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I have read all of the topics on here and the rest of the internet and so far nothing seems to work, I soft-bricked my phone, I can boot into download and recovery fine, but even if i flash a old backup i cant get past the bootloop, Ive bricked my phone many times before and always recovered from it, but now if I run the LG Flash Tools I get a "failedPreviousLoad()" error, Ive even followed guides that i knew worked, is there something i am over looking? this is my only phone so i cannot afford to lose it, odd that it works halfway though. any help would be greatly appreciated
try uninstalling lg flash tool and removing all files associated with it (DO NOT GET RID OF THE TOT FILE)
then make sure there are no registery errors, after which, reboot your computer and reinstall the software like before.
jcwxguy said:
try uninstalling lg flash tool and removing all files associated with it (DO NOT GET RID OF THE TOT FILE)
then make sure there are no registery errors, after which, reboot your computer and reinstall the software like before.
Click to expand...
Click to collapse
does the software leave any registry keys behind when uninstalled? i cant find any
EDIT: just tried after a reinstall and still same error, i took a screenshot, but i cant upload it here
i have even tried the support tools, but those require a kdz file and i read that the ls980 doesnt have one of those
Hello everyone
So, this is my problem here, I got my G4 last week, rooted it to debloat, followed the instructions I found here on XDA, and it was working as a charm.
The problem came when I wanted to change the (micro) SD card to another phone, I took the back cover off, took out the SD card, and a warning message about the SD card might be damaged came on screen.
So I turned off the G4, after I was ready to put back the SD, tried to power on the phone again and the error message appeared.
"Security Error, Auth Fail #9" and then it just won't boot.
Hope anyone can help me.
I was on stock Telcel Firmware, had rebooted the phone several times before with no issues so far.
Never mind, I just reflashed stock firmware found
here: http://devtester.ro/projects/lg-firmwares/
then followed this steps
Tutorial: http://devtester.ro/projects/lg-firmwares/install.php
So, after a clean flash, it booted again, as Iv'e had it for just one week, nothing was lost.
Hope this helps anyone else facing this strange problem.
By the way, if anyone know something about the possible cause for this malfunction, I woud really appreciate you sharing info.
Cheers!
i Have had the same problem i was woundering if you could please walk me through the steps on how you fixed yours.
I recently just bought a new LG G Stylo with MetroPCS. this is my first time being with android so i took it upon my self to root the phone and see what all i could do with it. Everything worked fine for a couple of days then i tried to reset my phone and when it tried to come back on the lg logo cane up and it said Authentication fail #9. I try to factory reset the phone but it goes back to the same screen. I can not put the phone in download mode and my computer does not detect that there is a phone there. If there is anyone who can help me please it will be greatly appreciated.
joyousfrank said:
Never mind, I just reflashed stock firmware found
here: http://devtester.ro/projects/lg-firmwares/
then followed this steps
Tutorial: http://devtester.ro/projects/lg-firmwares/install.php
So, after a clean flash, it booted again, as Iv'e had it for just one week, nothing was lost.
Hope this helps anyone else facing this strange problem.
By the way, if anyone know something about the possible cause for this malfunction, I woud really appreciate you sharing info.
Cheers!
Click to expand...
Click to collapse
How can be LG G4 H815P be rooted, have read many tutorials, but no one is for the variant "P" (Telcel).
Thanks!!!
Hello!
Well, I found out the source of the problem on "error 9".
As it happened again a couple days after posting the thread.
In my case, when I uninstalled LG apps, such as music and video apks, "error 9" would come up on next boot.
Follow the tutorials, the most important thing is to have the right version of SW to your phone.
Also, I had to download LG bridge, then a pop-up came telling that drivers for the phone should be updated, I just accepted the update and then my phone was detected on my PC .
If you encounter a problem, please provide me a little more info (with caps if possible).
Hope to help you.
Enviado desde mi LG-H815P
@joyousfrank. I've just been de-bloating my phone and managed to get a Security Error problem and was hoping to use this method to get the thing live again. Trouble is that Google is blocking the LGFlashtool download link. Any chance you have another link or could maybe upload a copy of the tool somewhere? Cheers
joyousfrank said:
Hello!
