Develop Bugs

LG G3 D855 5.1.1 Security Error at startup

halp
Hi good people I got problem with my LG G3 D855 I don't know it's European or what but I'm using in south Africa when I'm trying to switch ON it says LG SECURITY ERROR and goes OFF it was rooted and visions was 5.1.1 I even try to flash it with LG flash tool but it's not conecting:crying: now i don't know what to do plz I need help plz

You can check this out.
Probably if you have access to custom recovery and you change the kernel could fix the security error.If not you could try to flash a stock firmware with flash tool and reroot your phone.
[Guide] LG G3 Stock Firmware (Go Back to Stock) KDZ & TOT Method

moon125 said:
Hi good people I got problem with my LG G3 D855 I don't know it's European or what but I'm using in south Africa when I'm trying to switch ON it says LG SECURITY ERROR and goes OFF it was rooted and visions was 5.1.1 I even try to flash it with LG flash tool but it's not conecting:crying: now i don't know what to do plz I need help plz
Click to expand...
Click to collapse
Surely you're not referring to the "Secure Boot Error"?
It happens for recovery access or affects the normal bootup too?
In both cases you have to put device in Download Mode and flash a "bumped" recovery (TWRP is highly preferable).
If the issue persists, you have to restore the stock rom with the LG Flash Tool 2014 by doing a "CSE flash" and lose all data.
If you not solve, your device is officially compromised and ****ed up.
The warranty won't guarantee assistance for broken phone with custom rom or recovery installed.

Trying to flash stock ROM using LG FlashTool, require D855K dll file.

I bricked my phone using CM13 and have followed this guide (open-freax.fr/guide-unbrick-your-lg-g3) . I'm at the point where I need to use LG FlashTool to flash the stock ROM. I always use D855 ROMs but this time LG FlashTool is giving me the error: Device Model is different! Check Phone or DLL! I bought my phone from Australia and my phone's model is D855K, although D855 ROMs have always worked on my phone in the past. If anyone knows where I can get the D855K dll, or perhaps a different method of returning to stock. I can access Download Mode if that helps.

SneakkyStevo said:
I bricked my phone using CM13 and have followed this guide (open-freax.fr/guide-unbrick-your-lg-g3) . I'm at the point where I need to use LG FlashTool to flash the stock ROM. I always use D855 ROMs but this time LG FlashTool is giving me the error: Device Model is different! Check Phone or DLL! I bought my phone from Australia and my phone's model is D855K, although D855 ROMs have always worked on my phone in the past. If anyone knows where I can get the D855K dll, or perhaps a different method of returning to stock. I can access Download Mode if that helps.
Click to expand...
Click to collapse
For stock rom you need to download the one for D855K otherwise it won't work

SneakkyStevo said:
I bricked my phone using CM13 and have followed this guide (open-freax.fr/guide-unbrick-your-lg-g3) . I'm at the point where I need to use LG FlashTool to flash the stock ROM. I always use D855 ROMs but this time LG FlashTool is giving me the error: Device Model is different! Check Phone or DLL! I bought my phone from Australia and my phone's model is D855K, although D855 ROMs have always worked on my phone in the past. If anyone knows where I can get the D855K dll, or perhaps a different method of returning to stock. I can access Download Mode if that helps.
Click to expand...
Click to collapse
check here: http://lg-phone-firmware.com/firmware-Lg+G3-Tutti-41.html

Just follow your link at your post.
You can used tot & dll file from D855 and extract them on boardiag. And flashing aboot, primaryGT, etc on boarddiag using file extractor d855 tot.
But, after finished, after you see "download mode", just flash your d855K kdz, or d855 kdz using flashtools 2014.
This might help you my friend.
Sent from my LG-D855 using Tapatalk

LG G3 soft bricked!! flashed wrong firmware

Heloo everone i am from INDIA
recently i purchased and refurbished lg lg3 within setting i could se it was D855 but on body it was D850
so i thoguhts its D855 because software it was running was D855 but then i flashed D855 firmware to update it and it is soft bricked i direct goes to download mode and nothing works
I took it to a shop he tried sevelar firmware at once i got it boot up but no camera wifi no modem, so it was not the correct one,
So is thier a way i can get it working?
How could i figure it is sprint at&t or verzion??? because it was an cdma set,
Cm13 or stock rom anything could work for me
Anyone please give me a procedure will b thankful to U.... :crying:

