[Q] LG G4 H811 Stuck in Recovery (TWRP) Loop - G4 Q&A, Help & Troubleshooting

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 ?
Click to expand...
Click to collapse
Can you get into download mode?
Also, it's possible you have been hit by the bootloop

Related

is this **** bricked??

its just sitting on the freaking LG screen... every time i vol dwn + pwr and double press power it goes normal but then cwm doesn't come up and it just restarts and hangs at LG again. i ****ing hate this phone can someone please help me out? why won't cwm load
can you describe exactly the process you took to port CWM into your phone? Let's see if something happened along the way to cause it to not work properly.
Also, is CWM the one not working, or did you flash a ROM on your phone and something went wrong, and you are trying to get to CWM to restore your phone but not getting anywhere with it?
aquariuz23 said:
can you describe exactly the process you took to port CWM into your phone? Let's see if something happened along the way to cause it to not work properly.
Also, is CWM the one not working, or did you flash a ROM on your phone and something went wrong, and you are trying to get to CWM to restore your phone but not getting anywhere with it?
Click to expand...
Click to collapse
followed the steps on the cwm thread. used terminal emulator. worked great. was working fine until now. i flashed kernels beta 2 and only wiped cache and dalvik and now nothing is working. no cwm to restore, can't even get to the at&t boot animation. this is a mystery.
mic.mayorga said:
followed the steps on the cwm thread. used terminal emulator. worked great. was working fine until now. i flashed kernels beta 2 and only wiped cache and dalvik and now nothing is working. no cwm to restore, can't even get to the at&t boot animation. this is a mystery.
Click to expand...
Click to collapse
Sorry to hear that. Unfortunately I can't help much at all since I haven't done either yet (CWM or Kernels/rom installations) so rather than making things worse for you, I'll leave it to the Pros here to help you. Im sure one of them will respond back soon enough.
Try this:
Disconnect the phone and pull out the battery.
Put battery back in and plug phone to a wall charger. Let it boot to the battery charging screen. Once there press and hold POWER + VOLDOWN
Depends on type of the problem, it helped me 9 out 10 times...
tried it at least 20 times now. just realized that i didn't format /system nor did i update cwm yesterday. probably the root of all these problems. I'm just gonna start fresh with the kdz. I'm on a mac though so its going to be a long night starting with boot camp.
I'm having the same problems...well kind of...
I followed all the instructions for CWM and everything went great. No real issues but had to reinstall the .img twice and then was perfect thereafter. Saw the beta 2 ROM and figured what the hey...downloaded and installed to SD Card. Used CWM/Nandroid to do a backup then installed the zip for the ROM from the sd card.
It took a matter of 10 seconds and said it was successful/done and restarted phone-got a boot loop on LG screen for about 15 minutes and finally did a battery pull-tried several times to get it into CWM with no luck and finally was able to get in-but had to plug it into the wall and wait for charging screen to show. Was able to restore and all was well until turning the phone off.
Turning off the phone now causes the phone to loop on the ATT screen-I can get into download mode and can get into CWM and restore and all is well until turning phone off.
I figured it just needs a fresh install so I've been trying to flash the kdz but the firmware updater keeps faulting and never makes it through the process...so I'm stuck...have all the files I need (I believe) and have everything in place...just can't get it back to normal.
Any ideas from here?
Thanks in advance!
Yeah, sometimes it could be quicker just start over and restore backups...
While you there, would you mind do this: Needed SystemUI.apk from SU640
[EDIT]
@fishscale28:
did you do kdz unbrick before? If not, then perhaps you are not doing it right...btw, kdz file for LU6200 didn't work for me.
Nope-never done a kdz unbrick before-I have the kdz v10i_00 for the 640. I have all the drivers installed, the parser deal installed, windows enabler program running and use the kdz updater to update the firmware. Is there something Im missing here? Seems like several people have gotten the updater to crash when trying to update the firmware...any ideas why?
---------- Post added at 05:51 AM ---------- Previous post was at 05:38 AM ----------
I went through a few of the threads and saw there was a .dll file to be deleted in the updater folders so I did that and now I can do absolutely nothing with the program. Only start and exit...am unable to select anything, view anything, get anything to function...
fishscale28 said:
Nope-never done a kdz unbrick before-I have the kdz v10i_00 for the 640. I have all the drivers installed, the parser deal installed, windows enabler program running and use the kdz updater to update the firmware. Is there something Im missing here? Seems like several people have gotten the updater to crash when trying to update the firmware...any ideas why?
---------- Post added at 05:51 AM ---------- Previous post was at 05:38 AM ----------
I went through a few of the threads and saw there was a .dll file to be deleted in the updater folders so I did that and now I can do absolutely nothing with the program. Only start and exit...am unable to select anything, view anything, get anything to function...
Click to expand...
Click to collapse
I installed from the kdz yesterday and didn't have to delete any files. I'm on Win 7 x64. The first time it ran it told me to restart my phone cause it didn't see it, but the second time it ran until my phone reboot and I killed the program. Be sure you have the KDZ_FW_UPD_EN with UpTestEX_mod2_marwin.exe in it. Hope this helps.
Thanks for your help. I did all that...again...I even deleted, reinstalled all the updater stuff, tried running as admin, tried running in compatibility mode, ran it after deleting the recommended .dll file and the option to do anything was gone, put it back in and was able to run everything fine and a little after extracting the kdz it would crash. I unplugged the phone and re-ran the proggy and it went through the check, noticed the phone wasn't hooked up and finished the check. Plug phone in, start process over and proggy crashes.
I don't get it-I would say its the wrong kdz but its not. I installed all the drivers and it still doesn't work. I've tried every combo of everything and the proggies keep crashing.
Now I was finally able to get into CWM to flash another ROM and was able to get one going-was able to boot into the os but same as before-once the phone is turned off it starts the boot loop. Now its even harder to get back to CWM but a restore works from there. Any ideas on why the boot image keeps reverting back to whatever was screwed up? Has to be something that happens once the system starts up again as it's after a restore and when the phone is turned off. Stumped and would love to be able to use my phone...It seems like flashing the kdz would be the sure fire way to get it done-are there options aside from the updaters that keep crashing?
Thanks in advance!
Maybe http://www.microsoft.com/windows/virtual-pc/ can help?
alright so i got to the 4% thing and my phone rebooted but it kept looping to the screen LG Optimus LTE bootscreen with the pink candy cane. thats it. i did vol dwn + pwr and got the android arrow and box with loading bar no text, then it rebooted back to the optimus lte screen. never got to the setup screen. tried the kdz again and my phone died. now when i plug it in i only get download mode... does it charge in download mode and why did it not get to the setup screen?!
fishscale28 said:
Thanks for your help. I did all that...again...I even deleted, reinstalled all the updater stuff, tried running as admin, tried running in compatibility mode, ran it after deleting the recommended .dll file and the option to do anything was gone, put it back in and was able to run everything fine and a little after extracting the kdz it would crash. I unplugged the phone and re-ran the proggy and it went through the check, noticed the phone wasn't hooked up and finished the check. Plug phone in, start process over and proggy crashes.
I don't get it-I would say its the wrong kdz but its not. I installed all the drivers and it still doesn't work. I've tried every combo of everything and the proggies keep crashing.
Now I was finally able to get into CWM to flash another ROM and was able to get one going-was able to boot into the os but same as before-once the phone is turned off it starts the boot loop. Now its even harder to get back to CWM but a restore works from there. Any ideas on why the boot image keeps reverting back to whatever was screwed up? Has to be something that happens once the system starts up again as it's after a restore and when the phone is turned off. Stumped and would love to be able to use my phone...It seems like flashing the kdz would be the sure fire way to get it done-are there options aside from the updaters that keep crashing?
Thanks in advance!
Click to expand...
Click to collapse
Even after running the kdz, my phone still does that after installing CWM. I don't know if it's something with my ROM or something with CWM, but if you can't get into CWM you probably don't need to run the kdz. I couldn't get into CWM anymore when I ran it.
So you're saying you go into the boot loop after turning off your phone even after unbricking?
I don't get it-now I can't get into recovery and it keeps up with the boot loop. I've tried running on the virtual PC/XP deal and it doesn't crash but now it doesn't even see the phone...reinstalled all the drivers, etc. and still no luck. Is there anyway to get the kdz installed without this updater?
fishscale28 said:
So you're saying you go into the boot loop after turning off your phone even after unbricking?
Click to expand...
Click to collapse
Yes. I don't think that was happening until I put CWM on. But I can live with it until the issue is solved. I don't think I'm the only one having it.