Well, I found out the source of the problem on "error 9".
As it happened again a couple days after posting the thread.
In my case, when I uninstalled LG apps, such as music and video apks, "error 9" would come up on next boot.
Follow the tutorials, the most important thing is to have the right version of SW to your phone.
Enviado desde mi LG-H815P
Click to expand...
Click to collapse
Hi, my version of the G4 is H815P too (CLARO BR), and I want to know wich tutorials you're referring to and if you encounter a method to surpass this issue when trying to remove/debloat the phone...
wadken1 said:
@joyousfrank. I've just been de-bloating my phone and managed to get a Security Error problem and was hoping to use this method to get the thing live again. Trouble is that Google is blocking the LGFlashtool download link. Any chance you have another link or could maybe upload a copy of the tool somewhere? Cheers
Click to expand...
Click to collapse
Sorry I couldn't help you, but it's great to know that you have solved your problem.
depechemodem said:
How can be LG G4 H815P be rooted, have read many tutorials, but no one is for the variant "P" (Telcel).
Thanks!!!
Click to expand...
Click to collapse
I used this thread as a guide
http://forum.xda-developers.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765
(Follow the steps for International H815 10c Version)
This is the rooted image I used http://forum.xda-developers.com/g4/...on-root-lg-t3164765/post62251256#post62251256
After you download it just unzip it, and rename the .img file to "system.rooted.H81510c-EU"
The file must be system.rooted.H81510c-EU.img
Hope to help.
Cheers!
hralm said:
Hi, my version of the G4 is H815P too (CLARO BR), and I want to know wich tutorials you're referring to and if you encounter a method to surpass this issue when trying to remove/debloat the phone...
Click to expand...
Click to collapse
Hello!
The first thing to do, is to find the right SW foy your phone model (and carrier) as I read some problems when flashing other different than stock.
Look up here http://devtester.ro/projects/lg-firmwares/download.php there's where I found the SW for Telcel. Just input your IMEI on that page and it will give you a download link.
Then, follow this steps http://devtester.ro/projects/lg-firmwares/install.php
It's important to tell you that my phone wasn't detected by my PC until I downloaded LG Bridge as it comes with the latest drivers, so I recommend you to do this if you face the "not-detecting phone PC".
And for last, I suppose that there should be thread with a list of safe to uninstall apps (this is my first LG so not totally sure).
As there's enough room for apps on the phone, I just ended freezing annoying apps with Link2SD to avoid having the "Authentcation Error #9" problem.
Hope to help you, cheers!
FLASHGOTHOPS said:
i Have had the same problem i was woundering if you could please walk me through the steps on how you fixed yours.
I recently just bought a new LG G Stylo with MetroPCS. this is my first time being with android so i took it upon my self to root the phone and see what all i could do with it. Everything worked fine for a couple of days then i tried to reset my phone and when it tried to come back on the lg logo cane up and it said Authentication fail #9. I try to factory reset the phone but it goes back to the same screen. I can not put the phone in download mode and my computer does not detect that there is a phone there. If there is anyone who can help me please it will be greatly appreciated.
Click to expand...
Click to collapse
Hope it's not too late.
The first thing to do, is to find the right SW foy your phone model (and carrier) as I read some problems when flashing other different than stock. (This is important as I've only done this with G4, so you're going to do the search for the right SW)
You can look up here http://devtester.ro/projects/lg-firmwares/download.php there's where I found the SW for H815P (Telcel). Just input your IMEI on that page and hopely it will give you a download link.
Then, follow this steps http://devtester.ro/projects/lg-firmwares/install.php
It's important to tell you that my phone wasn't detected by my PC until I downloaded LG Bridge as it comes with the latest drivers, so I recommend you to do this if you face the "not-detecting phone PC".
Cheers!
I rooted my G3 using iRoot while having Lollipop 5.0 installed. I have just received my update from LG for Marshmallow. When I tried to do the update it told me that my phone was rooted so I can't get it. I un-rooted my phone, and tried to put everything back to the way it was, but no go. They still said my phone is rooted. The problem is that I can't do a hard factory reset. I get a message "secure booting error ...".
