Develop Bugs

Hard bricked VS985 after ROM flash failure

Sorry, I'm relatively new to rooting and I looked through the threads and found similar problems, but none that seem to exactly match mine.
I have a rooted VS985 that I was trying to flash with the AndroidNow HD 6.1 ROM using TWRP and I guess the flash tool crashed. It was stuck on a black screen for an hour or two so I hard reset it and after that, the phone will only flash the LG logo for a second before the screen turns off and the indicator light alternates flashing red and blue. As far as I can tell, the computer does not detect it when it is in this mode (seems similar to the secure boot issue that some people have been having). I cannot enter download mode (the LG logo flashes on and the indicator light flashes blue once and then both turn off) but I can still boot into TWRP Recovery. When I try to boot into download mode, even while the screen is off, my computer detects the phone as QHSUSB_BULK. Also, when in recovery mode, my computer can detect the phone as a G3 and I can access it with adb tools but I don't know where to go from here. I have tried using the LGFlashTool but I can't seem to access the phone because it will not enter download mode and I've tried reflashing AndroidNow HW 6.1. The flash completes and says it is successful, but the phone still will not boot properly.
Luckily, I got the phone a few days ago from Costco, so there is a good chance I can still return it, but I would like to fix it if I can.
Any help would be greatly appreciated.

pyroguy3590 said:
Sorry, I'm relatively new to rooting and I looked through the threads and found similar problems, but none that seem to exactly match mine.
Any help would be greatly appreciated.
Click to expand...
Click to collapse
You said you have adb working.
Did you make a backup of your stock download mode at anypoint of time? (Iaf.img)
I guess it can be pushed back using adb, but am not very sure. Even if not, maybe you can take the stock Iaf.img from someone else and try pushing it via adb using this command:
Code:
dd if=/storage/external_SD/stock-laf.img of=/dev/block/platform/msm_sdcc.1/by-name/laf
Then you can boot into the download mode using the command:
Code:
fastboot boot stock-laf.img

It doesn't look like I have the stock laf.img backed up. I'll try to get it from someone. Thanks, I'll let you know what happens when I get it.

I need this tooi fi h
had a nandroid backup but accidentatlly delted it when i formatted my internal memory now im stuck on liquidsmooth custom rom cant get into download mode so kdz/tot will not work for me... I have twrp installed and that works though. I need to use adb to flash those files or have a stock vs985 that i can flash with twrp... I have vs985 i like the liquid smooth room but the camera and video camera doesnt work as good as it did with stock...
Any help or ideas would bee aprraciedated ive tried everything

just Switch off your mobile.. and put out bettery from it,
And In Pc Download Any Official Tot rom For Your lg g3 vs985 than Open LG Flash Tool 2014
download it from Xdadevelopers any version
Than Put back your bettery In Your Mobile And dont press any button Just put your usb in,your pc and Same time Put Pin in your mobile and press Volume up button And Your Mobile goes in Download Mod Automaticly..
Than Just Flash any Tot Software in It..
Its Working Like Charm,,
Try it It is Working for me Also

help with stock restore

ok I have a tmobile usa lg g4, I'm stock rooted but want to go back full unroot stock, I have the lg flash tool and the h81110h Kdz file, but my current ota version is h8110n with this help me to go back to stock or brick

Just as long as kdz file is intended for H811 it will be fine, final letter is software revision. (Eg: My H815 started on H815 v10a and is now on V10g)

passion8059 said:
Just as long as kdz file is intended for H811 it will be fine, final letter is software revision. (Eg: My H815 started on H815 v10a and is now on V10g)
Click to expand...
Click to collapse
ok now last question is the kdz file is h81110h but I'm on h81110n the kdz file I have is the same version the phone was on when I got it before updating to h91110n so I should be fine right...I just don't want to screw up a nother phone

yes it will be put back to h but once restored to stock do system updates via settings and will upgrade accordingly.

passion8059 said:
yes it will be put back to h but once restored to stock do system updates via settings and will upgrade accordingly.
Click to expand...
Click to collapse
thanks man........for answering my q's....
mods please delete or close thread

well I cant seem to get this meth to work....stays at checking pc it stays at 1% for 20 min, I start oer and end up at the same point...
I cant even use twrp to simply flash a stock rom, everytime I flashed or installed anything twrp just restarts and nothing, and now when I try to even get in to twrp I end up in fastboot mode....what the **** did I do to my phone...

