Develop Bugs

LG G3 LS990 bricked

Hi all long time lurker in the forums made an account today just to make this post so here I go. I was doing the OTA update for lollipop at night and it was taking a really long time so I fell asleep. I woke up in the morning and found my phone to be stuck in a bootloop :crying: looking at various posts I figured a factory reset would be my best option but it didn't work in fact it made my phone worse....It stays on the LG boot up screen for a few minutes then goes to a black screen. I went back to looking at forums again and found a post about how flashing my phone would get it working again but problem is that my computer no longer recognizes my device and fails to connect. Another option I found was to use the system recovery mode and apply update from external sdcard but when I do this I get E: failed to mount /sdcard (Invalid argument). I've tried 2 sdcards and formatted them both multiple times but I still get the error. I'm not sure what to do and I am willing to try anything.

Have you tried this? http://forum.xda-developers.com/showthread.php?t=2785089

RapHaeL_4_4_4_ said:
Have you tried this? http://forum.xda-developers.com/showthread.php?t=2785089
Click to expand...
Click to collapse
Trying it now everything is downloading for it now.

RapHaeL_4_4_4_ said:
Have you tried this? http://forum.xda-developers.com/showthread.php?t=2785089
Click to expand...
Click to collapse
Tried both neither worked :/ Any other suggestions?

BigJaay said:
Tried both neither worked :/ Any other suggestions?
Click to expand...
Click to collapse
Have you installed the LG drivers before?
And do you have any error code or something?
What happen when it don't work?

BigJaay said:
Hi all long time lurker in the forums made an account today just to make this post so here I go. I was doing the OTA update for lollipop at night and it was taking a really long time so I fell asleep. I woke up in the morning and found my phone to be stuck in a bootloop :crying: looking at various posts I figured a factory reset would be my best option but it didn't work in fact it made my phone worse....It stays on the LG boot up screen for a few minutes then goes to a black screen. I went back to looking at forums again and found a post about how flashing my phone would get it working again but problem is that my computer no longer recognizes my device and fails to connect. Another option I found was to use the system recovery mode and apply update from external sdcard but when I do this I get E: failed to mount /sdcard (Invalid argument). I've tried 2 sdcards and formatted them both multiple times but I still get the error. I'm not sure what to do and I am willing to try anything.
Click to expand...
Click to collapse
This is what you have to do.
1. Take the battery out
2. Put the battery back in (dont press power button)
3. Press vol up button and connect cable (without pressing power button)
This should lead you to download mode.
If you do get download mode then follow the procedure of LGFLASHTOOL and TOT back to stock
I suggest using ZV6 tot or ZV8 if you were already on LP.
Best of luck!

After flashing the device using the link (finally got it working) it does everything it needs to do but when it reboots on my phone screen is says Factory Reset Status then it has a giant 2 on the screen so I'm not sure where to go from here. In the flash tool at the end it says
Mini OS boot check....
Mini OS status=2
Fail to set mini OS status 3

BigJaay said:
After flashing the device using the link (finally got it working) it does everything it needs to do but when it reboots on my phone screen is says Factory Reset Status then it has a giant 2 on the screen so I'm not sure where to go from here. In the flash tool at the end it says
Mini OS boot check....
Mini OS status=2
Fail to set mini OS status 3
Click to expand...
Click to collapse
You did a CSE Flash or a normal flash?
If I was you I would just reflash with the CSE Flash with another kdz, or if you use the TOT, download another one and try again..
If anything change let me know

RapHaeL_4_4_4_ said:
You did a CSE Flash or a normal flash?
If I was you I would just reflash with the CSE Flash with another kdz, or if you use the TOT, download another one and try again..
If anything change let me know
Click to expand...
Click to collapse
Tried it with ZV4 and ZV8 so far getting the same thing. About to try it with ZV6 when it finishes downloading the zip.

RapHaeL_4_4_4_ said:
You did a CSE Flash or a normal flash?
If I was you I would just reflash with the CSE Flash with another kdz, or if you use the TOT, download another one and try again..
If anything change let me know
Click to expand...
Click to collapse
Got it using http://forum.xda-developers.com/sprint-lg-g3/help/temp-bricked-issues-restoring-using-t2851635

BigJaay said:
Got it using http://forum.xda-developers.com/sprint-lg-g3/help/temp-bricked-issues-restoring-using-t2851635
Click to expand...
Click to collapse
I'm proud you found it!
Enjoy your device!

Thanks everyone!