So after reading up on it a bit, I realized I needed to flash a stock ROM through my computer. I downloaded all that I needed, and installed LG Flashing Tool 1.8.1.1023 on my Windows 10 computer, following all the directions exactly (including replacing MegaLock.dll). The program installed, but when I wanted to run it, it told me that it couldn't find MegaLock.dll, and then asked for an ID and Password. I uninstalled it and reinstalled it many times using slightly different versions, but I had the exact same problem each time. Then I decided to try and install it on a Windows 7 machine, and it worked. So it seems that something is keeping it from working on the Windows 10 computer. Can anyone help me with this, or maybe there is another way? Maybe the dll file has to be placed somewhere else? Maybe a different MegaLock.dllis needed that is compatible with Win10? Maybe a different program? I have no idea. Any and all help would be appreciated.
Thank you.
http://forum.xda-developers.com/lg-g3/help/answer-windows-8-8-1-detecting-lollipop-t2967574
what varient do u have
TheMadScientist420 said:
http://forum.xda-developers.com/lg-g3/help/answer-windows-8-8-1-detecting-lollipop-t2967574
what varient do u have
Click to expand...
Click to collapse
My computer recognizes the phone, that's not the problem. It's purely the program, I can't run it. It doesn't open.
i see try older versions of the program try googling lg flash tool do you have the megalock.dll
---------- Post added at 03:45 PM ---------- Previous post was at 03:42 PM ----------
im sorry i just really read in full i had the issue to when i upgraded to win 10 i ended up going back to win 7 too things just wernt going well with 10 also had trouble with flash tool always failing never restoreing i was a pain i thought i messed my phone up and it ended up bein win 10 my pc has the secure boot and crap on it it even makes it a pain to dual boot ubuntu up so i just run 2 machines on my tv
A Possible Solution
alwaysdiving said:
I rooted my G3 using iRoot while having Lollipop 5.0 installed. I have just received my update from LG for Marshmallow. When I tried to do the update it told me that my phone was rooted so I can't get it. I un-rooted my phone, and tried to put everything back to the way it was, but no go. They still said my phone is rooted. The problem is that I can't do a hard factory reset. I get a message "secure booting error ...".
So after reading up on it a bit, I realized I needed to flash a stock ROM through my computer. I downloaded all that I needed, and installed LG Flashing Tool 1.8.1.1023 on my Windows 10 computer, following all the directions exactly (including replacing MegaLock.dll). The program installed, but when I wanted to run it, it told me that it couldn't find MegaLock.dll, and then asked for an ID and Password. I uninstalled it and reinstalled it many times using slightly different versions, but I had the exact same problem each time. Then I decided to try and install it on a Windows 7 machine, and it worked. So it seems that something is keeping it from working on the Windows 10 computer. Can anyone help me with this, or maybe there is another way? Maybe the dll file has to be placed somewhere else? Maybe a different MegaLock.dllis needed that is compatible with Win10? Maybe a different program? I have no idea. Any and all help would be appreciated.
Thank you.
Click to expand...
Click to collapse
I had problems with LG Flashing Tool the first time I tried to flash stock after upgrading my system OS to Windows 10. I finally got it to work by changing the compatibility mode for application file to Windows 8. I successfully flashed back to D85510L_00.KDZ after making the change I just mentioned.
Abort said:
I had problems with LG Flashing Tool the first time I tried to flash stock after upgrading my system OS to Windows 10. I finally got it to work by changing the compatibility mode for application file to Windows 8. I successfully flashed back to D85510L_00.KDZ after making the change I just mentioned.
Click to expand...
Click to collapse
Thanks, but I tried that already. Didn't work. In the end I transferred everything to my wife's Windows 7 computer and and did the flashing there. Everything ran as smooth as can be.
Hello,
I know you're probably thinking, "omg another note bricked thread". Yes, but I spent many hours of research and couldn't find a thread with my exact problem.
