LG V20 boot problem. - LG V20 Questions & Answers

Hi 2 all. The firstone i wanna say sorry about my english)
I have a problem with my Us996. I was flashed my device on lower firmware from lg-firmwares.com with uppercut for unlock bootloader and rooted my device but i have bootloop (i think ). I trying to flasheed anotheerone firmwares,and update to last security patch from LG Bridge,but this actions have no sense. I have load LG Logo and then boot something (see it in attached ) and so in a circle. ((( Help me someone please! What i should do to for started android or only in LG service can started hi? Thanks.

Can you get into download mode? If yes check this https://forum.xda-developers.com/v20/how-to/guide-lg-v20-to-life-t3827732
PM me if you face any problem.

dksoni411 said:
Can you get into download mode? If yes check this https://forum.xda-developers.com/v20/how-to/guide-lg-v20-to-life-t3827732
PM me if you face any problem.
Click to expand...
Click to collapse
Oh, thx, but i fixed it alredy. Flashed to last security update and did factory reset, and device started.) If you can help me for unlock bootloader and make the root- it's would be great!)

Vovk88 said:
Oh, thx, but i fixed it alredy. Flashed to last security update and did factory reset, and device started.) If you can help me for unlock bootloader and make the root- it's would be great!)
Click to expand...
Click to collapse
https://forum.xda-developers.com/showthread.php?t=3722278
You can try rooting with this guide. If need any help let me know.

Related

Secure Boot Error F320S!

Hello! I have a problem which I don't know how to fix, so I need some help! I'm running stock android 4.4 (20a) and have flashed CWM through Flashify, but every time I try to boot into recovery, I get this message:
"Secure booting error
Error: Boot Certification Verify!"
Recovery worked in android 4.2 (11g), but I messed my phone up, and flashed the latest .kdz-file for my phone. It was after that the recovery-problem appeard.
I've read some places about people with D802 who has this problem, but the fixes they've got only works for D802 and D800. So, how can I fix my F320S? I guess there are more people with the korean version who has stumbled upon this problem, so if you got a fix, please post it!
Excuse my typos if there are any!
Thank you!
LG G2 F320S
Put phone in download mode, and flash the stock KDZ.
If you cannot do this, then you are hard bricked. I had an LG Optimus G which I got a Secure Boot Error after flashing a compatible ROM using TWRP, and although it could get into download mode, it would never be seen as a COM Port in the computer again to it couldn't be seen by the Flash Tools software to restore KDZ.
But it is a stock image I've flashed... What causes the problem!?
Edit: I tried to put it in Download-mode, but the secure-boot error apeard there too... But the phone can't be bricked, as it's booting to Android and everything works...
Would this fix it if the developer made a version based on my aboot?
http://forum.xda-developers.com/showthread.php?t=2500441
Edit no.2: I pressed the wrong button-combination, so yes, I was able to access Download-mode, and it works like a charm!
Send with my LG G2 F320S!
Secure Boot Error D802
2minuutes said:
But it is a stock image I've flashed... What causes the problem!?
Edit: I tried to put it in Download-mode, but the secure-boot error apeard there too... But the phone can't be bricked, as it's booting to Android and everything works...
Would this fix it if the developer made a version based on my aboot?
http://forum.xda-developers.com/showthread.php?t=2500441
Edit no.2: I pressed the wrong button-combination, so yes, I was able to access Download-mode, and it works like a charm!
Send with my LG G2 F320S!
Click to expand...
Click to collapse
Did you ever fix this, and how? I just stumbled on to the same problem the same way. I've got a D802 international. Recovery is corrupted with the same error as yours. That was nonsense about being bricked above. I hate that when people give wrong info. Any help definitely appreciated.
notanymore said:
Did you ever fix this, and how? I just stumbled on to the same problem the same way. I've got a D802 international. Recovery is corrupted with the same error as yours. That was nonsense about being bricked above. I hate that when people give wrong info. Any help definitely appreciated.
Click to expand...
Click to collapse
I did not, but I've read a place where devs managed to roll back just the bootloader and in that way access recovery!
Secure Boot Error D802
2minuutes said:
I did not, but I've read a place where devs managed to roll back just the bootloader and in that way access recovery!
Click to expand...
Click to collapse
I'm wondering what happens if I do a factory reset? Trying to get up the nerve to do it. If not then I think the next best option is to wait for 4.4.3 or higher.
notanymore said:
I'm wondering what happens if I do a factory reset? Trying to get up the nerve to do it. If not then I think the next best option is to wait for 4.4.3 or higher.
Click to expand...
Click to collapse
I don't think a reset will fix it as it's not fixing any corrupt data. The problem lays in the bootloader. It's not able to boot into the recovery installed as if it was an earlier build. It looks like this is what you are looking for to be able to install a recovery the right way. I haven't tried it yet, tho.
Secure Boot Error D802
2minuutes said:
I don't think a reset will fix it as it's not fixing any corrupt data. The problem lays in the bootloader. It's not able to boot into the recovery installed as if it was an earlier build. It looks like this is what you are looking for to be able to install a recovery the right way. I haven't tried it yet, tho.
Click to expand...
Click to collapse
Ok thanks!
Secure Boot Error D802
2minuutes said:
I don't think a reset will fix it as it's not fixing any corrupt data. The problem lays in the bootloader. It's not able to boot into the recovery installed as if it was an earlier build. It looks like this is what you are looking for to be able to install a recovery the right way. I haven't tried it yet, tho.
Click to expand...
Click to collapse
It worked! I took the plunge and it worked immediately. I've got TWRP. I already had root so did not have to use the iroot. I just ran the autorec.apk and problem solved.
Dear sir
My lg f320L and in this phone i have cloudyG2_3.3 version
i wana flash my phone F320L30D
when i flashd 2 % it stop
i have security error in my phole
please HELP
sorry my english poor