I you are able to access download mode, try and flash the latest marshmallow KDZ for D855. My device also has D850 on the back but it has the D855 software.

youssefkr said:
I you are able to access download mode, try and flash the latest marshmallow KDZ for D855. My device also has D850 on the back but it has the D855 software.
Click to expand...
Click to collapse
an you give me the link u have flashed on your device n tool n procedure you sued to flash it??
will b thank full 2 u

happy3777 said:
an you give me the link u have flashed on your device n tool n procedure you sued to flash it??
will b thank full 2 u
Click to expand...
Click to collapse
First open up your phone,exact model will be on the board.then flash accordingly software.

Jahanzaibawan said:
First open up your phone,exact model will be on the board.then flash accordingly software.
Click to expand...
Click to collapse
I know already tried But it was D855 already tried n that caused soft bricking....

Can't flash any kdz/tot after unbricking deadboot H810 with 9008 QFIL trick.

Hello and Good Day to everyone.
I have a problem with my LG G4 (H810) . At first it was not booting at all (no power), so i tried the unbricking trick (QFIL+shorting the two points in the motherboard). I got through with it successfully. I then proceeded to the download mode. My next step was to flash an H810 KDZ. First, i used LG UP and got invalid tots on all H810 roms i've tried (Puerto Rico and AT&T). I looked at my phone's screen and i noticed the line "LS991ZVA". I then tried LG FLASH TOOL 2014 it gave a download error saying (LS991-->H810). I also tried LGFlashTool-2.0.1.6 and it still says download error at the end. Is this still repairable?
PS:
There's was one point when i looked at the screen and instead of LS991ZVA at the bottom, it showed H815AT_(i forgot what's next). I tried flashing an H815 kdz and it didnt show that invalid tot but the new error showed "antirollback". I was rushing to work so i wasnt able to download a newer H815 kdz. I tried to recreate that scenario in the office but now i'm stuck in LS991ZVA line again. I don't know what i did made that H815AT_ line show in download mode.
Hope anyone can help. Thank you.

rph2012cheme2017 said:
Hello and Good Day to everyone.
I have a problem with my LG G4 (H810) . At first it was not booting at all (no power), so i tried the unbricking trick (QFIL+shorting the two points in the motherboard). I got through with it successfully. I then proceeded to the download mode. My next step was to flash an H810 KDZ. First, i used LG UP and got invalid tots on all H810 roms i've tried (Puerto Rico and AT&T). I looked at my phone's screen and i noticed the line "LS991ZVA". I then tried LG FLASH TOOL 2014 it gave a download error saying (LS991-->H810). I also tried LGFlashTool-2.0.1.6 and it still says download error at the end. Is this still repairable?
PS:
There's was one point when i looked at the screen and instead of LS991ZVA at the bottom, it showed H815AT_(i forgot what's next). I tried flashing an H815 kdz and it didnt show that invalid tot but the new error showed "antirollback". I was rushing to work so i wasnt able to download a newer H815 kdz. I tried to recreate that scenario in the office but now i'm stuck in LS991ZVA line again. I don't know what i did made that H815AT_ line show in download mode.
Hope anyone can help. Thank you.
Click to expand...
Click to collapse
Can I ask how you got the H810? It sounds like you may have a frankenstein device (one model motherboard with a different firmware flashed)
Maybe @steadfasterX knows more

ThePiGuy said:
Can I ask how you got the H810? It sounds like you may have a frankenstein device (one model motherboard with a different firmware flashed)
Maybe @steadfasterX knows more
Click to expand...
Click to collapse
It was sold to me by a friend for 16 dollars because the phone wont turn on anymore. My original plan was to only take the Screen Assembly because I also have a G4 (H818P) but the screen already has bubbles at the sides and sometimes ghost touches happen and also there's that annoying temporary screen burn-in effect everytime i stay on an image for too long. I tried to take everything apart and put my H818 motherboard onto the H810. When i turned it on, the screen don't show anything and the notification led flashes (light blue) and the phone would then turn off. Right now, i'm trying to repair the H810 so that atleast i can make it my main phone.