A little background:
I rooted my phone and everything was fine and dandy. I let a friend borrow my phone for a minute and they decided that it would be funny to uninstall google play. I installed the apk from online and had nothing but problems. The app would crash as soon as i started downloading anything. I looked into solutions and did everything from editing the host file to wiping the caches. Nada. The "solutions" just caused other errors. I decided to wipe and reinstall from my backup.
I realized after that because Google Play is a system file, my restore was useless. I decided to wipe everything and reflash the stock firmware with Odin. I downloaded the right one for the verizon model on 5.1.1. Odin sent the file to the device. Just before finishing there was an error and the phone rebooted anyway.
Upon booting the phone now lacked an OS and gave the "use the verizon repair assistant to reinstall the operating system" message. I tried the software (from a friends s5) on 3 different computers and it wouldn't work on any.
I figured, no problem, I will just reflash to stock with Odin again. Only this time my computer no longer recognizes the phone when I put it into download mode. Ive installed and reinstalled the drivers, changed the order of connecting the cables, and when the phone is booted. Nothing works.
The phone can only boot regularly (but lacks an OS) or go to download mode. Recovery doesn't work. Any ideas? Help would greatly be appreciated as the nearest phone repair center is close to 40 miles away
Tl;dr
Phone doesnt have an OS, can boot to download mode, but isn't recognized by computer. The basic troubleshooting steps haven't worked.
Hi urban.. I'm not to technical, but was reading your post. I hit a little confused... Your using the s5 Verizon recovery, not Odin image right
Also try uninstalling the Windows drivers and reinstall after you connect to computer
Sent from my SM-N920V using Tapatalk
Bern612 said:
Hi urban.. I'm not to technical, but was reading your post. I hit a little confused... Your using the s5 Verizon recovery, not Odin image right
Also try uninstalling the Windows drivers and reinstall after you connect to computer
Sent from my SM-N920V using Tapatalk
Click to expand...
Click to collapse
I tried the verizon recovery for the S5 (I don't have it for the note) and the software wouldn't load. Originally I reflashed the phone with an Odin image but now Odin doesn't recognize the phone.
Yup, I've tried that many times on different computers. Thanks though.
Urban415 said:
Hello,
I know you're probably thinking, "omg another note bricked thread". Yes, but I spent many hours of research and couldn't find a thread with my exact problem.
A little background:
I rooted my phone and everything was fine and dandy. I let a friend borrow my phone for a minute and they decided that it would be funny to uninstall google play. I installed the apk from online and had nothing but problems. The app would crash as soon as i started downloading anything. I looked into solutions and did everything from editing the host file to wiping the caches. Nada. The "solutions" just caused other errors. I decided to wipe and reinstall from my backup.
I realized after that because Google Play is a system file, my restore was useless. I decided to wipe everything and reflash the stock firmware with Odin. I downloaded the right one for the verizon model on 5.1.1. Odin sent the file to the device. Just before finishing there was an error and the phone rebooted anyway.
Upon booting the phone now lacked an OS and gave the "use the verizon repair assistant to reinstall the operating system" message. I tried the software (from a friends s5) on 3 different computers and it wouldn't work on any.
I figured, no problem, I will just reflash to stock with Odin again. Only this time my computer no longer recognizes the phone when I put it into download mode. Ive installed and reinstalled the drivers, changed the order of connecting the cables, and when the phone is booted. Nothing works.
The phone can only boot regularly (but lacks an OS) or go to download mode. Recovery doesn't work. Any ideas? Help would greatly be appreciated as the nearest phone repair center is close to 40 miles away
Tl;dr
Phone doesnt have an OS, can boot to download mode, but isn't recognized by computer. The basic troubleshooting steps haven't worked.
Click to expand...
Click to collapse
Had a similar experience myself. I also tried using the Verizon update/repair assistant for another device and it did not work. I ultimately ended up borrowing a Note 4, installing the upgrade/repair assitant from that phone onto my pc (enable USB autoplay, then choose to install the software that runs when you connect the phone). The software installed from another Note4 was able to repair my phone without issue.
Tepidlake said:
Had a similar experience myself. I also tried using the Verizon update/repair assistant for another device and it did not work. I ultimately ended up borrowing a Note 4, installing the upgrade/repair assitant from that phone onto my pc (enable USB autoplay, then choose to install the software that runs when you connect the phone). The software installed from another Note4 was able to repair my phone without issue.