[Q]How do you fix Lg Optimus L3 on bootloop?

I have T-Mobile LG Optimus L3 that was rooted with Kingo without a recovery (I'm a noob). A while ago my phone became irresponsive so I hard-reset it( also because I'm a newb). When I was done, my phone was stuck on bootloop. It would get to the white T-Mobile screen then loop there. I tried using the LG Mobile Support Tool but an error would occur at 4%. I don't know what to do. Can you please help.
It's no big deal.
tmojeed said:
I have T-Mobile LG Optimus L3 that was rooted with Kingo without a recovery (I'm a noob). A while ago my phone became irresponsive so I hard-reset it( also because I'm a newb). When I was done, my phone was stuck on bootloop. It would get to the white T-Mobile screen then loop there. I tried using the LG Mobile Support Tool but an error would occur at 4%. I don't know what to do. Can you please help.
Click to expand...
Click to collapse
Try using the KDZ method to flash your phone. So it will be back to it's stock ROM. You can find the KDZ update method here
PS. If you still have doubts I could walk you through. Cheer up!
Different problem here... e400
I was using Cm9 SDmerge by gellmar, I was flashed V10D Brazil, and o got a bootloop (or recovery) i had never seen, my phone is totally bricked, no hard reset, adb can not recognize my phone, KDZ yes but not solve my problem, the only way is Medusa box? anyone can help me? tnxx
Detroit Inferno said:
Try using the KDZ method to flash your phone. So it will be back to it's stock ROM. You can find the KDZ update method here
PS. If you still have doubts I could walk you through. Cheer up!
Click to expand...
Click to collapse
Thanks but I bull****ed to T-Mobile : angel: so they are going to send me new one. :good:
tmojeed said:
Thanks but I bull****ed to T-Mobile : angel: so they are going to send me new one. :good:
Click to expand...
Click to collapse
That's cool. So you opted the easy way. Huh? Anyways, Just glad that you figured out a solution of your own.
---------- Post added at 12:30 PM ---------- Previous post was at 12:25 PM ----------
lucascerqueira said:
I was using Cm9 SDmerge by gellmar, I was flashed V10D Brazil, and o got a bootloop (or recovery) i had never seen, my phone is totally bricked, no hard reset, adb can not recognize my phone, KDZ yes but not solve my problem, the only way is Medusa box? anyone can help me? tnxx
Click to expand...
Click to collapse
OKay. So you tried out differrent things. But if you could explain briefly why the KDZ did not work for you, it will be much easier to solve the puzzle.
Could you get your phone in emergency mode?
lucascerqueira said:
I was using Cm9 SDmerge by gellmar, I was flashed V10D Brazil, and o got a bootloop (or recovery) i had never seen, my phone is totally bricked, no hard reset, adb can not recognize my phone, KDZ yes but not solve my problem, the only way is Medusa box? anyone can help me? tnxx
Click to expand...
Click to collapse
try this:
http://www.modaco.com/topic/355799-tut-lg-l3-cw-recovery-bootloop-fix/
Detroit Inferno said:
That's cool. So you opted the easy way. Huh? Anyways, Just glad that you figured out a solution of your own.
---------- Post added at 12:30 PM ---------- Previous post was at 12:25 PM ----------
OKay. So you tried out differrent things. But if you could explain briefly why the KDZ did not work for you, it will be much easier to solve the puzzle.
Could you get your phone in emergency mode?
Click to expand...
Click to collapse
I don't know why kdz do not work, i had never seen this, I can put on Emergency Mode but, when KDZ finish flash the phone splash a white screen and back to LG logo, adb says only "device not found" , and fastboot says <waiting for device>
lucascerqueira said:
I don't know why kdz do not work, i had never seen this, I can put on Emergency Mode but, when KDZ finish flash the phone splash a white screen and back to LG logo, adb says only "device not found" , and fastboot says <waiting for device>
Click to expand...
Click to collapse
If the phone is not turning back on even after the KDZ update, then chances are that you have hard-bricked your phone. In the KDZ update, does the log says 'UPDATE SUCCESSFUL' message?.
Detroit Inferno said:
If the phone is not turning back on even after the KDZ update, then chances are that you have hard-bricked your phone. In the KDZ update, does the log says 'UPDATE SUCCESSFUL' message?.
Click to expand...
Click to collapse
No kdz sometimes says "Wparam=100; Lparam=6" and sometimes says only FINISHED but still the error
srry for bad english
lucascerqueira said:
No kdz sometimes says "Wparam=100; Lparam=6" and sometimes says only FINISHED but still the error
srry for bad english
Click to expand...
Click to collapse
"Wparam=100; Lparam=6" are errors denoting that the update was not successful. And the 'finished' message indicates that the process is complete. But, it must show that "Update Successful' in the log. Understand that. Try to re-install the LG mobile drivers and then flash it.
Detroit Inferno said:
"Wparam=100; Lparam=6" are errors denoting that the update was not successful. And the 'finished' message indicates that the process is complete. But, it must show that "Update Successful' in the log. Understand that. Try to re-install the LG mobile drivers and then flash it.
Click to expand...
Click to collapse
thanks for help man, but for me the only way was send it to service center...
it cust me R$140,00 (US$70,00)
Alright dude. Glad for you!..

