Hello all,
LG Optimus G Pro user here (LG-F240S). I recently rooted my phone, then used Gomdol's tool, which roots the phone and installs CWM recovery at the same time. I had initially thought that the application also unlocks the bootloader, but since then found out it doesn't.
Anyways, the first time rebooted into recovery, I flashed a ROM (specifically for F240S), which wasn't successful for some reason. Now, when I boot up the phone, it keeps saying "Secure Booting Error! Cause: boot certification verify"
I have tried everything, from the Volume down + Power + Home to erase everything and do the factory reset, but it doesn't work. I have also downloaded the stock firmware, and tried the KDZ_FW_UPD application to flash the stock firmware, which also did not work (Extract File Error). My last resort was using LGMobile Support Tool, but it keeps telling me to recharge my battery (my batter is currently recharged to 100%, and the USB is plugged in, so something is very wrong here).
I would really appreciate any help, It's been 3 days now without being able to use my phone and it sucks
Thanks!
J
Might wanna try this
ca12bon said:
Hello all,
LG Optimus G Pro user here (LG-F240S). I recently rooted my phone, then used Gomdol's tool, which roots the phone and installs CWM recovery at the same time. I had initially thought that the application also unlocks the bootloader, but since then found out it doesn't.
Anyways, the first time rebooted into recovery, I flashed a ROM (specifically for F240S), which wasn't successful for some reason. Now, when I boot up the phone, it keeps saying "Secure Booting Error! Cause: boot certification verify"
I have tried everything, from the Volume down + Power + Home to erase everything and do the factory reset, but it doesn't work. I have also downloaded the stock firmware, and tried the KDZ_FW_UPD application to flash the stock firmware, which also did not work (Extract File Error). My last resort was using LGMobile Support Tool, but it keeps telling me to recharge my battery (my batter is currently recharged to 100%, and the USB is plugged in, so something is very wrong here).
I would really appreciate any help, It's been 3 days now without being able to use my phone and it sucks
Thanks!
J
Click to expand...
Click to collapse
Hey mine did this i used the instruction in the thread below but i had the e980 so you might have to get your stock files but worth a try?
http://forum.xda-developers.com/showthread.php?t=2302660
Simply follow this method
http://forum.xda-developers.com/showthread.php?t=2396048
Hey man, I'm in the same boat, but I have the E988. What did you end up doing?
any idea?????
tase25 said:
Hey man, I'm in the same boat, but I have the E988. What did you end up doing?
Click to expand...
Click to collapse
i have the same problem here!! E975 when i dot the classic staff for custom rom i go to recovery i i see this in to my phone....boot certification verify
stock rom 4.4.2kk....what i mast do guys plz help
ca12bon said:
Hello all,
LG Optimus G Pro user here (LG-F240S). I recently rooted my phone, then used Gomdol's tool, which roots the phone and installs CWM recovery at the same time. I had initially thought that the application also unlocks the bootloader, but since then found out it doesn't.
Anyways, the first time rebooted into recovery, I flashed a ROM (specifically for F240S), which wasn't successful for some reason. Now, when I boot up the phone, it keeps saying "Secure Booting Error! Cause: boot certification verify"
I have tried everything, from the Volume down + Power + Home to erase everything and do the factory reset, but it doesn't work. I have also downloaded the stock firmware, and tried the KDZ_FW_UPD application to flash the stock firmware, which also did not work (Extract File Error). My last resort was using LGMobile Support Tool, but it keeps telling me to recharge my battery (my batter is currently recharged to 100%, and the USB is plugged in, so something is very wrong here).
F240S user here bro. I feel you
I would really appreciate any help, It's been 3 days now without being able to use my phone and it sucks
Thanks!
J
Click to expand...
Click to collapse
on your boot certification problem, I had that same problem before and made me panic for two days. I tried LG mobile support tool and worked for the first time. few weeks ago, I also encountered the same error on LG Mobile support tool (battery error,right?) I used I also used the KDZ_FW_UPD application and yes, extract error. but you know what the magical thing is? I found the G2 KDZ flasher from the G2 thread..
even if this was from G2 thread, it worked for my device.
here is the link and of course thanks to @hyelton for bringing this wonderful fix. now, I don't have to worry about bricking my phone again(except for hard bricking, of course).
http://forum.xda-developers.com/showthread.php?t=2432476
one more thing: make sure you download the KDZ. there is a thread here that links to that. but I think you have the right kdz now so just follow the steps. make sure you are in download mode press volume up and down (only the volume up and down. not the home or power) and then plug the cord.