[solved] D855 Softbrick - need help - DL mode working but no succesful flash

Hey guys, I need your help!
I tried to make my long story short, but that didn't work, so here's my complete story:
When everything was fine, I had CM13 running with TWRP 2.8.5.0.
My first intention was to restore a Stock 4.4 Backup and update it to 5.x. After restoring it didn't boot, so I did a factory reset and it worked.
Next I wanted to update to 5.0 via OTA, but that ofc couldn't work because of TWRP.
I knew the only way to update to 5.x was to flash a .kdz an lose all data. I didn't want to do that, so instead I tried to flash the official 30B image from here.
I followed the instructions given in the first post (updated TWRP to 2.8.7.0 too), but after flashing the files and hitting the "reboot system" button in TWRP it booted into TWRP again. I tried flashing again because maybe something went wrong. I even downloaded all the files again to make sure I didn't have a bad download, but no luck. So I restored the previous CM13 6.0.1 rom. At first it didn't succeed because my internal memory was full, but after deleting the 30B files it restored just fine. So when it was ready I hit the reboot button aaaannd it booted into TWRP AGAIN...
I searched the internet and found a "LG_G3_Flash2FixStuckRecovery.zip" file, but that didn't help either. (I connected my G3 to my pc using MTP in TWRP to backup all important data, so I don't care if I need to wipe everything.)
Now I knew something went badly wrong and tried using the LG flashtool 2014 for .kdz and another one for .tot files to recover my G3.
Still no luck. When using the 2014 tool and the official 30B kdz it runs till 100% at my phone (at the same time it reaches 80% on my pc at the LG mobile support tool). But then it's only showing the LG logo for some seconds, screen black, lg logo, black, ... an infinite loop.
When using the .tot method I can't get past the "Model Information Check FAIL!" message. It looks like I lost my IMEI because it shows "IMEI: NULL". I got an EFS Backup in a zip file though, so it's not completely lost. I tried both methods on 2 different pc's with win 8.1 and 7 (and win10 for some things), but I always get the same results.
When turning it on using the power button, I see the LG logo followed by a black screen and again the LG logo.
When connecting it to the charger I at first see a charging screen, not the charging animation, but the "loading" battery screen you get before the animation. But after it I get stuck in the above mentioned LG logo.
It's possible to get to the factory reset screen, but I get to the LG logo again after "performing" a factory reset. Note: On the factory reset screen, there is a blue "part" on the top of the screen which looks different compared to when using CM13 and Stock 4.4. The blue color is darker, so I guess, I partly got 30B installed.
I didn't plan to write that much, but I think it's better because I described almost everything I did.
I have no idea what to do now, I tried everything I know and could find on the internet.
So I just hope someone is able to help me getting my G3 working again.
Many thanks!
tl;dr: Only download mode left, but can't succesfully flash any stock rom.

Now... what do u want.... ????
Downgrade from mm to lollipop.... right????
... I can help you... by teamview. Ok

reepje123 said:
Hey guys, I need your help!
I tried to make my long story short, but that didn't work, so here's my complete story:
When everything was fine, I had CM13 running with TWRP 2.8.5.0.
My first intention was to restore a Stock 4.4 Backup and update it to 5.x. After restoring it didn't boot, so I did a factory reset and it worked.
Next I wanted to update to 5.0 via OTA, but that ofc couldn't work because of TWRP.
I knew the only way to update to 5.x was to flash a .kdz an lose all data. I didn't want to do that, so instead I tried to flash the official 30B image from here.
I followed the instructions given in the first post (updated TWRP to 2.8.7.0 too), but after flashing the files and hitting the "reboot system" button in TWRP it booted into TWRP again. I tried flashing again because maybe something went wrong. I even downloaded all the files again to make sure I didn't have a bad download, but no luck. So I restored the previous CM13 6.0.1 rom. At first it didn't succeed because my internal memory was full, but after deleting the 30B files it restored just fine. So when it was ready I hit the reboot button aaaannd it booted into TWRP AGAIN...
I searched the internet and found a "LG_G3_Flash2FixStuckRecovery.zip" file, but that didn't help either. (I connected my G3 to my pc using MTP in TWRP to backup all important data, so I don't care if I need to wipe everything.)
Now I knew something went badly wrong and tried using the LG flashtool 2014 for .kdz and another one for .tot files to recover my G3.
Still no luck. When using the 2014 tool and the official 30B kdz it runs till 100% at my phone (at the same time it reaches 80% on my pc at the LG mobile support tool). But then it's only showing the LG logo for some seconds, screen black, lg logo, black, ... an infinite loop.
When using the .tot method I can't get past the "Model Information Check FAIL!" message. It looks like I lost my IMEI because it shows "IMEI: NULL". I got an EFS Backup in a zip file though, so it's not completely lost. I tried both methods on 2 different pc's with win 8.1 and 7 (and win10 for some things), but I always get the same results.
When turning it on using the power button, I see the LG logo followed by a black screen and again the LG logo.
When connecting it to the charger I at first see a charging screen, not the charging animation, but the "loading" battery screen you get before the animation. But after it I get stuck in the above mentioned LG logo.
I didn't plan to write that much, but I think it's better because I described almost everything I did.
I have no idea what to do now, I tried everything I know and could find on the internet.
So I just hope someone is able to help me.
Many thanks!
tl;dr: Only download mode left, but can't succesfully flash any stock rom.
Click to expand...
Click to collapse
Did you try other version frimwares then 30B because mabye that will work