[Q] Factory Reset Bootloop

Hello, all. I've had this problem for about a year, but I just kind of put the KF away once I got it replaced instead of fixing it.
Last year, I put my KF into a softbrick, factory reset bootloop. On boot, the KF warns:
Your Kindle has detected a problem and must clear App storage. The recovery process will erase some apps and data from your device.
Click to expand...
Click to collapse
The rest is the generic factory reset info. Press power to proceed. This looks like it goes through the process, restarts, and just boots back up into this message. Thus, bootloop. I've tried looking up others with the same problem, but no one has had the same one I mention. I don't have a custom bootloader or TWRP.
As for what caused this, if i can remember correctly I was having trouble with google apps permissions and changed a folder in /system/ to something else. The fire freaked out and I rebooted it. The above has happened ever since. So the only modification is being rooted. I've tried getting access to adb, but it hasn't listed the device. Maybe I installed the drivers wrong or something, but I didn't mess with it for long because I don't like being in Windows if I can help it.
Any help would be greatly appreciated. Not in too big of a hurry, though, as I have a Nexus 7 currently. ^.^
Get a factory cable to force it into fastboot so you can flash a new bootloader and twrp , then flash a new rom. You can also attempt to race it to factory reset and reset it some have success.
Thepooch said:
Get a factory cable to force it into fastboot so you can flash a new bootloader and twrp , then flash a new rom. You can also attempt to race it to factory reset and reset it some have success.
Click to expand...
Click to collapse
I knew about fastboot, I should have mentioned. I just don't have the money to spend on one currently. What do you mean by attempt to race it to factory reset and reset it?
Just what I said you have just a little time to race to settings and factory reset it before it fc`s and shuts down some people manage to pull it off.