Follow this: http://www.androidexplained.com/lg-g4-how-to-boot-into-download-mode/ and then when in downloade mode open lg tool as admin.
Select kdz and click on Normal flash, change language and region (in your case other country and English) Lg Tool should now process kdz and reset phone back to stock.
I'll be back on here @ 3pm GMT and see how you have got on

passion8059 said:
Follow this: http://www.androidexplained.com/lg-g4-how-to-boot-into-download-mode/ and then when in downloade mode open lg tool as admin.
Select kdz and click on Normal flash, change language and region (in your case other country and English) Lg Tool should now process kdz and reset phone back to stock.
I'll be back on here @ 3pm GMT and see how you have got on
Click to expand...
Click to collapse
I thought it was better to use the CSE flash if you wanted to revert to full stock. I've never tried the Normal method; only had to flash CSE once haha

amartolos said:
I thought it was better to use the CSE flash if you wanted to revert to full stock. I've never tried the Normal method; only had to flash CSE once haha
Click to expand...
Click to collapse
ok I do as told but still no go....I try to get into twrp on my phone, but it goes into in to fastboot mode instead...how can I enter twrp threw fastboot mode??

lrmdaddy said:
ok I do as told but still no go....I try to get into twrp on my phone, but it goes into in to fastboot mode instead...how can I enter twrp threw fastboot mode??
Click to expand...
Click to collapse
To get into recovery, just use
Code:
fastboot reboot-recovery
and the phone should, uh, reboot into recovery

amartolos said:
To get into recovery, just use
Code:
fastboot reboot-recovery
and the phone should, uh, reboot into recovery
Click to expand...
Click to collapse
ok I have twrp but I cant get into it but system shows it there, if i want to simply flash a stock rom over my system theres a app called "AUTO FLASHER" can i use this without screwing up my phone or are u not sure
in the long run I'm simplpy trying to go back to stock, then trying to re root and start over the rom i have is stock rooted...
cancel that this dosent work...

so I got flash tool to work now after the flash my phone is ****ed, dosent even turn on

follow the guide attached earlier to get download mode, you do not need apps just tools that guide states. I have used kdz method on my own H815 and it worked fine.

passion8059 said:
follow the guide attached earlier to get download mode, you do not need apps just tools that guide states. I have used kdz method on my own H815 and it worked fine.
Click to expand...
Click to collapse
phone now dosent power on after using flash tools

Remove battery and replace does pc detect it?

passion8059 said:
Remove battery and replace does pc detect it?
Click to expand...
Click to collapse
nope.... nothing....tmobiles sending a nother unit out to me...but Id like to try to fix this one so all can know better what to do if this happens to them... battery out and backin dosent do any thing, no download mode, plug in wall still nothing, no red light no vibrabtions nothing all all

sounds like app has corrupted emmc chip = dead phone

passion8059 said:
sounds like app has corrupted emmc chip = dead phone
Click to expand...
Click to collapse
I didn't use the app so I don't know what did it, the only apps installed on phone out side of stock was supersu pro, tb, so I'm lost and it goes in trash....good thing I have backup nexus to use...
if indeed its the chip will lg/tmobile know its been rooted

not if it is corrupted because data is lost on partitions.

Have you tried putting your phone into Download Mode and doing a full flash of the KDZ for your variant? You just need to hold Vol_Up and plug phone into computer to boot into Download Mode.

About the update from 5.0 to 6.0 bootloop. (Genisys Rom 2.6.zip)

I want to ask that it hasn't any solutions yet??
I have flash Genisys Rom 2.6.zip than reboot that have a bootloop problem....
Will it be a solutions then?
Any idea??