rph2012cheme2017 said:
so i tried the unbricking trick (QFIL+shorting the two points in the motherboard). I got through with it successfully.
Click to expand...
Click to collapse
congrats.. regardless of your real model you converted your device!
QFIL is nothing an average user should ever do as long as not guided by someone..
what you see in download mode, recovery and android is just software so even when you see IOS v22 there it doesnt mean anything.
what u see in fastboot is true, you have converted your device to a LS991
the very first thing before flashing again random stuff or even worse using QFIL again is: identify your real model (even when now converted).
the only way to do so is to disassemble the device and look whats written on the front of the mainboard (sounds harder then it actually is)
https://www.ifixit.com/Guide/LG+G4+Motherboard+Replacement/51202
Then when you KNOW what you really have we can proceed
.

Okay got it. My original plan was really not to fix it but only to reuse its screen on my H818P (unfortunately, i think it's incompatible). I will look into it (mainboard) when i get home. Thanks Mr. SteadfasterX

@steadfasterX
Here is the sticker at the back of phone (H810)
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Here's the model number written on the mainboard (F500L if i'm looking at the right thing)

rph2012cheme2017 said:
@steadfasterX
Here is the sticker at the back of phone (H810)
Here's the model number written on the mainboard (F500L if i'm looking at the right thing)
Click to expand...
Click to collapse
yep classical Frankenstein. you have a F500 refurbished with a H810 firmware.
you flashed with QFIL the malware LS991 files (yes its known that they are named for several models but many contain the same files - which converts all to LS991).
LS991 has ARB (atm you have an ARB of 2)
F500 and H815 dont have ARB
you cant flash any firmware lower then ARB 2 and so you can never flash F500, H815 or H812 ROMs anymore! (and do not even think about flashing a firmware with an ARB of 3 or higher!)
For getting mobile network signal you need a successfully loaded modem which will never happen anymore as you increased the ARB. that means even when you get your device back to work you will be only able to use it as a tablet (WiFi, BT etc will do but no calling,sms,mobile internet)
ARB? --> https://bit.do/antirollg4
you can bring back life back to this device by:
1) flashing a LS991 rom (ensure you use ARB 2 only)
2) MAYBE !! flashing a H811 rom (as H810 bootloaders are compatible with h811) but ensure you use ARB 2 firmwares only !
If that works: congrats! you can now unlock by a fastboot command and thats your best chance to maybe even get mobile signal back! (no one ever tested that though)
3) you may try to flash H810 10o which has an ARB of 2 and is also a very good chance to bring back life to your device - maybe well I would say very likely the best one!
4) flashing the partions system , modem and boot of any ROM (yes even of a f500,h810,h815... as these single partitions do not increase your ARB) you like within fastboot (yes you can now flash there bc of .. that would take too long. I know you will be able to do so as I use parts of it in UsU)
Consider to use the thanks button on every helpful post
.

you can bring back life back to this device by:
1) flashing a LS991 rom (ensure you use ARB 2 only)
2) MAYBE !! flashing a H811 rom (as H810 bootloaders are compatible with h811) but ensure you use ARB 2 firmwares only !
If that works: congrats! you can now unlock by a fastboot command and thats your best chance to maybe even get mobile signal back! (no one ever tested that though)
3) you may try to flash H810 10o which has an ARB of 2 and is also a very good chance to bring back life to your device - maybe well I would say very likely the best one!
4) flashing the partions system , modem and boot of any ROM (yes even of a f500,h810,h815... as these single partitions do not increase your ARB) you like within fastboot (yes you can now flash there bc of .. that would take too long. I know you will be able to do so as I use parts of it in UsU)
Consider to use the thanks button on every helpful post
.[/QUOTE]
Should i try from 1 to 5 sir if which one will work? or Should i try (3) first since it's the best one. Also, which one would i use to flash, LG UP or the lastest LG Flash Tool? Thank you.