Bootloops After ODIN back to Stock Firmware

Hi guys,
I have the t-mobile s6 edge
After messing around with my device last night and this morning, I decided to go back to stock for a bit.
I have ODIN 3.10.6. I went into download mode on my phone. extracted the stock firmware from this thread: http://forum.xda-developers.com/galaxy-s6-edge/general/sm-g925f-s6-firmware-thread-t3078841
loaded the "G925TUVU1AOCG_G925TTMB1AOCG_G925TUVU1AOCG_HOME.tar.md5" file into the ap box for odin
connected my phone to computer, odin recognized it. hit start. ran successfully. rebooted, android guy came up briefly and said installing system update, then it changed to "Erasing..." then it rebooted again
now it's just bootloops forever after the tmobile screen. I can boot to recovery and it says installing system update each time I boot to recovery, but selecting reboot system there shows a no command error. force the phone to power off... power on again to bootloops.
tried to go into download mode again and reflash everything through odin, same issue!
I started last night by rooting using chainfire, then installing TWRPv2, then I flashed the 5.1.1 ROM available from @eousphoros (sorry for the tag, just thought you might want to be apprised of the issues in getting back to stock after using the 5.1.1 ROM).
with 5.1.1 loaded, smart switch didn't recognize the phone for a reset so I decided to go with the ODIN method and now i'm in bootloop city
any help would be greatly appreciated
kswa1987 said:
Hi guys,
I have the t-mobile s6 edge
After messing around with my device last night and this morning, I decided to go back to stock for a bit.
I have ODIN 3.10.6. I went into download mode on my phone. extracted the stock firmware from this thread: http://forum.xda-developers.com/galaxy-s6-edge/general/sm-g925f-s6-firmware-thread-t3078841
loaded the "G925TUVU1AOCG_G925TTMB1AOCG_G925TUVU1AOCG_HOME.tar.md5" file into the ap box for odin
connected my phone to computer, odin recognized it. hit start. ran successfully. rebooted, android guy came up briefly and said installing system update, then it changed to "Erasing..." then it rebooted again
now it's just bootloops forever after the tmobile screen. I can boot to recovery and it says installing system update each time I boot to recovery, but selecting reboot system there shows a no command error. force the phone to power off... power on again to bootloops.
tried to go into download mode again and reflash everything through odin, same issue!
I started last night by rooting using chainfire, then installing TWRPv2, then I flashed the 5.1.1 ROM available from @eousphoros (sorry for the tag, just thought you might want to be apprised of the issues in getting back to stock after using the 5.1.1 ROM).
with 5.1.1 loaded, smart switch didn't recognize the phone for a reset so I decided to go with the ODIN method and now i'm in bootloop city
any help would be greatly appreciated
Click to expand...
Click to collapse
You probably need to do a factory reset
In the future you should make a full backup before installing a rom
kswa1987 said:
Hi guys,
I have the t-mobile s6 edge
After messing around with my device last night and this morning, I decided to go back to stock for a bit.
I have ODIN 3.10.6. I went into download mode on my phone. extracted the stock firmware from this thread: http://forum.xda-developers.com/galaxy-s6-edge/general/sm-g925f-s6-firmware-thread-t3078841
loaded the "G925TUVU1AOCG_G925TTMB1AOCG_G925TUVU1AOCG_HOME.tar.md5" file into the ap box for odin
connected my phone to computer, odin recognized it. hit start. ran successfully. rebooted, android guy came up briefly and said installing system update, then it changed to "Erasing..." then it rebooted again
now it's just bootloops forever after the tmobile screen. I can boot to recovery and it says installing system update each time I boot to recovery, but selecting reboot system there shows a no command error. force the phone to power off... power on again to bootloops.
tried to go into download mode again and reflash everything through odin, same issue!
I started last night by rooting using chainfire, then installing TWRPv2, then I flashed the 5.1.1 ROM available from @eousphoros (sorry for the tag, just thought you might want to be apprised of the issues in getting back to stock after using the 5.1.1 ROM).
with 5.1.1 loaded, smart switch didn't recognize the phone for a reset so I decided to go with the ODIN method and now i'm in bootloop city
any help would be greatly appreciated
Click to expand...
Click to collapse
AHH!! Sorry to have made this post... here's what I did to get it actually boot:
reflahed the stock firmware through odin again, tried to reboot, it failed, obviously. rebooted to recovery, factory reset in recovery, power down option in recovery, then turned the phone on again and it magically worked!
hopefully this post will help someone who encountered the same issue
eousphoros said:
You probably need to do a factory reset
In the future you should make a full backup before installing a rom
Click to expand...
Click to collapse
thank you so much for the quick reply, I ended up figuring out the solution while you were typing. sorry to pull you away from other tasks. I have several backups saved to my PC but thank you for the reminder!! :laugh::laugh:
kswa1987 said:
AHH!! Sorry to have made this post... here's what I did to get it actually boot:
reflahed the stock firmware through odin again, tried to reboot, it failed, obviously. rebooted to recovery, factory reset in recovery, power down option in recovery, then turned the phone on again and it magically worked!
hopefully this post will help someone who encountered the same issue
Click to expand...
Click to collapse
I had the same excat same thing happen when flashing this via Odin. I didnt need to Odin stock twice though . I just booted stock recovery and did a factory reset. After that I went ahead an powered down and rebooted . All good now
How long did you have to wait in the stock recovery to get past the "installing system update" screen? Mine just sits there and I'm unable to view other options in recovery.
EDIT for noobs (like me): wait 30 seconds on the "installing system update" screen.
I'm still stuck in boot loop
Im in the same exact situation , but I'm still stuck in boot loop. I followed your restore instructions and nothing. Please help.
Creel711 said:
Im in the same exact situation , but I'm still stuck in boot loop. I followed your restore instructions and nothing. Please help.
Click to expand...
Click to collapse
Looks here, may apply to your case. http://forum.xda-developers.com/showthread.php?p=63226466
Pp.
I initially used odin to flash OI1 update, after a rom I was using caused problems and I got bootloop. It changed bootloader value to b:3 and I'm unable to downgrade now so I used smart switch which didn't recognize device so used emergency recovery and still bootloop. I have factory reset and wipe cache multiple times along with adb side load and individual flashes of bootloader, modem, kernel, flashed custom kernel and twrp to access fix permissions and to mount partitions with advanced wipe etc and still wont boot past logo. Also during one fix attempt phone said can't mount system.. Idk I'm not understanding where the problem is .everything says successful but I'm still in bootloop. Please help. I've spent hours everyday for the past week searching & trying different things that seem might help so open to any suggestions.
Problem with Samsung Galaxy S4 Mini GT-I9195
Hi everyone
I'm new to the whole ROM flashing and using Odin. I had a bootloop problem and recovery mode showed all the options but has a green android man laying down with red icon above him and No Command below the android man. Tried the factory wipe and cache wipe but it gives some red writing with the word failed in the coding and the word error under the android man. Tried to flash a stock ROM from sammobile using Odin. Odin gives a pass but the same problems persist. Can someone please help?
any solution, i have this problem to? only bootloop, nothing else. Updatet bootloader with 4up
kswa1987 said:
Hi guys,
I have the t-mobile s6 edge
After messing around with my device last night and this morning, I decided to go back to stock for a bit.
I have ODIN 3.10.6. I went into download mode on my phone. extracted the stock firmware from this thread: http://forum.xda-developers.com/galaxy-s6-edge/general/sm-g925f-s6-firmware-thread-t3078841
loaded the "G925TUVU1AOCG_G925TTMB1AOCG_G925TUVU1AOCG_HOME.tar.md5" file into the ap box for odin
connected my phone to computer, odin recognized it. hit start. ran successfully. rebooted, android guy came up briefly and said installing system update, then it changed to "Erasing..." then it rebooted again
now it's just bootloops forever after the tmobile screen. I can boot to recovery and it says installing system update each time I boot to recovery, but selecting reboot system there shows a no command error. force the phone to power off... power on again to bootloops.
tried to go into download mode again and reflash everything through odin, same issue!
I started last night by rooting using chainfire, then installing TWRPv2, then I flashed the 5.1.1 ROM available from @eousphoros (sorry for the tag, just thought you might want to be apprised of the issues in getting back to stock after using the 5.1.1 ROM).
with 5.1.1 loaded, smart switch didn't recognize the phone for a reset so I decided to go with the ODIN method and now i'm in bootloop city
any help would be greatly appreciated
Click to expand...
Click to collapse
had the same issue ... did a factory wipe...(had lineage os 14 installed with gapps 7.1.1) flashed stock rom using odin(success) . stuck in bootloop(samsung logo fades in and out) pleaase help (sm-g900H)
Very usefull post, same issue, solved trough recovery->wipedata/factoryreset. Thanks!!!!
my s6 was freezing and restarting again and again, I reinstalled the firmware for odin and then it didn't encounter any problem for a whole day but now i have the same problem again - freezing and restarting
any help would be appreciated
I am already done with factory reset and wiping cache partition but still nothing turnout to be helpful
Hi Please help me.
I did everything that mentioned but no succes at all. Any new suggestion?
Btw my phone passing ODIN and stuck in "installing system updates then erasing"
hello
i need downgred g925t frome androide 7 to 6 or 5.1.1
can anyone help me
im flashed phone whit dis frimwer from anroide 7 G925TUVS6FRC1_G925TTMB6FRC1_TMB
im dawnloaded this frimwer 4Files-G925TTMB3EPD1-6.0.1-By-NoLoGiG but not work or not flashed have error