SpaceRaider said:
Did you try other version frimwares then 30B because mabye that will work
Click to expand...
Click to collapse
Waiting for rom then 30B... how long....???

mchiensd said:
Waiting for rom then 30B... how long....???
Click to expand...
Click to collapse
What do you mean?

mchiensd said:
Now... what do u want.... ????
Click to expand...
Click to collapse
I just want to get my G3 working again, doesn't matter if stock or CM rom
SpaceRaider said:
Did you try other version frimwares then 30B because mabye that will work
Click to expand...
Click to collapse
I tried 21A .kdz and 10E or .tot. When using 21A kdz it gives an error. It tells me something like connect my phone again and try again. Only the 30B was kinda flashable.
mchiensd said:
Waiting for rom then 30B... how long....???
Click to expand...
Click to collapse
Ehm what?

SpaceRaider said:
What do you mean?
Click to expand...
Click to collapse
No... it is not but
Reepie123 cant flash (downgrade) when flash rom kdz 30B...
Yesterday... i aslo was it... for 8h search on 4rum...
I can downgrade it .... and now.. i want help reepie123. Hi.

reepje123 said:
I just want to get my G3 working again, doesn't matter if stock or CM rom
I tried 21A .kdz and 10E or .tot. When using 21A kdz it gives an error. It tells me something like connect my phone again and try again. Only the 30B was kinda flashable.
Ehm what?
Click to expand...
Click to collapse
I think you've hardbricked it

SpaceRaider said:
I think you've hardbricked it
Click to expand...
Click to collapse
No,... i think it is softbrick... but we dont know ways.

SpaceRaider said:
I think you've hardbricked it
Click to expand...
Click to collapse
You mean it's dead, completely? I thought having a download mode and seeing my G3 on my pc with a COM# port is better than seeing some QHBULK_9008 device or similar, where I need to open my G3, connect pins and some sh*t to recover it.

reepje123 said:
You mean it's dead, completely? I thought having a download mode and seeing my G3 on my pc with a COM# port is better than seeing some QHBULK_9008 device or similar, where I need to open my G3, connect pins and some sh*t to recover it.
Click to expand...
Click to collapse
It is not dead, you can always fix it but it is a very weird issue

SpaceRaider said:
It is not dead, you can always fix it but it is a very weird issue
Click to expand...
Click to collapse
Oh ok, that sounds better. So there is hope and we just need someone who knows what to do.

reepje123 said:
Oh ok, that sounds better. So there is hope and we just need someone who knows what to do.
Click to expand...
Click to collapse
Are You have Rom TOT 10x...???

mchiensd said:
Are You have Rom TOT 10x...???
Click to expand...
Click to collapse
Yes, I already tried the 10E tot. But the problem is that the flash tools gives an error: "Model Information Check FAIL!".

reepje123 said:
Yes, I already tried the 10E tot. But the problem is that the flash tools gives an error: "Model Information Check FAIL!".
Click to expand...
Click to collapse
Mabye that's because of your IMEI error

SpaceRaider said:
Mabye that's because of your IMEI error
Click to expand...
Click to collapse
I guess so, but how do I restore my EFS without having TWRP?

reepje123 said:
Yes, I already tried the 10E tot. But the problem is that the flash tools gives an error: "Model Information Check FAIL!".
Click to expand...
Click to collapse
OK.... Now, you flash TOT again with TOT file.... but dont change file DLL you have....
Download... file DLL fix...
https://drive.google.com/file/d/0B0VrTZddvLF7b3Q1b1BlQ2w0clE/view?usp=sharing

