fix the broken wifi on Havoc, along with the Haumea kernel, and now everything seems stable.
Thank you for your help!!
I guess I just had to keep doing the procedure until it stuck
Hi guys, I'm a bit lost too.
My phone is a V300S that is Frankensteined to US998 with V300S modem, bootloader unlocked and installed TWRP.
However i also faced the problem of installing Android 10 based roms causing bootloops, I've seen on the Custom ROMs page that i needed the lastest stock Pie blobs, which is what i have currently (30b)
Is this variant using a different way for custom ROMs? Or did i do something entirely wrong on Frankensteining?
Edit: silly me recently saw that i need to convert my V300S to H930, not US998... I guess I'll try that first
Update: well everything went south, now i can't go back to US99830b anymore, stuck at V300s Oreo. I guess I'll start everything over again, but if there are things or procedures i needed to know, please, any help will do

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