Click to expand...
Click to collapse
Interesting. Was your computer unable to recognize the phone as well? How did you borrow another Note 4? I have scoured the internet and haven't been able to find the software online. Would you be able to PM it to me? I would greatly appreciate it as I do not have immediate access to another Note.
ODIN can be finicky with USB cables and ports. Try switching cables and make sure that you're on a USB port that comes straight from the PC and not a hub.
Try uninstalling the Samsung USB driver, reboot the computer then reinstall.
I'm not sure why you were using S5 software when Note 4 is so readily available. I'm not sure that I can recommend using the Marshmallow firmware yet in ODIN. I would use the 5.1.1 version and do the full firmware flash.
what i've done.
Hello Urban415, earlier today my phone decided to take a dump as well gave me that same message with the yellow triangle, i had flashed a bad image (file name : N910VVRU2BPA1_StockRestore.tar.md5) which then gave me that problem.
//-=-=
I went onto Sam Mobile's site, created an account(its free! to download the firmware, it's needed.)
I had to download N910VVRU2BOG5 - 5.0.1 (it took me 2 hours to DL off their site :\ due to free account... but whatevs)
In order to bring my phone back to life also the version of Odin i used was 3.10.6..
My phone was rooted as well and was using N910VVRU2BPA1 - 5.1.1
//-=-=
Hope this helps ! My note 4 Model # : Sm-n910v, bought refurb off ebay.
P.S. Excuse my grammar, punctuation, etc, etc. Also! running Windows 7 x64 and Verizon's assistant didn't work for me either. not even on my windows 8.1 laptop =x!
douger1957 said:
ODIN can be finicky with USB cables and ports. Try switching cables and make sure that you're on a USB port that comes straight from the PC and not a hub.
Try uninstalling the Samsung USB driver, reboot the computer then reinstall.
I'm not sure why you were using S5 software when Note 4 is so readily available. I'm not sure that I can recommend using the Marshmallow firmware yet in ODIN. I would use the 5.1.1 version and do the full firmware flash.
Click to expand...
Click to collapse
I have tried with 2 cords, and am not using a hub. I also already uninstalled, rebooted and installed. Anything else?
The S5 software is only the verizon restore assistant because that is the only samsung software I had available to me. I am not using the firmware for that phone on my note. I tried to do the full 5.1.1 firmware flash, but can only do that when my computer recognizes the device.
SolFox84 said:
Hello Urban415, earlier today my phone decided to take a dump as well gave me that same message with the yellow triangle, i had flashed a bad image (file name : N910VVRU2BPA1_StockRestore.tar.md5) which then gave me that problem.
//-=-=
I went onto Sam Mobile's site, created an account(its free! to download the firmware, it's needed.)
I had to download N910VVRU2BOG5 - 5.0.1 (it took me 2 hours to DL off their site :\ due to free account... but whatevs)
In order to bring my phone back to life also the version of Odin i used was 3.10.6..
My phone was rooted as well and was using N910VVRU2BPA1 - 5.1.1
//-=-=
Hope this helps ! My note 4 Model # : Sm-n910v, bought refurb off ebay.
P.S. Excuse my grammar, punctuation, etc, etc. Also! running Windows 7 x64 and Verizon's assistant didn't work for me either. not even on my windows 8.1 laptop =x!
Click to expand...
Click to collapse
Glad that you got your device to work. Thanks for the information about the Verizon assistant software. Guess it's not just me.
My problem isn't the firmware and finding it online. My problem is that my computer now refuses to recognize the phone as a usb device. I have tried the usual recommended troubleshooting steps to no avail. Did you have this problem?
I'm reaching about as far as I can go, but: did you try to do a factory reset in recovery? I had that work in freeing up a connection issue in ADB once.