guys, this happens when installing custom rom with lg stock rom in it and your device is not fully unlock. to lessen the hassle of worrying trying to reflash to the stock rom and downloading those huge files..just download any custom pure android rom , slimkat, cm11, etc then flash to your recovery..it would boot again without that error on boot certification. only that your on pure android rom but that's ok
nuvkyl20 said:
guys, this happens when installing custom rom with lg stock rom in it and your device is not fully unlock. to lessen the hassle of worrying trying to reflash to the stock rom and downloading those huge files..just download any custom pure android rom , slimkat, cm11, etc then flash to your recovery..it would boot again without that error on boot certification. only that your on pure android rom but that's ok
Click to expand...
Click to collapse
How do i flash the rom when i cant get into recovery? I have the same issue om my rooted g pad whit stockrom. I want to flash cyagenmod.
HELP PLEASE! My Lg G Pro e988 stays forever on this "Secure booting error! Cause: boot certification verify! Can't get in download mode. I have tryed all sort of combination keys but everytime this error pops up. My phone was on stock rom, then an official update started to download and ask me to reboot. After reboot this error!
HELP!
You should be able to get in download mode by following these steps. First take out the battery for atleast 5seconds, put it back in, then press and hold both vol + and vol - and within 2seconds plug in the usb cable, your computer should make the sound of a new device connected, when you hear that let go of the volume keys. The screen should say download mode now.
Sent from my LG-E980 using XDA Free mobile app
ivoh95 said:
You should be able to get in download mode by following these steps. First take out the battery for atleast 5seconds, put it back in, then press and hold both vol + and vol - and within 2seconds plug in the usb cable, your computer should make the sound of a new device connected, when you hear that let go of the volume keys. The screen should say download mode now.
Sent from my LG-E980 using XDA Free mobile app
Click to expand...
Click to collapse
It doesn't work! I did exactly what you say. No sound on pc, just that error on phone screen and no download mode
What should I do?
Thanks
Try booting into recovery, hold power and vol -. Or try power and vol +
Sent from my LG-E980 using XDA Free mobile app
ivoh95 said:
Try booting into recovery, hold power and vol -. Or try power and vol +
Sent from my LG-E980 using XDA Free mobile app
Click to expand...
Click to collapse
I have sent it to warranty and they told me that the phone was rooted, they sent me a picture with the back of the phone showing the imei and serial number and a front picture showing me that the phone has the app SuperSu.
They told me that the phone need a new motherboard that cost ~340 $.
Why do they need a new motherboard ? because the phone was not hard bricked.
I will get my device back.
Is possible to get it back with some modifications? I mean if they managed to boot it and see the SuperSu app.
I know to work with LG Flash Tool, so all I need is to put it to download mode.
All the above key combination didn't work. Power and vol- or power and vol+ ......
I will contact you again when i'll have my device.
Thanks!
yackmaan said:
I have sent it to warranty and they told me that the phone was rooted, they sent me a picture with the back of the phone showing the imei and serial number and a front picture showing me that the phone has the app SuperSu.
They told me that the phone need a new motherboard that cost ~340 $.
Why do they need a new motherboard ? because the phone was not hard bricked.
I will get my device back.
Is possible to get it back with some modifications? I mean if they managed to boot it and see the SuperSu app.
I know to work with LG Flash Tool, so all I need is to put it to download mode.
All the above key combination didn't work. Power and vol- or power and vol+ ......
I will contact you again when i'll have my device.
Thanks!
Click to expand...
Click to collapse
Any updates?
Long story with guys at warranty. I asked them to prove that the phone in those pictures is mine. From the picture showing my imei, yes is mine. But from the picture showing supersu app....they don't convince me. Every phone could have installed supersu app without being rooted. So i asked them to provide me another picture that will show the google account that was registered on phone and another with all my apps installed. They didn't send me such photos.
If they managed to revive my device and showing me there is a supersu app, that means they don't need to change the motherboard.
Am i right?
So i get my phone back working and they cut my warranty.
I tried vol+ and vol- and usb cable and download mode appeared.
Thankd!
yackmaan said:
Long story with guys at warranty. I asked them to prove that the phone in those pictures is mine. From the picture showing my imei, yes is mine. But from the picture showing supersu app....they don't convince me. Every phone could have installed supersu app without being rooted. So i asked them to provide me another picture that will show the google account that was registered on phone and another with all my apps installed. They didn't send me such photos.