Also don't forget: Maybe its because of your OS or even Setup (Hardware/Driver related). Even if it works seemingly at first glance.
That's my experience with all flashing tools that on some machines and setups there will happen some funny stuff and corrupt systems even if its reported to be working initially.
So if you didn't try yet use another PC/Laptop preferably with Windows 7 to 8.0 (only if you disabled driver signatures)
Edit: Also try different USB-Cables.

mchiensd said:
OK.... Now, you flash TOT again with TOT file.... but dont change file DLL you have....
Download... file DLL fix...
https://drive.google.com/file/d/0B0VrTZddvLF7b3Q1b1BlQ2w0clE/view?usp=sharing
Click to expand...
Click to collapse
I couldn't find another dll. Where have you got that from? Is it safe to use?
justyourimage said:
Also don't forget: Maybe its because of your OS or even Setup (Hardware/Driver related). Even if it works seemingly at first glance.
That's my experience with all flashing tools that on some machines and setups there will happen some funny stuff and corrupt systems even if its reported to be working initially.
So if you didn't try yet use another PC/Laptop preferably with Windows 7 to 8.0 (only if you disabled driver signatures)
Edit: Also try different USB-Cables.
Click to expand...
Click to collapse
I already tried 2 PCs, one with 8.1 and another one with 7 (and 10). Both are giving almost the same result. Except the .kdz flash tool crashes on 8.1 at 99%.
I'm using the original USB cable.

reepje123 said:
I couldn't find another dll. Where have you got that from? Is it safe to use?
Click to expand...
Click to collapse
Used file DLL this to restore Lollipop for my LG D855... when i flash KDZ 30B
It safe!!!!
it from user autoprime in 4rum....

LG G4 stuck in starting apps for cm13

I've recently flashed my H811 with cm 13 build cm-13.0-20160724.
I have also tried other build and it always get stuck in "starting apps".
I can recover to the stock rom with the backup and it does work fine.

bernardog said:
I've recently flashed my H811 with cm 13 build cm-13.0-20160724.
I have also tried other build and it always get stuck in "starting apps".
I can recover to the stock rom with the backup and it does work fine.
Click to expand...
Click to collapse
Try going into recovery and wiping dalvik cache and cache

gillim74 said:
Try going into recovery and wiping dalvik cache and cache
Click to expand...
Click to collapse
I've did this multiple times. I have also tried the last 3 builds before the one of Jul 24.
No success

bernardog said:
I've did this multiple times. I have also tried the last 3 builds before the one of Jul 24.
No success
Click to expand...
Click to collapse
Try doing right after you flash the rom and gapps that worked for me

gillim74 said:
Try doing right after you flash the rom and gapps that worked for me
Click to expand...
Click to collapse
It worked for the starting apps message but then it got stuck on "finishing boot" instead.
After a few minutes it reboots by itself and then get stuck on the cyanogen logo.

bernardog said:
It worked for the starting apps message but then it got stuck on "finishing boot" instead.
After a few minutes it reboots by itself and then get stuck on the cyanogen logo.
Click to expand...
Click to collapse
What model phone do you have

gillim74 said:
what model phone do you have
Click to expand...
Click to collapse
lg g4 h811

bernardog said:
lg g4 h811
Click to expand...
Click to collapse
flash stock firmware... if it bootloops then you got bootloop issue. and you have bootloader unlocked that means warranty void... can you try relocking the bootlolader and make video.?

raptorddd said:
flash stock firmware... if it bootloops then you got bootloop issue. and you have bootloader unlocked that means warranty void... can you try relocking the bootlolader and make video.?
Click to expand...
Click to collapse
As I've said, I can recover it to the backup and successfully boot the cellphone. I bought it after this issue and it's serial number was not affected.
It is not "boot looping" also, it is just like this forever.
Again, I have reflashed the stock firmware many times and it works fine.
I think that it started after I've flashed a radio. How can I undo it?

bernardog said:
As I've said, I can recover it to the backup and successfully boot the cellphone. I bought it after this issue and it's serial number was not affected.
It is not "boot looping" also, it is just like this forever.
Again, I have reflashed the stock firmware many times and it works fine.
I think that it started after I've flashed a radio. How can I undo it?
Click to expand...
Click to collapse
i see then it must be something you flashed.. i have never been on twrp on G4.. i remeber on G2 not booting due to different bootstacks... i dont think thers different bootstacks on G4..... wouldnt flashing stock firmware fix it . if you do it LGUP refurbished?