LG Magna stuck in bootloop/bricked

So first of all a little bit of backstory: I tried using TWRP on my phone to install a supposed CM13 rom that actually ended up bricking my phone, but I had made a full backup beforehand in case something like this happened, so I restored the backup via TWRP and nothing, so I thought to myself I'll just wipe my phone and install a stock rom, and so I did, but nothing, the phone was stuck in a bootloop on first launch ( I left it on for about an hour just to make sure). So I used LG Flash Tool with a .dz stock rom for my phone but still nothing, I also tried the official LG tool but the result was the same. I have access to download mode, fastboot and can factory reset the phone, I tried factory resetting it but nothing. So I assume my phone is bricked, how do I unbrick it?
I'm using an LG Magna H502Y Dual-Sim and has an MT6582 chip
Cheers,
Kamefrede
Exactly the same problem here.
You solved that problem?
LG H502G
https://drive.google.com/file/d/0Bz_wqQF1h_j8ejRVeFR1dTBXZlE/view
Flash this with SPFlashtool.
I used this with my LG H502G and it worked!
Trial on H500f
Ardavalar said:
Flash this with SPFlashtool.
I used this with my LG H502G and it worked!
Click to expand...
Click to collapse
I will try it now at my H500f and I really hope it works...
Edit:
LG Magna H500f soft brick fixed. Love u dude! <3
Edit 2:
Don't flash the MD version. And don't downgrade with this ROM. I bricked my H500f again. Heavy.
JuliB said:
I will try it now at my H500f and I really hope it works...
Edit:
LG Magna H500f soft brick fixed. Love u dude! <3
Click to expand...
Click to collapse
It is a pleasure to have been of help <3
LG h502f no root
Stuck in bootloop but couldn't enter download mode to flash
Same problem in my phone, bootlooping. When i choose hard reset, phone restart but never enter reset process, just looping again. I try to enter download mode (i hope could flash my rom), but never succeeded. I am new to bootlooping problem. Hope someone has solutions ... Tks
Ardavalar said:
https://drive.google.com/file/d/0Bz_wqQF1h_j8ejRVeFR1dTBXZlE/view
Flash this with SPFlashtool.
I used this with my LG H502G and it worked!
Click to expand...
Click to collapse
can someone help me plz
Alaa78 said:
can someone help me plz
Click to expand...
Click to collapse
yes

Hard bricked my bootloader locked g6 any help?

hey i likely know the answer to this but i got my lg g6 stuck in qualcomm 9008 mode does anyone know anything i can try? i am planning to send this phone in for warranty over a screen issue i was having but when attempting to factory reset it crashed and ended up here. worried they wont honor the warranty now
Use LGUP and UPPERCUT to flash the stock KDZ files. Google how to get into download mode and a guide. Easy to fix.
basicreece said:
Use LGUP and UPPERCUT to flash the stock KDZ files. Google how to get into download mode and a guide. Easy to fix.
Click to expand...
Click to collapse
there is no download mode. its lifeless aside from the pc recognizing a device in qualcomm 9008 mode when i plug it in.
Download will work.
basicreece said:
Download will work.
Click to expand...
Click to collapse
How? every key combination I've tried does nothing. I guess I might be missing something if so could you be more specific? I do appreciate the help
basicreece said:
Download will work.
Click to expand...
Click to collapse
im pretty sure my laf partition is corrupted
Just follow the guide. I've repaired many phones with this issue.
basicreece said:
Just follow the guide. I've repaired many phones with this issue.
Click to expand...
Click to collapse
the guide was as suspected no help. the device remains unresponsive.
Download mode, flash KDZ. Easy.
basicreece said:
Download mode, flash KDZ. Easy.
Click to expand...
Click to collapse
laf is gone (the partition that runs download mode) in this state I need some way of communication to the device in edl mode. I know what you're saying to do but there is no download mode to get into ive tried... multiple times.
It 100% works. I've fixed handful phones with this exact issue.
basicreece said:
It 100% works. I've fixed handful phones with this exact issue.
Click to expand...
Click to collapse
Im not arguing the validity of this technique in most cases this would be proper procedure but my failure happened partway through writing partitions.
the partition map is corrupt and laf is empty there is no download mode to communicate with anymore. very specific to MY device download mode has been in the easiest sense of the situation deleted
Anyone else got some ideas?
Tinyshy said:
Anyone else got some ideas?
Click to expand...
Click to collapse
Sounds like you got 2 warranty issues now. If the bootloader is locked, LG should honour the repair.
There's a program called QFIL (qualcomm flash) and you can use it to flash a kdz. I believe all it does is flashes download mode as once it succeeds and your phone is in download mode you would then reinstall stock kdz. I noticed there's a mention of 'firehose' though and I'm unsure yet of what that is.
Just curious: how did you manage to remove write protected partition while your bootloader is locked?
MS. said:
Just curious: how did you manage to remove write protected partition while your bootloader is locked?
Click to expand...
Click to collapse
I'm also curious as to what steps you took to lead you here @Tinyshy
if you have bootloader unlock you will never stuck in this, btw in the section of lg g6 h872 i open the thread for all people stuck in this, i also open a petition to lg, sorry mate for now we are aaaaaaaaaaaaaaaall stuck in this sh++, no file available for this smartphone for the hard brick, same for the v20 and the g6
help please
basicreece said:
Download mode, flash KDZ. Easy.
Click to expand...
Click to collapse
can you help me where is the tutorial. I relock the bootloader and brick the phone.
camargod20 said:
can you help me where is the tutorial. I relock the bootloader and brick the phone.
Click to expand...
Click to collapse
https://techtrickz.com/how-to/how-t...re-on-lg-g6-guide-to-unbrick-a-bricked-lg-g6/