If they managed to revive my device and showing me there is a supersu app, that means they don't need to change the motherboard.
Am i right?
So i get my phone back working and they cut my warranty.
I tried vol+ and vol- and usb cable and download mode appeared.
Thankd!
Click to expand...
Click to collapse
I smell something weird about LG. They probably put SuperSU on there or they got the wrong phone. Anyway i'm sure the community will help Don't lose faith/hope yet
About the warranty, its very complicated.
The store from which the phone was buyed, took it and send it to another warranty dealer authorized by LG, i guess, which was not named LG.
At last, I sold the phone, i own an lg g2 now and recently flash official lollipop.
Gladly and after some fails and always getting the secure boot certification error, i managed to access the download mode and with LG Flash Tool installed the stock .kdz on my LG L90 D405n.. thx for all the hints..
Before of this secure boot my e988 was working but no download mode. I've encountered this on a LG G2, so after some search i've found out that I must downgrade the bootloader. So, I rooted my device and installed autorec.apk from here http://forum.xda-developers.com/showthread.php?t=2715496 that fixes the " no download mode " .
I don't know how to skip the secure boot error. If someone managed please share with us!
Boot : Error Certification Verify
Hi. I am new to this thread although i had used this thread many times with issues i have had. There is this one issue im having that i can't seem to figure out which im usually good at doing by following forums or threads.
A couple weeks ago i had rooted my LG G Pad 7.0 V410 LTE tablet from AT&T. I had TWRP downloaded into it and i had flashed Candy5 it worked perfectly i just didn't like how it looked so i tryed to flash it back to original stock OS. But now when i boot my tablet up it goes to the LG screen and at the top left it says Boot : Error Certification Error. This has me dumbfounded on what i should do. when i connect the tablet to the computer nothing pops up no tablet connects to the computer. I tryed downloading the drivers and everything but nothing seemed to work. I need help with this issue please!!
I didn't know where else to post this issue due to being new!!!
Related
I have a E988 indian version which is stuck at boot with the "secure booting error cause : Boot certification verify",
I can get only into download mode and no recovery or can not boot into OS,
Earlier when i was in the situation i could get into download mode and use LG support tool to flash stock, But now i am getting battery low error..
My question is "Is there any way to recharge the phone if stuck at secure booting error or in download mode ?"
I tried offline KDZ flashing also but there also i was getting battery low error.
Thanks
If you can get to recovery. Mine charges while in recovery.
_________________
Beavers & Ducks!
esimon311 said:
If you can get to recovery. Mine charges while in recovery.
_________________
Beavers & Ducks!
Click to expand...
Click to collapse
i cant get into recovery also.Had installed CWM from freegee and then tried installing philz recovery and resulted in this condition ..
Any other options ?
Akhileshjj said:
I have a E988 indian version which is stuck at boot with the "secure booting error cause : Boot certification verify",
I can get only into download mode and no recovery or can not boot into OS,
Earlier when i was in the situation i could get into download mode and use LG support tool to flash stock, But now i am getting battery low error..
My question is "Is there any way to recharge the phone if stuck at secure booting error or in download mode ?"
I tried offline KDZ flashing also but there also i was getting battery low error.
Thanks
Click to expand...
Click to collapse
Try a factory reset by holding power and volume down at the same time. Press power button to confirm reset. If you do this, sometimes it will reboot you in to recovery, if not try it again and this time manually enter recovery.
uppon2 said:
Try a factory reset by holding power and volume down at the same time. Press power button to confirm reset. If you do this, sometimes it will reboot you in to recovery, if not try it again and this time manually enter recovery.
Click to expand...
Click to collapse
If i try to factory reset it initially asks for do you want to go ahead with factory reset and after i confirm the same old error of secure booting comes in... (factory reset does not happen), And i can not go into recovery mode directly using the volume up and power button...
Akhileshjj said:
If i try to factory reset it initially asks for do you want to go ahead with factory reset and after i confirm the same old error of secure booting comes in... (factory reset does not happen), And i can not go into recovery mode directly using the volume up and power button...
Click to expand...
Click to collapse
Keep trying it over and over. If it still doesn't work I have no idea what you could do. Can you explain how you got in to this problem?
uppon2 said:
Keep trying it over and over. If it still doesn't work I have no idea what you could do. Can you explain how you got in to this problem?
Click to expand...
