Sadly might have bricked my H933 - LG V30 Questions & Answers

Hi guys, dealing with a H933 --> US998.
TL;DR - stuck on LG logo, no download mode, no fastboot, master reset does not work, LGUP (patched or unpatched) doesn't recognize phone, computer doesn't recognize it either.
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Frankenstein method followed correctly, and had unlocked bootloader + root.
Followed H933 specific steps to install AOSP/Linage ROMS. Attempted to install Lineage 16.0 and flashed Lunar kernel. Booted to animation logo and didn't get past that.
Decided to revert back to stock Pie by flashing one of the US998 kdz's. To be honest with you, I tried a few different ones and everything was working fine (I went from Nougat --> Oreo --> Pie in order to bring myself back to Pie firmware to try Lineage install once more but with stock kernel).
This time, phone wouldn't move past the LG animation (right after the logo).
At this point, I lost access to download mode - but I still had fastboot. Installed TWRP again through fastboot and attempted to flash TWRP-JOAN_H933_CANADA_20i.
Lost unlocked bootloader image - lost access to fastboot and recovery - and still didn't have download mode (it would not pass the original download mode image) and would not be recognized by LGUP (patched or unpatched). The phone would be stuck at LG logo, and keep rebooting.
At that point I decided to try a Master Reset. On the second YES, it would hang, and then go back to the LG logo bootloop. Phone does not get recognized by computer.
I know I messed up in numerous points. I got overzealous and likely didn't pay enough attention. Spent all night trying to resurrect it, but to no avail. Any advice for me? Or is the device fully bricked? :crying:
Greatly appreciate any feedback and assistance. Thank you in advance.

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Sorry to hear that. I think you have four options.
1) Reach out on the telegram v30 forum to someone with an Octoplus box to remotely resurrect your device.
2) Send it in for "repair".
3) Do it yourself, see https://forum.xda-developers.com/g4/general/guide-unbrick-via-external-sdcard-qfil-t3748946.
4) Buy a new phone.
The third option isn't hard, but may involve a lot of work so I'd go with the first one.

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don"t worry too much, that phone is almost unbrickable, at least you are really unlucky, you will revive it. Wait for @ChazzMatt to give you some help before giving up hope entirely
Meanwhile, I can give you some advice because I was stuck one time on LG Logo, you were on which firmware when it last booted up?
While it is bootlooping, connect it to the pc, do a soft reset with power and volume down buttons, release them when the screen goes black and immediately press the volume up button to access fastboot menu, and if PC doesnt recognize it, shut down the phone by selecting it with volume button.
Deconnecting the phone and press volume down while reconnecting it to the pc to try to go to download mode and kdz your phone.

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Somewhat working
Hey guys - brief update. I got back to US998 Oreo with bootloader unlocked and root. I tried to upgrade to US998 Pie by flashing US99830b.zip in TWRP following all the steps, and now the phone doesn't boot again and gets stuck on the LG Logo. Download mode shows "Now waiting For Any Connection" and doesn't detect PC. Any idea how to get this to work so I can flash back to US998 Oreo and just stick there?

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Update: Flashed US99820H and back in running order. I still wonder how to get my phone onto Pie while keeping bootloader unlocked and have root, without having the phone get stuck.

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Ergo-sum said:
Update: Flashed US99820H and back in running order.
Click to expand...
Click to collapse
Glad you got your phone working again!
Ergo-sum said:
I still wonder how to get my phone onto Pie while keeping bootloader unlocked and have root, without having the phone get stuck.
Click to expand...
Click to collapse
Thoroughly discussed in the US998 Pie KDZ thread. Top of post #2 (one method), all of post #6 (three different workarounds).
If none of the 4 methods work for you, there are no other answers and you have to wait for another US998 Pie KDZ.