Lg V20 stuck on Your device is corrupt. Visit link g.co/abh

Yesterday my v20 started restarting from nowhere. I had this issue before too. I never tried to root my phone never changed recovery nothing its 100% stock. After those restarts i tried to format it with lgup and between the process phone restarted again and now i am in to this annoying boot loop where i can only access fastboot. I cant access download mode nothing else my phone doesn't even turn on. Please help me to get back to normal. I have his 400$ brick laying around, :crying: :crying:
https://forum.xda-developers.com/v20/how-to/guide-patch-lgup-to-unlock-features-t3652222
My phone doesn't boot in download mode.
XblackdemonX said:
https://forum.xda-developers.com/v20/how-to/guide-patch-lgup-to-unlock-features-t3652222
Click to expand...
Click to collapse
I have access to only fastboot mode where oem unlock is unavailable and usb debugging is also unavailable.:crying:
If your phone wasn't rooted, then your NAND has become corrupt. LG has extended the warranty due to bootloops. Open a ticket with them.
-- Brian
Any way to fix that?
runningnak3d said:
If your phone wasn't rooted, then your NAND has become corrupt. LG has extended the warranty due to bootloops. Open a ticket with them.
-- Brian
Click to expand...
Click to collapse
I live in India And I imported phone from USA it's a T Mobile Unit. What are the options? Anything can be done at hardware level ? Without changing the entire motherboard?
No. Order an H918 with a cracked screen and clean IMEI off of eBay (actually it doesn't even have to have a clean IMEI, you can use the one from your current phone), and replace the board.
-- Brian
runningnak3d said:
No. Order an H918 with a cracked screen and clean IMEI off of eBay (actually it doesn't even have to have a clean IMEI, you can use the one from your current phone), and replace the board.
-- Brian
Click to expand...
Click to collapse
Board replacement is the only solution ?
I am in a similar situation.
having tried all the possible ways mentioned here in this forum, I am left with no other options
though I have a working download mode
tried flashing the ROM from other variants like US996 10F using LGUP Patched [The Rom flashed100% and boots up well, but FC in 10sec before i could do anything.
Please help!
Thank you
uccfar said:
Board replacement is the only solution ?
I am in a similar situation.
having tried all the possible ways mentioned here in this forum, I am left with no other options
though I have a working download mode
tried flashing the ROM from other variants like US996 10F using LGUP Patched [The Rom flashed100% and boots up well, but FC in 10sec before i could do anything.
Please help!
Thank you
Click to expand...
Click to collapse
runningnak3d said:
If your phone wasn't rooted, then your NAND has become corrupt. LG has extended the warranty due to bootloops. Open a ticket with them.
-- Brian
Click to expand...
Click to collapse
The above is still true, if this didnt happen immedately after/during rooting/flashing something or using a dd command (while also rooted) your board is dying and you need a new one.
V20 I can't update my V20
Hi, I have a v20 h918 with twrp installed and I can't update the Android version, I get an android lying with an open cover and it says below: error. Can you help me please? Thank you
17promise28 said:
Hi, I have a v20 h918 with twrp installed and I can't update the Android version, I get an android lying with an open cover and it says below: error. Can you help me please? Thank you
Click to expand...
Click to collapse
@princedede on telegram let's see if we can fix it
Thank you ! :good:

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