@Urban415 I was googling and found one guy who had a similar issue as you... It was for an older device. But what he did was uninstalled the assistant. Then plugged in his phone and reinstalled the software and it installed the correct drivers... Also I'm not to android savvy, but just a thought. If your using the s5 assistant wouldn't it have to download a note 4 image for it to recognize it. Maybe that's why it's not working. Because it doesn't have the note 4 drivers and image??? Just a thought
Sent from my SM-N920V using Tapatalk
Just saying this on top of my head but I have seen system images for the system itself and another with the firmware included. Maybe try the one with the firmware included?
Sent from my SM-N910V using Tapatalk
Urban415 said:
Interesting. Was your computer unable to recognize the phone as well? How did you borrow another Note 4? I have scoured the internet and haven't been able to find the software online. Would you be able to PM it to me? I would greatly appreciate it as I do not have immediate access to another Note.
Click to expand...
Click to collapse
Hey, sorry it took so long to get back.
As I recall my phone was not visible to ADB or Kies while it was displaying the Verizon Repair Assistant screen erreor screen. I suspect that in that state, only the Repair Assistant is able to talk to the phone.
I ended up waiting for my wife to get home (she has the same phone as me) and borrowing her phone to install the assistant software. The software recognized my phone, though it took a minute or two, even though Kies couldn't see it. The assistant downloaded the firmware and flashed it. Phone good as new.
Urban415 said:
I have tried with 2 cords, and am not using a hub. I also already uninstalled, rebooted and installed. Anything else?
The S5 software is only the verizon restore assistant because that is the only samsung software I had available to me. I am not using the firmware for that phone on my note. I tried to do the full 5.1.1 firmware flash, but can only do that when my computer recognizes the device.
Glad that you got your device to work. Thanks for the information about the Verizon assistant software. Guess it's not just me.
My problem isn't the firmware and finding it online. My problem is that my computer now refuses to recognize the phone as a usb device. I have tried the usual recommended troubleshooting steps to no avail. Did you have this problem?
Click to expand...
Click to collapse
similar thing happened to me but on my 2013 nexus 7. I had to download and use "Minimal ADB and Fastboot" and manually (using Commands within windows command-line-interface) restore my device while it was in "fastboot mode". prior to that tried using "WUGsNexus Root ToolKit " which help instruct the user; with screenshots on how to uninstall drivers that might conflict with one another with the use of another program named "USBDeview". that didn't work for me unfortunately . but for i cannot for sure say if its a "Maybe my windows need a refresh/clean slate" or I missed a step.
Thank you to everyone that helped me in this thread. After trying several new cables, uninstalling and re-installing drivers, rebooting, and playing around with software compatibility software, my problem has been solved.
I have now reflashing stock firmware, rooted, and backed up the phone. Cheers!
this is the error message i get when trying to flash the stock rom onto my lg g4. i bought a phone that had the google account locked out, so i figured i could get around that somehow. when i got to the part where the settings needed accessed in the vision menu, it was greyed out, so i did some more research. this led me to the lg flash tool i used today.
i went to this forum and downloaded all the items needed and installed the drivers, then put the phone into download mode and opened the tool as an administrator. i browsed to the file leaving it at cdma, diag, 33000. i hit cse flash to wipe it and it verified the phone connection. then it said connection to server reset. please try again later and made me exit. i tried again, then this time it it got to upgrading sw and went to 5%, then counted 6, 7, 8, and 9, and then said upgrade stopped due to an error. i have a log if that would help, it looks like it is having trouble extracting the file. i got the US99110c_03.kdz because that is my model of phone, but also tried an 815 in case it was a bad file. any suggestions are much appreciated.
looks like i have figured out what happened. finally, i got a tool started which gave me a thorough error message. it said the new rom was older than the one already there. now, the one dated 28 aug 15 is the newest one i can find anywhere. any ideas where i can find it?
sfzombie13 said:
looks like i have figured out what happened. finally, i got a tool started which gave me a thorough error message. it said the new rom was older than the one already there. now, the one dated 28 aug 15 is the newest one i can find anywhere. any ideas where i can find it?
Click to expand...
Click to collapse
Hey bud, did you ever figure out the issue? I'm having the same problem and can't get it working again. Same exact issue as you. https://forum.xda-developers.com/tm...bootlooped-t3654568/post73357821#post73357821