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I've struggle for a couple days and finally i can flash pie stock rom to my us998. What i did :
1.Refurbish us99820h lgup, boot os
2.flash and boot twrp via fastboot
3.flash magisk,dm verity, rctd, via twrp...format data reboot format data then magisk again
4. Boot OS
5. Boot recovery then shutdown
6. Partition DL h93310h lgup except RECOVERY AND RECOVERYBAK
7. Boot OS .... Once your lg logo appeared ( BEFORE LG ANIMATION ) press and hold vol down + power. Release power and hold it again IMMEDIATELY once you see LG LOGO ( BEFORE LG ANIMATION ) click the "yes" and "yes"
8. You got the twrp
9. Flash us99820e + magisk via twrp , boot up
10. Refurbish us99820h, boot up
11. Do step 2 and 3
12. Boot OS
13. Boot recovery
14. Flash us99830b via twrp then flash magisk
15. Done u should have pie now

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What you are describing is Method #3 in post #6 of the US998 KDZ Pie thread.
It's the workaround which has the most success but is also most complicated.
havetolearn said:
I've struggle for a couple days and finally i can flash pie stock rom to my us998. What i did :
1.Refurbish us99820h lgup, boot os
2.flash and boot twrp via fastboot
3.flash magisk,dm verity, rctd, via twrp...format data reboot format data then magisk again
4. Boot OS
5. Boot recovery then shutdown
6. Partition DL h93310h lgup except RECOVERY AND RECOVERYBAK
7. Boot OS .... Once your lg logo appeared ( BEFORE LG ANIMATION ) press and hold vol down + power. Release power and hold it again IMMEDIATELY once you see LG LOGO ( BEFORE LG ANIMATION ) click the "yes" and "yes"
8. You got the twrp
9. Flash us99820e + magisk via twrp , boot up
10. Refurbish us99820h, boot up
11. Do step 2 and 3
12. Boot OS
13. Boot recovery
14. Flash us99830b via twrp then flash magisk
15. Done u should have pie now
Click to expand...
Click to collapse

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ChazzMatt said:
What you are describing is Method #3 in post #6 of the US998 KDZ Pie thread.
It's the workaround which has the most success but is also most complicated.
Click to expand...
Click to collapse
I heard that i will got many problem if i flash aosp rom after upgrade to pie.... Can i fix it with that method?

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havetolearn said:
I heard that i will got many problem if i flash aosp rom after upgrade to pie.... Can i fix it with that method?
Click to expand...
Click to collapse
Yes.
What you are talking about is you can't run LOS-16 ROMs on stock Pie. You have to downgrade back to Oreo, and even then you will forever have to run permissive kernel with Oreo firmware for camera/flashlight to work since you once flashed stock Pie.
You would downgrade to Oreo 20h, flash all those steps (H933 Nougat, etc) and eventually get back to US998 20h and then stay there.
More commentary here about stock Pie:
https://forum.xda-developers.com/showpost.php?p=80876797&postcount=65

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ChazzMatt said:
Yes.
What you are talking about is you can't run LOS-16 ROMs on stock Pie. You have to downgrade back to Oreo, and even then you will forever have to run permissive kernel with Oreo firmware for camera/flashlight to work since you once flashed stock Pie.
You would downgrade to Oreo 20h, flash all those steps (H933 Nougat, etc) and eventually get back to US998 20h and then stay there.
More commentary here about stock Pie:
https://forum.xda-developers.com/showpost.php?p=80876797&postcount=65
Click to expand...
Click to collapse
Man there are so many broken oreo's firmware after update to pie.... Hmm, i think i will stay at pie because i need lg screen recording feature. It can record screen and system sound together. Thx for replying ChazzMatt

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ChazzMatt said:
Yes.
What you are talking about is you can't run LOS-16 ROMs on stock Pie. You have to downgrade back to Oreo, and even then you will forever have to run permissive kernel with Oreo firmware for camera/flashlight to work since you once flashed stock Pie.
You would downgrade to Oreo 20h, flash all those steps (H933 Nougat, etc) and eventually get back to US998 20h and then stay there.
More commentary here about stock Pie:
https://forum.xda-developers.com/showpost.php?p=80876797&postcount=65
Click to expand...
Click to collapse
Uhh sorry Chazz.. Can you help me? I found my phone have trouble with wifi... Whenever i try to connect it just told me "saved"