Have you flashed v20a bootloader and modem images?

mirko93s said:
Have you flashed v20a bootloader and modem images?
Click to expand...
Click to collapse
Yes I flash it back those v20a bootloader, boot and modem after I got into the twrp, then I reboot it, it is stuck on the LG logo screen now...
and now I can't go back to the fastboot mode and the twrp...that 's the problem...

any idea to go back the twrp?

i'm stuck on same thing.
What I've tried.
! flashing back to stock rom using lg flash tool. Crashes at 9%. Tried flashing 20A file not allowed
both adb and fastboot methods don't work as adb doesn't detect phone and fastboot get's stuck on waiting on device
Basically the phone is stuck on boot logo after upgrading to marshmallow which all went fine and phone booted as normal after I then reinstalled the twrp recovery as before so to install supersu after boot that when the problem started. The phone can get into factory reset the two yes methods which I have tried still no luck and I can also get into download mode. basically am I waiting on a update to lg flash tool or have I ducked my phone any help would be appreciated

You probably ****ed the security flag added into marshmallow and it didn't like it one bit,that's why its better the flash newer versions of a rom when you have a recovery then an official ota ,that's where they get ya locked down .is there any devices in the device manager at all? Just checking if its hard bricked.if its labeled as q9xxxx something like that then its definitely hard bricked.like not even a jtag can get er back

imsopickled said:
i'm stuck on same thing.
What I've tried.
! flashing back to stock rom using lg flash tool. Crashes at 9%. Tried flashing 20A file not allowed
both adb and fastboot methods don't work as adb doesn't detect phone and fastboot get's stuck on waiting on device
Basically the phone is stuck on boot logo after upgrading to marshmallow which all went fine and phone booted as normal after I then reinstalled the twrp recovery as before so to install supersu after boot that when the problem started. The phone can get into factory reset the two yes methods which I have tried still no luck and I can also get into download mode. basically am I waiting on a update to lg flash tool or have I ducked my phone any help would be appreciated
Click to expand...
Click to collapse
Yes brother!!! The same thing as you experience.... just like the thread (LG G4 bootloop.... Need expert help... Ready to pay the price)
but there are still nothing method? So just wait for the update to lg flash tool and the fully TOT files??
O MY GOD...I've been fooled trick this time...

mr turtle droid said:
You probably ****ed the security flag added into marshmallow and it didn't like it one bit,that's why its better the flash newer versions of a rom when you have a recovery then an official ota ,that's where they get ya locked down .is there any devices in the device manager at all? Just checking if its hard bricked.if its labeled as q9xxxx something like that then its definitely hard bricked.like not even a jtag can get er back
Click to expand...
Click to collapse
No its listed as two different devices as LGE andriodnet serial port com4 and also LGE andriodnet usb modem. I have noticed that if i uninstall these two from within device manager that it then goes back to an lgmobile phone with a i on the phone icon in device manager. I have tried to find the proper driver so to make the computer see the lg phone again without error via extracting driver install exe but no joy it goes back to the above.
I wonder Is it possible to flash the .img files that are boot. system etc using lg flash tool the one with the tot methid via a script and the files I wonder. Or even convert the files needed to do a complete flash of system bootloader etc to bin files so to be read by the lg flash tool used in the tot version. or is there any other software that can convert kdz to bin.

imsopickled said:
No its listed as two different devices as LGE andriodnet serial port com4 and also LGE andriodnet usb modem. I have noticed that if i uninstall these two from within device manager that it then goes back to an lgmobile phone with a i on the phone icon in device manager. I have tried to find the proper driver so to make the computer see the lg phone again without error via extracting driver install exe but no joy it goes back to the above.
I wonder Is it possible to flash the .img files that are boot. system etc using lg flash tool the one with the tot methid via a script and the files I wonder. Or even convert the files needed to do a complete flash of system bootloader etc to bin files so to be read by the lg flash tool used in the tot version. or is there any other software that can convert kdz to bin.
Click to expand...
Click to collapse
I think this is impossible to flash the .img files that are boot. Because we cannot to go into the fastboot mode.

bardochu said:
I think this is impossible to flash the .img files that are boot. Because we cannot to go into the fastboot mode.
Click to expand...
Click to collapse
not even through adb shell????????
---------- Post added at 02:03 PM ---------- Previous post was at 02:02 PM ----------
and what you guys are experienceing is the rollback protection from lg in their boot-loaders...not sure how to get past it but i saw a thread on here to get past it

I too, like many others, am stuck in a boot loop, able to access download mode, but not recovery, i have an unlocked bootloader, but cannot get into fastboot or use adb commands.

robg2102 said:
I too, like many others, am stuck in a boot loop, able to access download mode, but not recovery, i have an unlocked bootloader, but cannot get into fastboot or use adb commands.
Click to expand...
Click to collapse
:highfive:In the same boat, XDA's brother TheBledard Who has a same trouble in the bootloop. He said that you can use the octopus box to unbrick.
But it seem a little bit expensive....:cyclops:

Same
I had the same problem. They recently reposted the download to a fixed 2.6 so try to redownload from the genesys post. Also, flash the marshmallow kernel and supersu right after, then followed by genesys theme if you choose to use.