Is it also possible sir that an H810 screen is not compatible with my H818? If I wont be able to use it as a normal phone, i might as well use it's screen on my H818P. I did try but there's no image. The notification lights only flashes color light blue and then the phone powers off (takes 15-20 seconds after clicking the power button).

rph2012cheme2017 said:
Should i try from 1 to 5 sir if which one will work? or Should i try (3) first since it's the best one. Also, which one would i use to flash, LG UP or the lastest LG Flash Tool? Thank you.
Click to expand...
Click to collapse
i would try #3 first.
rph2012cheme2017 said:
Is it also possible sir that an H810 screen is not compatible with my H818? If I wont be able to use it as a normal phone, i might as well use it's screen on my H818P. I did try but there's no image. The notification lights only flashes color light blue and then the phone powers off (takes 15-20 seconds after clicking the power button).
Click to expand...
Click to collapse
yes. the screen for the h818 is incompatible with the h810 one as the h818 uses a different panel then all other 10 g4 models..

steadfasterX said:
i would try #3 first.
It gives an error on both LG FLASH TOOL and LG UP sir.
LG FLASH TOOL
LG UP
G4 Screen
I'll try the other options.
Click to expand...
Click to collapse

Ill try the H811 kdz.

LS991ZV6 (ARB 2) also fails in both LG UP (invalid tot) and LG FLASH TOOL

rph2012cheme2017 said:
LS991ZV6 (ARB 2) also fails in both LG UP (invalid tot) and LG FLASH TOOL
Click to expand...
Click to collapse
I hexedited an H81010o tot to be read as H81510c. Now i can flash it with LG UP. Hope this will revive the phone.

rph2012cheme2017 said:
I hexedited an H81010o tot to be read as H81510c. Now i can flash it with LG UP. Hope this will revive the phone.
Click to expand...
Click to collapse
And it's alive!! Now, how do i bypass this screen?

rph2012cheme2017 said:
And it's alive!! Now, how do i bypass this screen?
Click to expand...
Click to collapse
@steadfasterX can i fastboot flash an F500 modem/radio img. even if i flashed an H81010o firmware in this phone?

rph2012cheme2017 said:
@steadfasterX can i fastboot flash an F500 modem/radio img. even if i flashed an H81010o firmware in this phone?
Click to expand...
Click to collapse
I think i need radio in order to bypass that email verification screen because it emergency call.

rph2012cheme2017 said:
I think i need radio in order to bypass that email verification screen because it emergency call.
Click to expand...
Click to collapse
Why not using Wi-Fi? At least for the moment. No you can't flash the f500 modem partition because it has arb of 0
Sent from my LG-H815 using XDA Labs

steadfasterX said:
So you hexedit the h810 10o and successfully flashed it correct?
Why not using Wi-Fi? At least for the moment. No you can't flash the f500 modem partition because it has arb of 0
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Yes I hexedited the H810 10o tot because it's the only way to flash it in LG UP as LGUP is detecting my phone as H81510C. So i just replaced 1 line in H810 10o into H81510c.
My problem is i need to bypass the email verification screen. I don't know the email that is associated with this phone. Most of the youtube videos i've seen on how to bypass is they use emergency call. When i try it, the phone just says "turning radio on". Any other way to bypass that email verification screen without the use of emergency call? Thanks

@steadfasterX i wasnt able to bypass the email verification but i was able to go to the settings menu. Is it safe to update this phone to marshmallow? It's currently on 5.1 Lollipop. Maybe it will increase ARB so might be a bad idea.

[Solved} Hard brick sprint v50 , I need a dump of all partitions of a sprint v50

I accidentally erased all partitions in partition manager of QFIL , so the phone wouldn't even turn on , no download mode ,no EDL mode no fastboot , no nothing , so I saw a post somewhere in G8 forums and I followed it , I basically opened the back cover and connected the two gold plate pluses with a tweezer and connected to PC and it wend to EDL 9008 mode, all partitions are there but they are empty , so I need a dump of all partitions of a sprint v50 , I would be forever grateful.

delete

I unbricked my phone using all rawprogram xml files from this sprint V50 dump, but one thing to notice to select all xml files and flash them ,not one by one , and you will boot system eventually.