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havetolearn said:
Uhh sorry Chazz.. Can you help me? I found my phone have trouble with wifi... Whenever i try to connect it just told me "saved"
Click to expand...
Click to collapse
1) On my backup V30+ which is on stock US998 30b Pie (but doesn't have a SIM card inserted nor even signed into my Google account), it's connected fine to my home Wi-Fi network so I know it's not a stock US998 Pie issue...
2) This happens even on public free Wi-Fi networks? (Here in the U.S. we have McDonalds, Starbucks?) That would give you clue whether it's one particular router or all your phone has problem with. Or possibly problem with the type of encryption you have on your router.
Usually that message means the router is rejecting the device. You just have to figure out why. But is it one router or all?
3) If one particular router, try rebooting the Wi-Fi router itself.
4) Make sure you don't have any kind of router whitelist for certain devices or MAC addresses and your phone is not included. Or that you don't have some older b/g Wi-Fi chipset standard set; this one is not likely but I had that happen for an older Wi-Fi printer when I had "N" or higher set on my router.
5) On the phone, try forgetting the Wi-Fi network and refinding it. Enter in the password again.
6) Almost last, on the phone try the Network Settings Reset. (See screenshot from US998 30b Pie.) It will reset all network settings including Wi-Fi, Bluetooth.
7) Last, try Factory Reset?

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In the same boat
Ergo-sum said:
Hi guys, dealing with a H933 --> US998.
TL;DR - stuck on LG logo, no download mode, no fastboot, master reset does not work, LGUP (patched or unpatched) doesn't recognize phone, computer doesn't recognize it either.
----
Frankenstein method followed correctly, and had unlocked bootloader + root.
Followed H933 specific steps to install AOSP/Linage ROMS. Attempted to install Lineage 16.0 and flashed Lunar kernel. Booted to animation logo and didn't get past that.
Decided to revert back to stock Pie by flashing one of the US998 kdz's. To be honest with you, I tried a few different ones and everything was working fine (I went from Nougat --> Oreo --> Pie in order to bring myself back to Pie firmware to try Lineage install once more but with stock kernel).
This time, phone wouldn't move past the LG animation (right after the logo).
At this point, I lost access to download mode - but I still had fastboot. Installed TWRP again through fastboot and attempted to flash TWRP-JOAN_H933_CANADA_20i.
Lost unlocked bootloader image - lost access to fastboot and recovery - and still didn't have download mode (it would not pass the original download mode image) and would not be recognized by LGUP (patched or unpatched). The phone would be stuck at LG logo, and keep rebooting.
At that point I decided to try a Master Reset. On the second YES, it would hang, and then go back to the LG logo bootloop. Phone does not get recognized by computer.
I know I messed up in numerous points. I got overzealous and likely didn't pay enough attention. Spent all night trying to resurrect it, but to no avail. Any advice for me? Or is the device fully bricked? :crying:
Greatly appreciate any feedback and assistance. Thank you in advance.
Click to expand...
Click to collapse
How did you unbrick your phone? I'm in the same boat as you. I can get to the Download mode, but not past the blue dot image. If I try to master reset, the phone just restarts after the second time I select yes. It's been bootlooping like this for a while now. For context, I was on US99820H(dirty flashed via twrp) when I tried to flash H93330k. @ChazzMatt, I know this is a long shot as what I did was incredibly stupid, but is there anyway I can get out of this?

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Ergo-sum said:
Hey guys - brief update. I got back to US998 Oreo with bootloader unlocked and root. I tried to upgrade to US998 Pie by flashing US99830b.zip in TWRP following all the steps, and now the phone doesn't boot again and gets stuck on the LG Logo. Download mode shows "Now waiting For Any Connection" and doesn't detect PC. Any idea how to get this to work so I can flash back to US998 Oreo and just stick there?
Click to expand...
Click to collapse
But, how did you do that if you cant (couldnt) access to fastboot or recovery? Im crazy ?

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please. help me.
Ergo-sum said:
Hey guys - brief update. I got back to US998 Oreo with bootloader unlocked and root. I tried to upgrade to US998 Pie by flashing US99830b.zip in TWRP following all the steps, and now the phone doesn't boot again and gets stuck on the LG Logo. Download mode shows "Now waiting For Any Connection" and doesn't detect PC. Any idea how to get this to work so I can flash back to US998 Oreo and just stick there?
Click to expand...
Click to collapse
Please help me, I am the same as you. please

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phamtuyenk7d said:
Please help me, I am the same as you. please
Click to expand...
Click to collapse
See this post for Recovery of botched US998 30B upgrade:
https://forum.xda-developers.com/showpost.php?p=81728547&postcount=641