Click to collapse
I was on CM11. then tried to restore to stock by using one of the CWM backup posted in XDA this landed me in continuous booting into recovery. Then tried to flash philz recovery and got into secure booting error...
now not able to get into recovery, not able to reset , only i am able to get into download mode but not able to use LG flash tool due to low battery error...
Akhileshjj said:
I was on CM11. then tried to restore to stock by using one of the CWM backup posted in XDA this landed me in continuous booting into recovery. Then tried to flash philz recovery and got into secure booting error...
now not able to get into recovery, not able to reset , only i am able to get into download mode but not able to use LG flash tool due to low battery error...
Click to expand...
Click to collapse
I hate that stupid low battery message. It's so dumb that they do not allow you to continue at your own risk. I have also had this problem going from AOSP back to stock. The only safe way to do it is using LG Flash tools first, then flash one of those stock zipped roms. Now it is too late for that. Do they sell your handset in the country you live in? If so, they can fix it in store in most cases. For me, they don't sell this phone in my country, I was just lucky enough to be able to continually try to factory reset and then my phone randomly booted in to recovery (don't know why or how, it just did). After that, I flashed lockified TWRP and CM11 again.
uppon2 said:
I hate that stupid low battery message. It's so dumb that they do not allow you to continue at your own risk. I have also had this problem going from AOSP back to stock. The only safe way to do it is using LG Flash tools first, then flash one of those stock zipped roms. Now it is too late for that. Do they sell your handset in the country you live in? If so, they can fix it in store in most cases. For me, they don't sell this phone in my country, I was just lucky enough to be able to continually try to factory reset and then my phone randomly booted in to recovery (don't know why or how, it just did). After that, I flashed lockified TWRP and CM11 again.
Click to expand...
Click to collapse
Hey, My G Pro is on Miui and everything works fine on it. I can enter recovery mode and all that. But, I want to revert back to stock and this low battery error keeps popping upon during offline flashing. I have seen your method for bypassing it, but I have not found a solution. Is there anything else I can possibly do? Thanks!
Shanewoodward said:
Hey, My G Pro is on Miui and everything works fine on it. I can enter recovery mode and all that. But, I want to revert back to stock and this low battery error keeps popping upon during offline flashing. I have seen your method for bypassing it, but I have not found a solution. Is there anything else I can possibly do? Thanks!
Click to expand...
Click to collapse
This is what I did by accident
The problem, as I see it, is once you root your phone and put the custom recovery on it, CWM or TWRP, it overwrites your factory recovery. I tried using a 10k flashable zip I have to get my phone back to stock. BUT once I tried to get the OTA update to 10P, as another member here pointed out, My phone boot looped. So my question is, is there a way to remove the custom recovery and restore the stock recovery WITHOUT having to go through the PITA process of using flash tools? If there is a way it would save people countless hours fixing their phones just to get an update.
I know many of you don't see this as an issue because your whole point IS flashing new Roms. But from everything I have seen of this phone it's more trouble than it's worth. This phone is so very picky it's ridiculous. I just wnna get the damn 4.4 update, have it rooted to remove bloat, and call it a day. But to answer the OP question, you always have the option of buying a battery station online and charging your battery that way.
Fixed low battery error
My friend managed to fix the low battery error. He tested the method on my phone and during flashing the error did not show up. Will be creating a new thread which fixes the low battery warning soon. Stay tuned !
Sent from my LG-E988 using xda app-developers app
Nice work. And that thread will definitely help allot of others with that issue.
TL;DR
Aside from all the technical stuff, and since the g pro has a removable battery(thank god for that) there are several chargers that you can use which charge the battery outside of your phone. Here where i live (honduras) I have seen quite a few and had one myself(used it to charge spare batteries).
I hope someone can help me.
I bought an LG Pro E-988 which is already rooted and have a nightly CM11 installed.
I saw the LG Flex Rom and tried to install. I hit an error (Status 7), so I restored my back up. It booted correctly and decided to install/run the LG Recovery and Freegee apps as I suspected that the error (Status 7) was because I didn't install the apps before the LG Flex ROM.
After I run FreeGee, I restarted in recovery and tried to install the ROM but still same error (Status 7). So I decided to restore my back up again, but this time around, the boot is not pushing through. I'm stuck in the LG Logo.
Has anyone experienced this before and maybe you can help me to fix my phone.
I admit I got a bit excited rooting and flashing custom ROMs again after 1 year of hiatus.
Thanks in advance!!
hd2_droid said:
I hope someone can help me.
I bought an LG Pro E-988 which is already rooted and have a nightly CM11 installed.