Bronnel said:
I unbricked my phone using all rawprogram xml files from this sprint V50 dump, but one thing to notice to select all xml files and flash them ,not one by one , and you will boot system eventually.
Click to expand...
Click to collapse
Hello im having the same issue as urs, no download mode no fastboot no bootup, only edl mode being detected by my pc, im using korean variant v50 can u help me resurrect my phone too

LawreNczzze said:
Hello im having the same issue as urs, no download mode no fastboot no bootup, only edl mode being detected by my pc, im using korean variant v50 can u help me resurrect my phone too
Click to expand...
Click to collapse
first of all you need to be patient with it, and you will eventaully be able to boot to system
you need rawprogram for your variant , there is telegram group for LG V50 maybe you can find rawprogram for your variant, I think this guide is your best bet of restoring your phone , do everything step by step , if your are stuck at something google is your friend , believe me I learned everything this way , I hope you restore your device soon
Edit:
if you are able to enter edl mode, then give the above sprint backup a try and see if it helps, use rawprogram to flash

Bronnel said:
first of all you need to be patient with it, and you will eventaully be able to boot to system
you need rawprogram for your variant , there is telegram group for LG V50 maybe you can find rawprogram for your variant, I think this guide is your best bet of restoring your phone , do everything step by step , if your are stuck at something google is your friend , believe me I learned everything this way , I hope you restore your device soon
Edit:
if you are able to enter edl mode, then give the above sprint backup a try and see if it helps, use rawprogram to flash
Click to expand...
Click to collapse
Sort of stuck here, manage to use the Raw file to flash back to this version. It completed successfully. Still not able to boot. Upon restart after loading all files in "v50unbrickbackup" my phone, Sprint v50, tries to boot and after initial splash screen just repeatedly flashes the splash screen. I have no boot or recovery but do have file download mode. But since there's no KDZ for this phone I'm a bit stump.
Before funning the Raw file loads I was able to get into fastboot but it was very unusual in that it didn't say which was the active slot. I tried all fastboot commands to try and set the active boot slot but no go. Weird message about can't set slot on unlock BL. This was an Unlock BL phone, now who knows.
My thought are the phone just doesn't know where to boot from. is the a Laf or Op problem?
Any thoughts/suggestions would be greatly appreciated!

I have this problem with mi V50 Sprint variant.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Do you think with your method can give life again?

hooutoo said:
Sort of stuck here, manage to use the Raw file to flash back to this version. It completed successfully. Still not able to boot. Upon restart after loading all files in "v50unbrickbackup" my phone, Sprint v50, tries to boot and after initial splash screen just repeatedly flashes the splash screen. I have no boot or recovery but do have file download mode. But since there's no KDZ for this phone I'm a bit stump.
Before funning the Raw file loads I was able to get into fastboot but it was very unusual in that it didn't say which was the active slot. I tried all fastboot commands to try and set the active boot slot but no go. Weird message about can't set slot on unlock BL. This was an Unlock BL phone, now who knows.
My thought are the phone just doesn't know where to boot from. is the a Laf or Op problem?
Any thoughts/suggestions would be greatly appreciated!
Click to expand...
Click to collapse
in EDL mode , partition manager erase userdata partition and try rawprogram again

SBruno said:
I have this problem with mi V50 Sprint variant.
View attachment 5435061
Do you think with your method can give life again?
Click to expand...
Click to collapse
flash kdz using lgup if you got the Korean variant

Bronnel said:
in EDL mode , partition manager erase userdata partition and try rawprogram again
Click to expand...
Click to collapse
Will give it a shot. Wondering about the vwz kdz, if i could get it to boot to a recover.img?
btw thanks for the help.

hooutoo said:
Will give it a shot. Wondering about the vwz kdz, if i could get it to boot to a recover.img?
btw thanks for the help.
Click to expand...
Click to collapse
yes if you have verizon v50 you can flash verizon kdz , it works with a patched LGUP which you can find in G8 forums somewhere, you're welcome.