Retry and retry to start twrp at boot with sleep button and volume down button.... I had the same problem with marshmallow because i forgot to flash v20a bootloader, and i had finally access to twrp after a lot of times...

bardochu said:
:highfive:In the same boat, XDA's brother TheBledard Who has a same trouble in the bootloop. He said that you can use the octopus box to unbrick.
But it seem a little bit expensive....:cyclops:
Click to expand...
Click to collapse
almost 200 dollar yes

Stuck in boot loop and can't get into fastboot mode to use adb, need help

I followed this tutorial: http://forum.xda-developers.com/g4/general/unlock-bootloader-install-twrp-root-t3128241
Here's what I did:
Unlocked bootloader
Booted into TWRP (version 3.0) (didn't install, just booted into)
Flashed SuperSU
Rebooted into system
Now whenever I boot the device I'm stuck in a boot loop.
So I can't boot the device up or get into fastboot mode (what should fastboot mode look like? I got into download mode at some point), not sure what to do?

I had same problem once, managed to handle it with LGUP and refubrish full stock rom

ashensii said:
I had same problem once, managed to handle it with LGUP and refubrish full stock rom
Click to expand...
Click to collapse
I tried LGUP but it says the Model is "unknown" so when I select my phone it says "You have to select a known model, please." Can someone help?

I also tried flashing a stock kdz using LG flash tool but I got an error. Does anyone know what I can do? I can get my phone into download mode but don't know what to do on my computer.
I'll give someone $20 if they can help fix my phone for me

Paul397 said:
I also tried flashing a stock kdz using LG flash tool but I got an error. Does anyone know what I can do? I can get my phone into download mode but don't know what to do on my computer.
I'll give someone $20 if they can help fix my phone for me
Click to expand...
Click to collapse
With LG up if it comes up with device unknow with usb cable still pluged in pull battery out then put it back.

Paul397 said:
I also tried flashing a stock kdz using LG flash tool but I got an error. Does anyone know what I can do? I can get my phone into download mode but don't know what to do on my computer.
I'll give someone $20 if they can help fix my phone for me
Click to expand...
Click to collapse
I had the same problem.
If you can get your phone in the download mode, than try this.
1: Install LGBridge,
2: Boot your phone in download mode & start LGBridge,
3: Than on Software Update tab, on the bottom right corner, you will see an option saying "Update Error Recovery"
4: Click on it and your phone will be flashed to latest firmware. Make sure you are connected to net as it will need to download it.
Once the update it complete, Your phone should reboot normally.
Give it a try and let me know how it goes.

Today's CM14 bricked my H815 (no bootloader, no fastboot, no recovery)

Hi,
My H815 always suffered from this problem: http://forum.xda-developers.com/g4/help/fastboot-download-mode-problem-t3466649 - the only way I could have fastboot was from an adb shell.
Well, that was not a problem until today: CM14's nightly broke (booting just loops at the moving logo) and now I have no way to go back to fastboot. And if I try the recovery mode, I just have a blurry circle saying "erasing" for a few seconds, then a looping CM logo.
Anyone has a way out of this mess ?

bestouff said:
Hi,
My H815 always suffered from this problem: http://forum.xda-developers.com/g4/help/fastboot-download-mode-problem-t3466649 - the only way I could have fastboot was from an adb shell.
Well, that was not a problem until today: CM14's nightly broke (booting just loops at the moving logo) and now I have no way to go back to fastboot. And if I try the recovery mode, I just have a blurry circle saying "erasing" for a few seconds, then a looping CM logo.
Anyone has a way out of this mess ?
Click to expand...
Click to collapse
When you say you try the recovery mode how do you try to get into it? Btw do you have twrp installed?