I've tried to flash one of the roms based on the LG one and it keep showing errors for all LG apps.
I cannot open camera or even set a wifi.

bernardog said:
I've tried to flash one of the roms based on the LG one and it keep showing errors for all LG apps.
I cannot open camera or even set a wifi.
Click to expand...
Click to collapse
what version of android you have? were you on MM 20I did you update to 20o?
am just mentioning this as i heard people having problems updating from 20i to 20o. i think the fix is to refurbished LGUP with 20o if thats the case.. they said camera problems and no sound ...

raptorddd said:
i see then it must be something you flashed.. i have never been on twrp on G4.. i remeber on G2 not booting due to different bootstacks... i dont think thers different bootstacks on G4..... wouldnt flashing stock firmware fix it . if you do it LGUP refurbished?
Click to expand...
Click to collapse
same here. iam stuck too. cannot get it back started at all.

indianx said:
same here. iam stuck too. cannot get it back started at all.
Click to expand...
Click to collapse
does it shows al qualcomm 9008 brick.? i think there a fix for h811.

raptorddd said:
does it shows al qualcomm 9008 brick.? i think there a fix for h811.
Click to expand...
Click to collapse
what do you mean show qualcomm. Its just stuck after a while it reboots.

Same issue here. I updated h811 to latest cm13 nightly, booted fine for first time. Then I reflashed custom kernel and that's all she wrote. Keeps getting stuck at starting apps after in optimizes everything. The only thing works is flashing a stock image, then it boots. Flashing any CM yields same results, gets stuck. Even restoring a backup after I wipe entire phone, still gets stuck. Can't figure it out.

indianx said:
what do you mean show qualcomm. Its just stuck after a while it reboots.
Click to expand...
Click to collapse
if its hard brick it wont do a thing... when you connect phone what does it says in device manager.
/
---------- Post added at 09:30 PM ---------- Previous post was at 09:27 PM ----------
malahhaor said:
Same issue here. I updated h811 to latest cm13 nightly, booted fine for first time. Then I reflashed custom kernel and that's all she wrote. Keeps getting stuck at starting apps after in optimizes everything. The only thing works is flashing a stock image, then it boots. Flashing any CM yields same results, gets stuck. Even restoring a backup after I wipe entire phone, still gets stuck. Can't figure it out.
Click to expand...
Click to collapse
try another rom.. or build.. if you are on h811 i heard that beign on 20o works better ive never flashed cm or aosp on mine.. so if it flashes ok with stock and not cm . theres something worng bad download bad rom or update to 20o. note going into 20o you cant downgrade anymore..

I had the same problem. I resolved it by removing sim card and flash the rom again. It can be a sim card compatibility issue.

I Bricked and Unbricked my day one V30 in one night (How to not be completly screwed)

I picked up my UK V30 H930 yesterday all fine and saw that LG have unlocked the bootloader on my model so I went ahead and tried it along with trying the alpha TWRP build
So I thought id write about what went wrong and how I recovered from it.
I made the mistake of letting the phone auto update to 10v software verion before I did this. As I had 10f on before when I bought the phone.
I went to load in all the software needed to unlock the bootloader and proceeded to do so but in my haste of the user data being wiped taking a longer then I thought it would I unpluged the phone to try "fastboot flash unlock unlock.bin" again . No such luck already unlocked. It booted back in fine so I thought everything was ok but that was the moment I thought could have caused my entire night to be ruined.
I thought with the bootloader saying it was unlock it was now fine to flash TWRP on now so went to do that and discovered it would no longer boot into the rom anymore coming up with the LG V30 Logo and just staying put. Thought it must be my 10v software version messing it up. Ok ill try to flash a 10f stock kdz. After about an hour or so of 'Finding my feet' with the phones boot methods for download mode, Fastboot and recovery I found that twrp was being strange with mounting the phone tried otherways eventually got the phone talking to the pc by using uppercut with LGUP and having the phone in download mode and the port com channel in device mananger set to com 41. After about 4 tries of flashing KDZ's to the phone it would just come with a "erasing" circle and proceed to get stuck on boot logo again so I messed about with .dlls and tried to other methods. Still nothing.
Now I tried LG Bridge's "Update error recovery" and I was actually talking to the phone for the 1st time so i let it do its thing which took well over an hour to download the kdz file. "Fine just work please". it got to the updating stage at 5% and froze and the phone being in download mode hadnt done a thing. I tried again but still nothing. Eventually now at 6am and having been up all night I went to give up but I manged to get it on to fastboot mode and by chance came across "flashing lock_bootloader" tried and it and it locked tthe bootloader back up (this thing of LG saying it cannot be undone must be rubbish?) now before I tried anything I rebooted the phone . IT BOOTED! onto the fresh 10v KDZ i had installed on it but before anything I wanted to see if it would now run with a unlocked bootloader on its own with no TWRP installed. It works! Now i just need a method of rooting but im now ready at least.
Hope this helps anyone with simular troubles.