Bronnel said:
yes if you have verizon v50 you can flash verizon kdz , it works with a patched LGUP which you can find in G8 forums somewhere, you're welcome.
Click to expand...
Click to collapse
Nah, I have a v450pm which is sprint so it seems lgup is out or at least i havent found anyone that got it to work with sprint model. i just get a device protection error when i try it.

hooutoo said:
Nah, I have a v450pm which is sprint so it seems lgup is out or at least i havent found anyone that got it to work with sprint model. i just get a device protection error when i try it.
Click to expand...
Click to collapse
the unbrickbackup is from a sprint , so it should definitely work for your device , but you might need to give the rawprogram a couple of tries to get it to work , I hope it works for you.

Nah, it never had anything to do with using the Raw0 thru 6 to restore the partitions. That worked. The problem was somehow I corrupted my FTM partition which is a killer during the boot process. I would get the original splash screen and the then the splash screen would just start flashing. I would have never found it if I hadn't paid $14 to have the phones restored via Medusa 2.2 pro/Russian dude. He restored the entire phone but when it start to "Splash Screen flash" again he new exactly what it was. He loaded the FTM partition with a copy he had and boom, it booted right up.
I now have a working v450pm, boot unlocked, twrped and root. Did I read somewhere that you flashed one of the A11 roms? If so how's it working? Recommend one?
Steve

hooutoo said:
I now have a working v450pm, boot unlocked, twrped and root. Did I read somewhere that you flashed one of the A11 roms? If so how's it working? Recommend one?
Steve
Click to expand...
Click to collapse
I'm glad you finally got your phone up and running again, I recommend making a backup of all partitions in case something goes wrong again , and make sure you save the backup on google drive or something , because it may get corrupted overtime.
I tried most roms available for v50, but I think Evolution X is most stable of them, it was really smooth and fast, but I haven't test out everything, I only installed it to see how was the experience then went back to stock.

Bronnel said:
I'm glad you finally got your phone up and running again, I recommend making a backup of all partitions in case something goes wrong again , and make sure you save the backup on google drive or something , because it may get corrupted overtime.
I tried most roms available for v50, but I think Evolution X is most stable of them, it was really smooth and fast, but I haven't test out everything, I only installed it to see how was the experience then went back to stock.
Click to expand...
Click to collapse
Were you able to activate on a US mobile network ie tmobile or att? Don't know if you're in the States.
I tried the CrossFlash rom here: forum.xda-developers.com/t/guide-crossflash-v450pm-to-v500em-android-11.4342455/#post-85790865
But it doesn't seem be able to actually logon to a mobile network. One guy said he got data on Verizon but couldn't make a call. I had the same problem with Google Fi. I had data temporarily but couldn't make a call and now it won't even get data.

hooutoo said:
Were you able to activate on a US mobile network ie tmobile or att? Don't know if you're in the States.
I tried the CrossFlash rom here: forum.xda-developers.com/t/guide-crossflash-v450pm-to-v500em-android-11.4342455/#post-85790865
But it doesn't seem be able to actually logon to a mobile network. One guy said he got data on Verizon but couldn't make a call. I had the same problem with Google Fi. I had data temporarily but couldn't make a call and now it won't even get data.
Click to expand...
Click to collapse
My carrier is a GSM network , I'm not in US so I'm not familiar with CDMA networks, cheers

Hi , I have the same problem stuck in edl mode and unable to boot into download mode and not booting up .
My phone is a SK telecome lg v50 , so can i use this unbrickbackup file to flash ?

Bronnel said:
My carrier is a GSM network , I'm not in US so I'm not familiar with CDMA networks, cheers
Click to expand...
Click to collapse
Need your help please .
Hi , I have the same problem stuck in edl mode and unable to boot into download mode and not booting up .
My phone is a SK telecome lg v50 , so can i use this unbrickbackup file to flash ?

delete