After successful (?) upgrade to MM, can't boot past Verizon screen.

I was on 13B rooted, then flashed the stock system to return to unroot status. Everything worked fine. Plugged into computer and Verizon Upgrade Assistant suggested upgrade to 13C, so I bit. After a 4 hour (!) download of a 2 Gb file, the upgrade install proceeded without incident, and resulted in a successful completion according to the Assistant. Phone started booting and the Upgrade Assistant re-read the phone as being on 13C, but, the phone stalls and refuses to boot past the Verizon red splash screen. I have pulled battery and tried numerous times to boot, with no luck. It just sticks at the same spot.
Any suggestions? I'm nervous about re-flashing 13 B for fear of bricking it, so perhaps flash 13C kdz?
Thanks in advance for any help.
I have now tried flashing the 13C kdz unsuccessfully a number of times. I verified the checksum on the downloaded kdz file, and attempted to flash it on three separate computers where I had successfully flashed the G4 in the past. Each time that I tried flashing the 13C it reads: "Required Information cannot be found. Contact the system administrator."
I am still stuck here. Even in the flash tool, the phone is read as having 13C on it, but it still will not boot past the Verizon splash screen. Any thoughts on whether I should dare try flashing 13B, or would I end up with even more of a brick then I have now?
Thanks again.
DO NOT FLASH 13B!
Isn't Android 6 24c?
I got stuck on the Verizon screen, but a wipe fixed it at that point.
fr4nk1yn said:
DO NOT FLASH 13B!
Isn't Android 6*?
I got stuck on the Verizon screen, but a wipe fixed it at that point.
Click to expand...
Click to collapse
Thanks, and you are correct on the number, MM is 24C.
May I ask, how were you able to wipe when stuck on the Verizon splash screen? I would love to do that if possible.
Thanks again.
Katmeat said:
Thanks, and you are correct on the number, MM is 24C.
May I ask, how were you able to wipe when stuck on the Verizon splash screen? I would love to do that if possible.
Thanks again.
Click to expand...
Click to collapse
Hold volume down and power on if I remember correctly to put the phone in recovery mode. From there you can choose to do a wipe/factory reset.
I had issues with way long boot times, the wipe fixed that, but then apps kept FC. I ended up downloading the KDZ file and used the flash tool to reflash 24C. Everything is stellar now.
Thank you so much, mikeewhite! I followed your instructions and they worked perfectly, so I am back up and running. You are the reason that I love this list so much, as there are so many people like you generous with their time and advice.