Also had some trouble yesterday after trying out some Magisk modules.
On reboot it sometimes got stuck in the LG V30 screen, and sometimes even the bootanimation came up, but it didnt finish the boot lol
Only installed and adblock btw, and tried the Xposed module. Uninstalled that again btw. Now only using Adblock.
Phone also seems to need Power + Vol- to force shutdown for me, not only Power like other phones. Also didnt manage to find a way to boot into recovery when the phone is off, only found a way to get into the factory reset screen ?
sadly i dont have a working sdcard currently (my 3 year old 128GB one is read only for some reason, atleast changes dont get applied), so ill wait for a new one to mess around more ^^
Also working on a LOS14.1 build atm (it compiled, but didnt adapt all parts of thr device tree yet, and no idea if i have all vendor files lol)

SGCMarkus said:
Also had some trouble yesterday after trying out some Magisk modules.
On reboot it sometimes got stuck in the LG V30 screen, and sometimes even the bootanimation came up, but it didnt finish the boot lol
Only installed and adblock btw, and tried the Xposed module. Uninstalled that again btw. Now only using Adblock.
Phone also seems to need Power + Vol- to force shutdown for me, not only Power like other phones. Also didnt manage to find a way to boot into recovery when the phone is off, only found a way to get into the factory reset screen
sadly i dont have a working sdcard currently (my 3 year old 128GB one is read only for some reason, atleast changes dont get applied), so ill wait for a new one to mess around more ^^
Also working on a LOS14.1 build atm (it compiled, but didnt adapt all parts of thr device tree yet, and no idea if i have all vendor files lol)
Click to expand...
Click to collapse
Ive just managed to get 10f on so ill retry flashing twrp now.
Are you sure your sdcard doesnt have a little read/write switch on it . Im sure i remember so of them used to have one.

Dreamxtreme said:
Ive just managed to get 10f on so ill retry flashing twrp now.
Are you sure your sdcard doesnt have a little read/write switch on it . Im sure i remember so of them used to have one.
Click to expand...
Click to collapse
nope, doesnt have one. Neither windows nor Linux fail at writing on it, or when deleting files, but as soon as I re-insert the SDCard all changes are reversed. Formatting doesnt work anymore, unknown error. Tried that in Windows, Linux and in the Phone (Androids formatting crashed, TWRPs produced an error after it timed out)

[Q] LG G4 H811 Stuck in Recovery (TWRP) Loop

I was running the latest version of TWRP and a rooted version of the LG G6 port. Everything was stable and worked fine. So I was ready to give it back to its owner who I had modded it for. I went into the settings menu of the phone and did a standard factory reset to remove my account that was logged in so I could test the phone out before giving it to the owner. well when it finished resetting and rebooted, its been stuck in a boot loop ever since.
Tried just clearing both Dalvik Cache and Cache, to no avail. Tried Reflashing the rom and starting over. Still nothing. Tried flashing a different rom. Still nothing.
So what else can I try? and also if its the only thing I can do, rest it all the way back to stock factory everything. How do I do that on this phone. What program do I need and what files. and whats the steps to complete the process.
Thank you in advance for all help that is given

i factory reset in twrp and turned on developers options after first boot then reflashed twrp i always forget backup lol or delete it or use kdz you flashed before anyway i can help i will if you still need

if you have tried to flash the same custom rom or another is still not working, flashes with the program "lg up", you will need a kdz file,and the corresponding drivers. if with that you can not watch this tutorial before doing anything.
if you have a backup made with twrp, it flashes again.
https://forum.xda-developers.com/g4/help/unbrick-lg-g4-brick-hs-usb-qdloader-t3542785
during this process you will have to disassemble the back of the phone, (plastic) you do not need to remove the motherboard completely from the phone, anyway if you can enter download mode try with lg up tool.
if you need help around here we are.

Well now in the process of trying to fix it. The phone bricked and will no longer turn on at all. Is there anyway to fix this ?

Silicon Knight said:
Well now in the process of trying to fix it. The phone bricked and will no longer turn on at all. Is there anyway to fix this ?
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Can you get into download mode?
Also, it's possible you have been hit by the bootloop