Same thing happened to me, tried to install, just got put straight back in to TWRP after boot. Tried installing a stock ROM, CM ROM & using LG Bridge to recover, to no avail. Help appreciated, (i'm assuming LGUP is going to come up a lot)

Tycoon282 said:
Same thing happened to me, tried to install, just got put straight back in to TWRP after boot. Tried installing a stock ROM, CM ROM & using LG Bridge to recover, to no avail. Help appreciated, (i'm assuming LGUP is going to come up a lot)
Click to expand...
Click to collapse
The OP has another issue pls do not hijack.

steadfasterX said:
The OP has another issue pls do not hijack.
Click to expand...
Click to collapse
Sorry, it's nearly the same issue though, CM14.1 broke phones today.

Today's update broke mine as well. Looking for solutions. Will follow your thread and progress.

Same for me. Tried download mode with lgup to flash stock which worked once - but I kind of bricked it again by trying to install cm14.1 again. Then i tried to go back to stock using lgup again, but now lgup it just crashes. The phone now goes automatically to download mode after turning it on, the progress bar stays at 0%, the phone says "633A B100" and lgup crashes after 9% "prepare dlmode" or something similar. any ideas? :/

Some people seem to have fixed this issue by flashing the official Cyanogenmod Recovery.

thewild said:
Some people seem to have fixed this issue by flashing the official Cyanogenmod Recovery.
Click to expand...
Click to collapse
After flashig the CM Recovery via TWRP, i can't use the recovery anymore. If i boot into CM-Recovery the display shows "Ereasing" and start the system. After that i got a bootloop.
Is it possible to use fastboot??

You guys should also check CM14.1 thread because people there are talking about the same problem. The latest post says the only solution was to flash an official kdz with LGUP.

thewild said:
You guys should also check CM14.1 thread because people there are talking about the same problem. The latest post says the only solution was to flash an official kdz with LGUP.
Click to expand...
Click to collapse
Did that. Worked once. Then i tried to flash cm again and had the same problems, so i wanted to flash stock again... now lgup crashes at 9% and the phones goes directly to download mode after turning it on.

onlyolli said:
Did that. Worked once. Then i tried to flash cm again and had the same problems, so i wanted to flash stock again... now lgup crashes at 9% and the phones goes directly to download mode after turning it on.
Click to expand...
Click to collapse
And the two times you tried to flash CM, that was with the same recovery ?
Can you go into fastboot mode ?

thewild said:
And the two times you tried to flash CM, that was with the same recovery ?
Can you go into fastboot mode ?
Click to expand...
Click to collapse
Yes, it was with cm recovery 20161130, if i remember correctly.
Sadly now, i can not go into fastboot. The phone goes directly into download mode. My windows vm detects the phone, and tries to flash a recent kdz, but lgup crashes at 9%. The phone still shows "0%".

Oh that's bad. What about another kdz ?

thewild said:
Oh that's bad. What about another kdz ?
Click to expand...
Click to collapse
Already tried like 3-4.... Its always the same. If the tool would at least give me a little bit more information, but it just stops.

I don't know then. Some users seem to have had the same problem (stuck at 9%) : http://forum.xda-developers.com/search/forum/4233?query=lgup 9%

I had the same issue, tried several things, my final solution was:
- Start in download mode (Volumen up and then plug in cable)
- use "LG Brigde" on Mac to install stock Rom ( Software update tab in APP ) guess should also work with Windows
- Boot original android
- enable usb debug
- Start bootloader via ADB
- fastboot flash recovery to twrp 3.0.2
- Boot in recovery via power and vol down (first factory reset from stock appears but after this twrp is starting)
- install cm nighty of 1 DEC via ADB sideload
- reboot and done
In the meantime i updated to twrp 3.0.2-1., installed gapps etc. everything is now working fine again.
Hope this is also working for you.

Which version of cm14 did u download and install? Can u please post the exact version?

Mmh ... LGUP is the Windows utility right ? How do I do if I only have a Linux machine ?

steadfasterX said:
When you say you try the recovery mode how do you try to get into it? Btw do you have twrp installed?
Click to expand...
Click to collapse
I'm trying to get to it via power+down, I get to the double "do you want to factory reset ?" question, but then :
- sometimes the CM recovery just says "erasing" for a few seconds and reboots to (non-working) CM
- sometimes it just plainly boots to (non-working) CM
I used to have TWRP installed but it didn't work with CM update, so I let CM install its own recovery.