LG G4 H815 Euro - Troubles flashing stock ROM

Hello to all of you,
Thanks in advance for any help you can provide.
I bought second hand a LG G4 H815 with CyanogenMod 14 already installed on it.
Everything was fine until I installed my Ebanking apps, that would not function with an unlocked bootloader. I needed to return to a clean factory safe state...
It was the second time I flashed a rom in my whole life, the first one was a Galaxy S plus years ago.
I followed all the instructions for the KDZ flash in this tutorial but I stumbled upon a "Upgrade stopped due to error" in LG flash tool.
I retried 3 or 4 times but with no luck. I verified that the ROM was correct for my model and it was. European and all...
I tried LGUP but my phone is unknown ( at least it's detected)...
I read some posts and told myself "I probably have messed up something, let's try it again with a fresh thing"... I clicked on the factory reset button and carried on.
There the phone booted on TWRP (That i didn't know existed before this). As I explored the menus with a TWRP google search on the computer, I began to realize that the factory reset was maybe a bad thing to do with a custom rom. I tried to reboot but I always end up booting on TWRP.
I re-tried to flash in download mode, but with always the "Upgrade stopped due to error".
I also tried to flash directly from TWRP a stock rom. Didn't work.
I was beginning to lose it and tried to flash the CM14 version I had before, juste to have a working phone again, but even this didn't work... I'm stuck with a TWRP phone
I need some help there...
FamousCarpet said:
Hello to all of you,
Thanks in advance for any help you can provide.
I bought second hand a LG G4 H815 with CyanogenMod 14 already installed on it.
Everything was fine until I installed my Ebanking apps, that would not function with an unlocked bootloader. I needed to return to a clean factory safe state...
It was the second time I flashed a rom in my whole life, the first one was a Galaxy S plus years ago.
I followed all the instructions for the KDZ flash in this tutorial but I stumbled upon a "Upgrade stopped due to error" in LG flash tool.
I retried 3 or 4 times but with no luck. I verified that the ROM was correct for my model and it was. European and all...
I tried LGUP but my phone is unknown ( at least it's detected)...
I read some posts and told myself "I probably have messed up something, let's try it again with a fresh thing"... I clicked on the factory reset button and carried on.
There the phone booted on TWRP (That i didn't know existed before this). As I explored the menus with a TWRP google search on the computer, I began to realize that the factory reset was maybe a bad thing to do with a custom rom. I tried to reboot but I always end up booting on TWRP.
I re-tried to flash in download mode, but with always the "Upgrade stopped due to error".
I also tried to flash directly from TWRP a stock rom. Didn't work.
I was beginning to lose it and tried to flash the CM14 version I had before, juste to have a working phone again, but even this didn't work... I'm stuck with a TWRP phone
I need some help there...
Click to expand...
Click to collapse
uninstall any drive for g4 from pc and reinstall again and lgup. now reboot phone to download mode when lgup is open first check upgrade opsion and when open kdz check refurbish opsion and start. good luck
Thank you for your answer
Still no luck
Uninstalled drivers
Rebooted PC
Reinstalled the drivers
Still unknown device
The best way to flash stock image is to use official LG Bridge app. Download it, turn off your phone, connect it to PC while holding volume up button - phone will go into download mode. Then there is option for software restore in LG Bridge but i won't tell u where exactly. If it won't work i would try on another PC. If it won't work maybe you would be able to flash stock image trough send_command but i won't help you with it.
FamousCarpet said:
Thank you for your answer
Still no luck
Uninstalled drivers
Rebooted PC
Reinstalled the drivers
Still unknown device
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open lgup torn off the phone press volume up insert usb cable wait to see download mode on phone release up button and see if everything go fine
Thank you a lot Avantu, the LG Bridge did the trick! I now have a factory rom!

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