I saw the LG Flex Rom and tried to install. I hit an error (Status 7), so I restored my back up. It booted correctly and decided to install/run the LG Recovery and Freegee apps as I suspected that the error (Status 7) was because I didn't install the apps before the LG Flex ROM.
After I run FreeGee, I restarted in recovery and tried to install the ROM but still same error (Status 7). So I decided to restore my back up again, but this time around, the boot is not pushing through. I'm stuck in the LG Logo.
Has anyone experienced this before and maybe you can help me to fix my phone.
I admit I got a bit excited rooting and flashing custom ROMs again after 1 year of hiatus.
Thanks in advance!!
Click to expand...
Click to collapse
Nothing to worry about. Here is a pinned post where you can find all the information you need.
Just download your kdz from here and follow the steps from this post
Download kdz, install lg flashtool, lg drivers, after turning off your phone, press volume up and down together and connect your usb cable to get into download mode, then follow those pictures in that post to flash the kdz. You will be back to stock.
spirallingspiral said:
Nothing to worry about. Here is a pinned post where you can find all the information you need.
Just download your kdz from here and follow the steps from this post
Download kdz, install lg flashtool, lg drivers, after turning off your phone, press volume up and down together and connect your usb cable to get into download mode, then follow those pictures in that post to flash the kdz. You will be back to stock.
Click to expand...
Click to collapse
Thanks a lot man :good:! Although, I'm stuck with 'Connection error' in the FlashTool. Is this normal? I tried again and again more than 20 times but I'm getting the same connection error.
Also, earlier I was still able to go to recovery, but now even if I press the power button it goes straight to the download mode.
Hope you can help again.
You cant get out of download mode? did you try volume down and power button together for 5 secs? And btw what error are u getting on flash tool? its not detecting your phone? Did you install the mobile drivers?
spirallingspiral said:
You cant get out of download mode? did you try volume down and power button together for 5 secs? And btw what error are u getting on flash tool? its not detecting your phone? Did you install the mobile drivers?
Click to expand...
Click to collapse
The error was in the LG Mobile Support Tool (sorry to in the Flash tool). During the upgrading of the phone it always give the error - 'Connection to server failed. Try again in a moment'
Also, if I try to turn on the phone it will not boot but go straight to download mode.
hd2_droid said:
The error was in the LG Mobile Support Tool (sorry to in the Flash tool). During the upgrading of the phone it always give the error - 'Connection to server failed. Try again in a moment'
Also, if I try to turn on the phone it will not boot but go straight to download mode.
Click to expand...
Click to collapse
Did you remove the battery and put it back in? And it still goes to download mode? Try starting the phone pressing Volumedown+power key for sometime or you could try Volumeup+Homekey+Power to boot into recovery and try restoring backup or flashing some other rom and see if you can get out of boot. I really don't know why you are getting that connection problem. I got stuck at boot a couple of times and followed exactly what was given in that post and reverted back to stock. I guess some of the senior members will help you here. Meanwhile ill see if i can search a solution for that connection error, i haven't faced that yet so i really don't know the fix. There is a second TOT method given in that post, that might help.
spirallingspiral said:
Did you remove the battery and put it back in? And it still goes to download mode? Try starting the phone pressing Volumedown+power key for sometime or you could try Volumeup+Homekey+Power to boot into recovery and try restoring backup or flashing some other rom and see if you can get out of boot. I really don't know why you are getting that connection problem. I got stuck at boot a couple of times and followed exactly what was given in that post and reverted back to stock. I guess some of the senior members will help you here. Meanwhile ill see if i can search a solution for that connection error, i haven't faced that yet so i really don't know the fix. There is a second TOT method given in that post, that might help.
Click to expand...
Click to collapse
Yup, i tried removing the battery. Also tried different key combos to boot but it all goes to the download mode, with the small with box in the middle.
I also tried the option of going straight to the LG mobile support tool (not the LG Flash tool). But the same server connectiom error.
Thanks again for the help.
Hope other members can help me too.
Since I'm not able to do recovery using the KDZ file. Can I use the TOT file?
I have E988 Singapore version, but the last ROM installed was with a CM11. And in the Phone details it shows E980.
Will it work or will it just make things worst?
hd2_droid said:
Since I'm not able to do recovery using the KDZ file. Can I use the TOT file?
I have E988 Singapore version, but the last ROM installed was with a CM11. And in the Phone details it shows E980.
Will it work or will it just make things worst?
Click to expand...
Click to collapse
I haven't flashed using TOT method so i cant comment on that. I heard few people had trouble using flashtool on windows 8, are u you using windows 8? maybe try the kdz method again from a windows 7.
spirallingspiral said:
I haven't flashed using TOT method so i cant comment on that. I heard few people had trouble using flashtool on windows 8, are u you using windows 8? maybe try the kdz method again from a windows 7.
Click to expand...
Click to collapse
Yeah, I read that also. I used a windows 8 pc previously, that might be causong the connection error. I will try my old pc and hopefully it will work.
Thank you!
I have updated my Nexus 5x to 7.1.1 beta and after a day it powered off and I got the infamous red led during charging. I was not able to turn the phone on even after leaving the charger on for some days. I thought it is bricked and left it alone connected to my computer.
However today, out of nowhere Google logo popped up. It was bootlooping, but I was able to enter bootloader and original recovery. I wanted to flash it from bootloader, but was unable, because it was still oem locked. And I was not able to oem unlock, because I did not do the required part in the Developer Tools menu. I tried to adb sideload OTA in the original recovery, but sideloading stopped after uploading ~48% every time.
So I opted for the "VolumeUp + Power" mode flashing. Phone was recognized and I started flashing the appropriate TOT file. However at 33% on phone and 28% on the PC, progress stopped. And after a minute or so phone turned off. Currently it has no signs of life at all. Have I completely bricked it now? Is there a way to recover from interrupted "VolumeUp + Power" flashing mode?
EDIT: at first I though maybe the battery died during flashing. But interruption was not abrupt. First the progress slowed down to halt. And then after some time phone turned off.
It seems not all is lost. Have a blinking red light again after leaving it connected to computer for a day. Back to square one, but at least it is alive.
Your motherboard is dead.
And it is not your fault, mine also died while using beta 7.1 and I sent it RMA. They replaced for a new one.
But in my case i had unlocked bootloader, I flashed back 7.0 and it gave no results, still bootloop that's why I sent
Thanks for the info.
After leaving my phone with a clamp on a power button throughout the night (so the red light would flash continuously), I got it booting into "VolumeUp + Power" mode and this time I have successfully flashed the same TOT file via LGUp software. It was still bootlooping after flashing. Now I was able to enter into bootloader and recovery and this time sideloading the same previous file actually works. However it still bootloops.
Anyway, I tried to RMA it and after giving my IMEI to the Google rep, they said that they could not find it in their system after checking US and UK store records. Also tried calling LG warranty, but they do not know of my IMEI either. I got this phone from Swappa, so I left wondering where did the original owner of this phone got it from. He claimed that he got it as a present...
BlinK_ said:
Thanks for the info.
After leaving my phone with a clamp on a power button throughout the night (so the red light would flash continuously), I got it booting into "VolumeUp + Power" mode and this time I have successfully flashed the same TOT file via LGUp software. It was still bootlooping after flashing. Now I was able to enter into bootloader and recovery and this time sideloading the same previous file actually works. However it still bootloops.
Click to expand...
Click to collapse
out of curiosity, have you ever tried to flash custom recovery through the bootloader ? If you can, you might also wanna try to make a EFS backup, wipe all partition, then flash custom rom or near-stock rom like this one, just for the sake of testing.
anazhd said:
out of curiosity, have you ever tried to flash custom recovery through the bootloader ? If you can, you might also wanna try to make a EFS backup, wipe all partition, then flash custom rom or near-stock rom like this one, just for the sake of testing.
Click to expand...
Click to collapse
I wanted to flash custom recovery but was unable to do so, because device is still OEM locked. And I am unable to unlock it, because I did not do the confirmation in the Developer Options before device started to bootloop. Is there a way to flash custom recovery without this step in Developer Options?
BlinK_ said:
I wanted to flash custom recovery but was unable to do so, because device is still OEM locked. And I am unable to unlock it, because I did not do the confirmation in the Developer Options before device started to bootloop. Is there a way to flash custom recovery without this step in Developer Options?
Click to expand...
Click to collapse
For now, no way that I can think of. You could try to oem unlock it until it work, just cross your finger I guess?
I have some progress here. Since I was able to sideload various OTA images, I started doing that one by one and seeing if some of them would not bootloop. And after flashing 7.0.0 (NRD91N) from here (https://developers.google.com/android/ota) phone booted successfully and now is working. Will report if I get any problems.
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
Click to expand...
Click to collapse
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!
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)